Signing (almost) works.

3 files changed, 3725 insertions, 4 deletions

diff --git a/jsre/ethereum_js.go b/jsre/ethereum_js.go
index d236052e3..a61ffcbbf 100644
--- a/jsre/ethereum_js.go
+++ b/jsre/ethereum_js.go
@@ -1,5 +1,3693 @@
 package jsre
 
 const Ethereum_JS = `
-require=function t(e,r,n){function o(a,s){if(!r[a]){if(!e[a]){var u="function"==typeof require&&require;if(!s&&u)return u(a,!0);if(i)return i(a,!0);var c=new Error("Cannot find module '"+a+"'");throw c.code="MODULE_NOT_FOUND",c}var l=r[a]={exports:{}};e[a][0].call(l.exports,function(t){var r=e[a][1][t];return o(r?r:t)},l,l.exports,t,e,r,n)}return r[a].exports}for(var i="function"==typeof require&&require,a=0;a<n.length;a++)o(n[a]);return o}({1:[function(t,e,r){var n=t("../utils/utils"),o=t("./coder"),i=t("./utils"),a=function(t,e){var r=t.map(function(t){return t.type});return o.encodeParams(r,e)},s=function(t,e){var r=t.map(function(t){return t.type});return o.decodeParams(r,e)},u=function(t){var e={};return t.forEach(function(t){var r=n.extractDisplayName(t.name),o=n.extractTypeName(t.name),i=function(){var e=Array.prototype.slice.call(arguments);return a(t.inputs,e)};void 0===e[r]&&(e[r]=i),e[r][o]=i}),e},c=function(t){var e={};return t.forEach(function(t){var r=n.extractDisplayName(t.name),o=n.extractTypeName(t.name),i=function(e){return s(t.outputs,e)};void 0===e[r]&&(e[r]=i),e[r][o]=i}),e},l=function(t,e){var r=i.getConstructor(t,e.length);return r?a(r.inputs,e):(e.length>0&&console.warn("didn't found matching constructor, using default one"),"")};e.exports={inputParser:u,outputParser:c,formatInput:a,formatOutput:s,formatConstructorParams:l}},{"../utils/utils":8,"./coder":2,"./utils":5}],2:[function(t,e,r){var n=t("bignumber.js"),o=t("../utils/utils"),i=t("./formatters"),a=t("./param"),s=function(t){return"[]"===t.slice(-2)},u=function(t){this._name=t.name,this._match=t.match,this._mode=t.mode,this._inputFormatter=t.inputFormatter,this._outputFormatter=t.outputFormatter};u.prototype.isType=function(t){return"strict"===this._match?this._name===t||0===t.indexOf(this._name)&&"[]"===t.slice(this._name.length):"prefix"===this._match?0===t.indexOf(this._name):void 0},u.prototype.formatInput=function(t,e){if(o.isArray(t)&&e){var r=this;return t.map(function(t){return r._inputFormatter(t)}).reduce(function(t,e){return t.appendArrayElement(e),t},new a(i.formatInputInt(t.length).value))}return this._inputFormatter(t)},u.prototype.formatOutput=function(t,e){if(e){for(var r=[],o=new n(t.value,16),i=0;64*o>i;i+=64)r.push(this._outputFormatter(new a(t.suffix.slice(i,i+64))));return r}return this._outputFormatter(t)},u.prototype.isVariadicType=function(t){return s(t)||"bytes"===this._mode},u.prototype.shiftParam=function(t,e){if("bytes"===this._mode)return e.shiftBytes();if(s(t)){var r=new n(e.value.slice(0,64),16);return e.shiftArray(r)}return e.shiftValue()};var c=function(t){this._types=t};c.prototype._requireType=function(t){var e=this._types.filter(function(e){return e.isType(t)})[0];if(!e)throw Error("invalid solidity type!: "+t);return e},c.prototype._bytesToParam=function(t,e){var r=e.slice(0,64*t.length),n=e.slice(64*t.length);return new a(r,n)},c.prototype._formatInput=function(t,e){return this._requireType(t).formatInput(e,s(t))},c.prototype.encodeParam=function(t,e){return this._formatInput(t,e).encode()},c.prototype.encodeParams=function(t,e){var r=this;return t.map(function(t,n){return r._formatInput(t,e[n])}).reduce(function(t,e){return t.append(e),t},new a).encode()},c.prototype._formatOutput=function(t,e){return this._requireType(t).formatOutput(e,s(t))},c.prototype.decodeParam=function(t,e){return this._formatOutput(t,this._bytesToParam([t],e))},c.prototype.decodeParams=function(t,e){var r=this,n=this._bytesToParam(t,e);return t.map(function(t){var e=r._requireType(t),o=e.shiftParam(t,n);return e.formatOutput(o,s(t))})};var l=new c([new u({name:"address",match:"strict",mode:"value",inputFormatter:i.formatInputInt,outputFormatter:i.formatOutputAddress}),new u({name:"bool",match:"strict",mode:"value",inputFormatter:i.formatInputBool,outputFormatter:i.formatOutputBool}),new u({name:"int",match:"prefix",mode:"value",inputFormatter:i.formatInputInt,outputFormatter:i.formatOutputInt}),new u({name:"uint",match:"prefix",mode:"value",inputFormatter:i.formatInputInt,outputFormatter:i.formatOutputUInt}),new u({name:"bytes",match:"strict",mode:"bytes",inputFormatter:i.formatInputDynamicBytes,outputFormatter:i.formatOutputDynamicBytes}),new u({name:"bytes",match:"prefix",mode:"value",inputFormatter:i.formatInputBytes,outputFormatter:i.formatOutputBytes}),new u({name:"real",match:"prefix",mode:"value",inputFormatter:i.formatInputReal,outputFormatter:i.formatOutputReal}),new u({name:"ureal",match:"prefix",mode:"value",inputFormatter:i.formatInputReal,outputFormatter:i.formatOutputUReal})]);e.exports=l},{"../utils/utils":8,"./formatters":3,"./param":4,"bignumber.js":"bignumber.js"}],3:[function(t,e,r){var n=t("bignumber.js"),o=t("../utils/utils"),i=t("../utils/config"),a=t("./param"),s=function(t){var e=2*i.ETH_PADDING;n.config(i.ETH_BIGNUMBER_ROUNDING_MODE);var r=o.padLeft(o.toTwosComplement(t).round().toString(16),e);return new a(r)},u=function(t){var e=o.fromAscii(t,i.ETH_PADDING).substr(2);return new a(e)},c=function(t){var e=o.fromAscii(t,i.ETH_PADDING).substr(2);return new a(s(t.length).value,e)},l=function(t){var e="000000000000000000000000000000000000000000000000000000000000000"+(t?"1":"0");return new a(e)},p=function(t){return s(new n(t).times(new n(2).pow(128)))},f=function(t){return"1"===new n(t.substr(0,1),16).toString(2).substr(0,1)},m=function(t){var e=t.value||"0";return f(e)?new n(e,16).minus(new n("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",16)).minus(1):new n(e,16)},h=function(t){var e=t.value||"0";return new n(e,16)},d=function(t){return m(t).dividedBy(new n(2).pow(128))},y=function(t){return h(t).dividedBy(new n(2).pow(128))},g=function(t){return"0000000000000000000000000000000000000000000000000000000000000001"===t.value?!0:!1},v=function(t){return o.toAscii(t.value)},b=function(t){return o.toAscii(t.suffix)},w=function(t){var e=t.value;return"0x"+e.slice(e.length-40,e.length)};e.exports={formatInputInt:s,formatInputBytes:u,formatInputDynamicBytes:c,formatInputBool:l,formatInputReal:p,formatOutputInt:m,formatOutputUInt:h,formatOutputReal:d,formatOutputUReal:y,formatOutputBool:g,formatOutputBytes:v,formatOutputDynamicBytes:b,formatOutputAddress:w}},{"../utils/config":7,"../utils/utils":8,"./param":4,"bignumber.js":"bignumber.js"}],4:[function(t,e,r){var n=function(t,e){this.value=t||"",this.suffix=e||""};n.prototype.append=function(t){this.value+=t.value,this.suffix+=t.suffix},n.prototype.appendArrayElement=function(t){this.suffix+=t.value},n.prototype.encode=function(){return this.value+this.suffix},n.prototype.shiftValue=function(){var t=this.value.slice(0,64);return this.value=this.value.slice(64),new n(t)},n.prototype.shiftBytes=function(){return this.shiftArray(1)},n.prototype.shiftArray=function(t){var e=this.value.slice(0,64);this.value=this.value.slice(64);var r=this.suffix.slice(0,64*t);return this.suffix=this.suffix.slice(64*t),new n(e,r)},e.exports=n},{}],5:[function(t,e,r){var n=function(t,e){return t.filter(function(t){return"constructor"===t.type&&t.inputs.length===e})[0]};e.exports={getConstructor:n}},{}],6:[function(t,e,r){"use strict";r.XMLHttpRequest="undefined"==typeof XMLHttpRequest?{}:XMLHttpRequest},{}],7:[function(t,e,r){var n=t("bignumber.js"),o=["wei","Kwei","Mwei","Gwei","szabo","finney","ether","grand","Mether","Gether","Tether","Pether","Eether","Zether","Yether","Nether","Dether","Vether","Uether"];e.exports={ETH_PADDING:32,ETH_SIGNATURE_LENGTH:4,ETH_UNITS:o,ETH_BIGNUMBER_ROUNDING_MODE:{ROUNDING_MODE:n.ROUND_DOWN},ETH_POLLING_TIMEOUT:1e3,defaultBlock:"latest",defaultAccount:void 0}},{"bignumber.js":"bignumber.js"}],8:[function(t,e,r){var n=t("bignumber.js"),o={wei:"1",kwei:"1000",ada:"1000",mwei:"1000000",babbage:"1000000",gwei:"1000000000",shannon:"1000000000",szabo:"1000000000000",finney:"1000000000000000",ether:"1000000000000000000",kether:"1000000000000000000000",grand:"1000000000000000000000",einstein:"1000000000000000000000",mether:"1000000000000000000000000",gether:"1000000000000000000000000000",tether:"1000000000000000000000000000000"},i=function(t,e,r){return new Array(e-t.length+1).join(r?r:"0")+t},a=function(t){var e="",r=0,n=t.length;for("0x"===t.substring(0,2)&&(r=2);n>r;r+=2){var o=parseInt(t.substr(r,2),16);if(0===o)break;e+=String.fromCharCode(o)}return e},s=function(t){for(var e="",r=0;r<t.length;r++){var n=t.charCodeAt(r).toString(16);e+=n.length<2?"0"+n:n}return e},u=function(t,e){e=void 0===e?0:e;for(var r=s(t);r.length<2*e;)r+="00";return"0x"+r},c=function(t){if(-1!==t.name.indexOf("("))return t.name;var e=t.inputs.map(function(t){return t.type}).join();return t.name+"("+e+")"},l=function(t){var e=t.indexOf("(");return-1!==e?t.substr(0,e):t},p=function(t){var e=t.indexOf("(");return-1!==e?t.substr(e+1,t.length-1-(e+1)).replace(" ",""):""},f=function(t){return v(t).toNumber()},m=function(t){var e=v(t),r=e.toString(16);return e.lessThan(0)?"-0x"+r.substr(1):"0x"+r},h=function(t){if(T(t))return m(+t);if(F(t))return m(t);if(B(t))return u(JSON.stringify(t));if(I(t)){if(0===t.indexOf("-0x"))return m(t);if(!isFinite(t))return u(t)}return m(t)},d=function(t){t=t?t.toLowerCase():"ether";var e=o[t];if(void 0===e)throw new Error("This unit doesn't exists, please use the one of the following units"+JSON.stringify(o,null,2));return new n(e,10)},y=function(t,e){var r=v(t).dividedBy(d(e));return F(t)?r:r.toString(10)},g=function(t,e){var r=v(t).times(d(e));return F(t)?r:r.toString(10)},v=function(t){return t=t||0,F(t)?t:!I(t)||0!==t.indexOf("0x")&&0!==t.indexOf("-0x")?new n(t.toString(10),10):new n(t.replace("0x",""),16)},b=function(t){var e=v(t);return e.lessThan(0)?new n("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",16).plus(e).plus(1):e},w=function(t){return/^0x[0-9a-f]{40}$/.test(t)},_=function(t){return/^(0x)?[0-9a-f]{40}$/.test(t)},x=function(t){return w(t)?t:/^[0-9a-f]{40}$/.test(t)?"0x"+t:"0x"+i(h(t).substr(2),40)},F=function(t){return t instanceof n||t&&t.constructor&&"BigNumber"===t.constructor.name},I=function(t){return"string"==typeof t||t&&t.constructor&&"String"===t.constructor.name},N=function(t){return"function"==typeof t},B=function(t){return"object"==typeof t},T=function(t){return"boolean"==typeof t},O=function(t){return t instanceof Array},P=function(t){try{return!!JSON.parse(t)}catch(e){return!1}};e.exports={padLeft:i,toHex:h,toDecimal:f,fromDecimal:m,toAscii:a,fromAscii:u,transformToFullName:c,extractDisplayName:l,extractTypeName:p,toWei:g,fromWei:y,toBigNumber:v,toTwosComplement:b,toAddress:x,isBigNumber:F,isStrictAddress:w,isAddress:_,isFunction:N,isString:I,isObject:B,isBoolean:T,isArray:O,isJson:P}},{"bignumber.js":"bignumber.js"}],9:[function(t,e,r){e.exports={version:"0.3.5"}},{}],10:[function(t,e,r){var n=t("./version.json"),o=t("./web3/net"),i=t("./web3/eth"),a=t("./web3/db"),s=t("./web3/shh"),u=t("./web3/watches"),c=t("./web3/filter"),l=t("./utils/utils"),p=t("./web3/formatters"),f=t("./web3/requestmanager"),m=t("./utils/config"),h=t("./web3/method"),d=t("./web3/property"),y=[new h({name:"sha3",call:"web3_sha3",params:1})],g=[new d({name:"version.client",getter:"web3_clientVersion"}),new d({name:"version.network",getter:"net_version",inputFormatter:l.toDecimal}),new d({name:"version.ethereum",getter:"eth_protocolVersion",inputFormatter:l.toDecimal}),new d({name:"version.whisper",getter:"shh_version",inputFormatter:l.toDecimal})],v=function(t,e){e.forEach(function(e){e.attachToObject(t)})},b=function(t,e){e.forEach(function(e){e.attachToObject(t)})},w={};w.providers={},w.version={},w.version.api=n.version,w.eth={},w.eth.filter=function(t,e,r,n){return t._isEvent?t(e,r):new c(t,u.eth(),n||p.outputLogFormatter)},w.shh={},w.shh.filter=function(t){return new c(t,u.shh(),p.outputPostFormatter)},w.net={},w.db={},w.setProvider=function(t){f.getInstance().setProvider(t)},w.reset=function(){f.getInstance().reset(),m.defaultBlock="latest",m.defaultAccount=void 0},w.toHex=l.toHex,w.toAscii=l.toAscii,w.fromAscii=l.fromAscii,w.toDecimal=l.toDecimal,w.fromDecimal=l.fromDecimal,w.toBigNumber=l.toBigNumber,w.toWei=l.toWei,w.fromWei=l.fromWei,w.isAddress=l.isAddress,Object.defineProperty(w.eth,"defaultBlock",{get:function(){return m.defaultBlock},set:function(t){return m.defaultBlock=t,t}}),Object.defineProperty(w.eth,"defaultAccount",{get:function(){return m.defaultAccount},set:function(t){return m.defaultAccount=t,t}}),v(w,y),b(w,g),v(w.net,o.methods),b(w.net,o.properties),v(w.eth,i.methods),b(w.eth,i.properties),v(w.db,a.methods),v(w.shh,s.methods),e.exports=w},{"./utils/config":7,"./utils/utils":8,"./version.json":9,"./web3/db":12,"./web3/eth":14,"./web3/filter":16,"./web3/formatters":17,"./web3/method":21,"./web3/net":22,"./web3/property":23,"./web3/requestmanager":25,"./web3/shh":26,"./web3/watches":27}],11:[function(t,e,r){var n=t("../web3"),o=t("../solidity/abi"),i=t("../utils/utils"),a=t("./event"),s=t("./function"),u=function(t,e){e.filter(function(t){return"function"===t.type}).map(function(e){return new s(e,t.address)}).forEach(function(e){e.attachToContract(t)})},c=function(t,e){e.filter(function(t){return"event"===t.type}).map(function(e){return new a(e,t.address)}).forEach(function(e){e.attachToContract(t)})},l=function(t){return p.bind(null,t)},p=function(t,e){if(this.address="",i.isAddress(e))this.address=e;else{e=e||{};var r=Array.prototype.slice.call(arguments,2),a=o.formatConstructorParams(t,r);e.data+=a,this.address=n.eth.sendTransaction(e)}u(this,t),c(this,t)};p.prototype.call=function(){return console.error("contract.call is deprecated"),this},p.prototype.sendTransaction=function(){return console.error("contract.sendTransact is deprecated"),this},e.exports=l},{"../solidity/abi":1,"../utils/utils":8,"../web3":10,"./event":15,"./function":18}],12:[function(t,e,r){var n=t("./method"),o=new n({name:"putString",call:"db_putString",params:3}),i=new n({name:"getString",call:"db_getString",params:2}),a=new n({name:"putHex",call:"db_putHex",params:3}),s=new n({name:"getHex",call:"db_getHex",params:2}),u=[o,i,a,s];e.exports={methods:u}},{"./method":21}],13:[function(t,e,r){e.exports={InvalidNumberOfParams:function(){return new Error("Invalid number of input parameters")},InvalidConnection:function(t){return new Error("CONNECTION ERROR: Couldn't connect to node "+t+", is it running?")},InvalidProvider:function(){return new Error("Providor not set or invalid")},InvalidResponse:function(t){var e=t&&t.error&&t.error.message?t.error.message:"Invalid JSON RPC response";return new Error(e)}}},{}],14:[function(t,e,r){"use strict";var n=t("./formatters"),o=t("../utils/utils"),i=t("./method"),a=t("./property"),s=function(t){return o.isString(t[0])&&0===t[0].indexOf("0x")?"eth_getBlockByHash":"eth_getBlockByNumber"},u=function(t){return o.isString(t[0])&&0===t[0].indexOf("0x")?"eth_getTransactionByBlockHashAndIndex":"eth_getTransactionByBlockNumberAndIndex"},c=function(t){return o.isString(t[0])&&0===t[0].indexOf("0x")?"eth_getUncleByBlockHashAndIndex":"eth_getUncleByBlockNumberAndIndex"},l=function(t){return o.isString(t[0])&&0===t[0].indexOf("0x")?"eth_getBlockTransactionCountByHash":"eth_getBlockTransactionCountByNumber"},p=function(t){return o.isString(t[0])&&0===t[0].indexOf("0x")?"eth_getUncleCountByBlockHash":"eth_getUncleCountByBlockNumber"},f=new i({name:"getBalance",call:"eth_getBalance",params:2,inputFormatter:[o.toAddress,n.inputDefaultBlockNumberFormatter],outputFormatter:n.outputBigNumberFormatter}),m=new i({name:"getStorageAt",call:"eth_getStorageAt",params:3,inputFormatter:[null,o.toHex,n.inputDefaultBlockNumberFormatter]}),h=new i({name:"getCode",call:"eth_getCode",params:2,inputFormatter:[o.toAddress,n.inputDefaultBlockNumberFormatter]}),d=new i({name:"getBlock",call:s,params:2,inputFormatter:[n.inputBlockNumberFormatter,function(t){return!!t}],outputFormatter:n.outputBlockFormatter}),y=new i({name:"getUncle",call:c,params:2,inputFormatter:[n.inputBlockNumberFormatter,o.toHex],outputFormatter:n.outputBlockFormatter}),g=new i({name:"getCompilers",call:"eth_getCompilers",params:0}),v=new i({name:"getBlockTransactionCount",call:l,params:1,inputFormatter:[n.inputBlockNumberFormatter],outputFormatter:o.toDecimal}),b=new i({name:"getBlockUncleCount",call:p,params:1,inputFormatter:[n.inputBlockNumberFormatter],outputFormatter:o.toDecimal}),w=new i({name:"getTransaction",call:"eth_getTransactionByHash",params:1,outputFormatter:n.outputTransactionFormatter}),_=new i({name:"getTransactionFromBlock",call:u,params:2,inputFormatter:[n.inputBlockNumberFormatter,o.toHex],outputFormatter:n.outputTransactionFormatter}),x=new i({name:"getTransactionCount",call:"eth_getTransactionCount",params:2,inputFormatter:[null,n.inputDefaultBlockNumberFormatter],outputFormatter:o.toDecimal}),F=new i({name:"sendTransaction",call:"eth_sendTransaction",params:1,inputFormatter:[n.inputTransactionFormatter]}),I=new i({name:"call",call:"eth_call",params:2,inputFormatter:[n.inputTransactionFormatter,n.inputDefaultBlockNumberFormatter]}),N=new i({name:"compile.solidity",call:"eth_compileSolidity",params:1}),B=new i({name:"compile.lll",call:"eth_compileLLL",params:1}),T=new i({name:"compile.serpent",call:"eth_compileSerpent",params:1}),O=[f,m,h,d,y,g,v,b,w,_,x,I,F,N,B,T],P=[new a({name:"coinbase",getter:"eth_coinbase"}),new a({name:"mining",getter:"eth_mining"}),new a({name:"hashrate",getter:"eth_hashrate",outputFormatter:o.toDecimal}),new a({name:"gasPrice",getter:"eth_gasPrice",outputFormatter:n.outputBigNumberFormatter}),new a({name:"accounts",getter:"eth_accounts"}),new a({name:"blockNumber",getter:"eth_blockNumber",outputFormatter:o.toDecimal})];e.exports={methods:O,properties:P}},{"../utils/utils":8,"./formatters":17,"./method":21,"./property":23}],15:[function(t,e,r){var n=t("../utils/utils"),o=t("../solidity/coder"),i=t("../web3"),a=t("./formatters"),s=function(t,e){this._params=t.inputs,this._name=n.transformToFullName(t),this._address=e,this._anonymous=t.anonymous};s.prototype.types=function(t){return this._params.filter(function(e){return e.indexed===t}).map(function(t){return t.type})},s.prototype.displayName=function(){return n.extractDisplayName(this._name)},s.prototype.typeName=function(){return n.extractTypeName(this._name)},s.prototype.signature=function(){return i.sha3(i.fromAscii(this._name)).slice(2)},s.prototype.encode=function(t,e){t=t||{},e=e||{};var r={};["fromBlock","toBlock"].filter(function(t){return void 0!==e[t]}).forEach(function(t){r[t]=a.inputBlockNumberFormatter(e[t])}),r.topics=[],this._anonymous||(r.address=this._address,r.topics.push("0x"+this.signature()));var i=this._params.filter(function(t){return t.indexed===!0}).map(function(e){var r=t[e.name];return void 0===r||null===r?null:n.isArray(r)?r.map(function(t){return"0x"+o.encodeParam(e.type,t)}):"0x"+o.encodeParam(e.type,r)});return r.topics=r.topics.concat(i),r},s.prototype.decode=function(t){t.data=t.data||"",t.topics=t.topics||[];var e=this._anonymous?t.topics:t.topics.slice(1),r=e.map(function(t){return t.slice(2)}).join(""),n=o.decodeParams(this.types(!0),r),i=t.data.slice(2),s=o.decodeParams(this.types(!1),i),u=a.outputLogFormatter(t);return u.event=this.displayName(),u.address=t.address,u.args=this._params.reduce(function(t,e){return t[e.name]=e.indexed?n.shift():s.shift(),t},{}),delete u.data,delete u.topics,u},s.prototype.execute=function(t,e){var r=this.encode(t,e),n=this.decode.bind(this);return i.eth.filter(r,void 0,void 0,n)},s.prototype.attachToContract=function(t){var e=this.execute.bind(this),r=this.displayName();t[r]||(t[r]=e),t[r][this.typeName()]=this.execute.bind(this,t)},e.exports=s},{"../solidity/coder":2,"../utils/utils":8,"../web3":10,"./formatters":17}],16:[function(t,e,r){var n=t("./requestmanager"),o=t("./formatters"),i=t("../utils/utils"),a=function(t){return null===t||"undefined"==typeof t?null:(t=String(t),0===t.indexOf("0x")?t:i.fromAscii(t))},s=function(t){return i.isString(t)?t:(t=t||{},t.topics=t.topics||[],t.topics=t.topics.map(function(t){return i.isArray(t)?t.map(a):a(t)}),{topics:t.topics,to:t.to,address:t.address,fromBlock:o.inputBlockNumberFormatter(t.fromBlock),toBlock:o.inputBlockNumberFormatter(t.toBlock)})},u=function(t,e,r){var n={};e.forEach(function(t){t.attachToObject(n)}),this.options=s(t),this.implementation=n,this.callbacks=[],this.formatter=r,this.filterId=this.implementation.newFilter(this.options)};u.prototype.watch=function(t){this.callbacks.push(t);var e=this,r=function(t,r){return t?e.callbacks.forEach(function(e){e(t)}):void r.forEach(function(t){t=e.formatter?e.formatter(t):t,e.callbacks.forEach(function(e){e(null,t)})})};i.isString(this.options)||this.get(function(e,r){e&&t(e),r.forEach(function(e){t(null,e)})}),n.getInstance().startPolling({method:this.implementation.poll.call,params:[this.filterId]},this.filterId,r,this.stopWatching.bind(this))},u.prototype.stopWatching=function(){n.getInstance().stopPolling(this.filterId),this.implementation.uninstallFilter(this.filterId),this.callbacks=[]},u.prototype.get=function(t){var e=this;if(!i.isFunction(t)){var r=this.implementation.getLogs(this.filterId);return r.map(function(t){return e.formatter?e.formatter(t):t})}this.implementation.getLogs(this.filterId,function(r,n){r?t(r):t(null,n.map(function(t){return e.formatter?e.formatter(t):t}))})},e.exports=u},{"../utils/utils":8,"./formatters":17,"./requestmanager":25}],17:[function(t,e,r){var n=t("../utils/utils"),o=t("../utils/config"),i=function(t){return n.toBigNumber(t)},a=function(t){return"latest"===t||"pending"===t||"earliest"===t},s=function(t){return void 0===t?o.defaultBlock:u(t)},u=function(t){return void 0===t?void 0:a(t)?t:n.toHex(t)},c=function(t){return t.from=t.from||o.defaultAccount,t.code&&(t.data=t.code,delete t.code),["gasPrice","gas","value"].filter(function(e){return void 0!==t[e]}).forEach(function(e){t[e]=n.fromDecimal(t[e])}),t},l=function(t){return t.blockNumber=n.toDecimal(t.blockNumber),t.transactionIndex=n.toDecimal(t.transactionIndex),t.nonce=n.toDecimal(t.nonce),t.gas=n.toDecimal(t.gas),t.gasPrice=n.toBigNumber(t.gasPrice),t.value=n.toBigNumber(t.value),t},p=function(t){return t.gasLimit=n.toDecimal(t.gasLimit),t.gasUsed=n.toDecimal(t.gasUsed),t.size=n.toDecimal(t.size),t.timestamp=n.toDecimal(t.timestamp),t.number=n.toDecimal(t.number),t.difficulty=n.toBigNumber(t.difficulty),t.totalDifficulty=n.toBigNumber(t.totalDifficulty),n.isArray(t.transactions)&&t.transactions.forEach(function(t){return n.isString(t)?void 0:l(t)}),t},f=function(t){return null===t?null:(t.blockNumber=n.toDecimal(t.blockNumber),t.transactionIndex=n.toDecimal(t.transactionIndex),t.logIndex=n.toDecimal(t.logIndex),t)},m=function(t){return t.payload=n.toHex(t.payload),t.ttl=n.fromDecimal(t.ttl),t.workToProve=n.fromDecimal(t.workToProve),t.priority=n.fromDecimal(t.priority),n.isArray(t.topics)||(t.topics=t.topics?[t.topics]:[]),t.topics=t.topics.map(function(t){return n.fromAscii(t)}),t},h=function(t){return t.expiry=n.toDecimal(t.expiry),t.sent=n.toDecimal(t.sent),t.ttl=n.toDecimal(t.ttl),t.workProved=n.toDecimal(t.workProved),t.payloadRaw=t.payload,t.payload=n.toAscii(t.payload),n.isJson(t.payload)&&(t.payload=JSON.parse(t.payload)),t.topics||(t.topics=[]),t.topics=t.topics.map(function(t){return n.toAscii(t)}),t};e.exports={inputDefaultBlockNumberFormatter:s,inputBlockNumberFormatter:u,inputTransactionFormatter:c,inputPostFormatter:m,outputBigNumberFormatter:i,outputTransactionFormatter:l,outputBlockFormatter:p,outputLogFormatter:f,outputPostFormatter:h}},{"../utils/config":7,"../utils/utils":8}],18:[function(t,e,r){var n=t("../web3"),o=t("../solidity/coder"),i=t("../utils/utils"),a=function(t,e){this._inputTypes=t.inputs.map(function(t){return t.type}),this._outputTypes=t.outputs.map(function(t){return t.type}),this._constant=t.constant,this._name=i.transformToFullName(t),this._address=e};a.prototype.toPayload=function(){var t=Array.prototype.slice.call(arguments),e={};return t.length>this._inputTypes.length&&i.isObject(t[t.length-1])&&(e=t.pop()),e.to=this._address,e.data="0x"+this.signature()+o.encodeParams(this._inputTypes,t),e},a.prototype.signature=function(){return n.sha3(n.fromAscii(this._name)).slice(2,10)},a.prototype.call=function(){var t=this.toPayload.apply(this,Array.prototype.slice.call(arguments)),e=n.eth.call(t);e=e.length>=2?e.slice(2):e;var r=o.decodeParams(this._outputTypes,e);return 1===r.length?r[0]:r},a.prototype.sendTransaction=function(){var t=this.toPayload.apply(this,Array.prototype.slice.call(arguments));n.eth.sendTransaction(t)},a.prototype.displayName=function(){return i.extractDisplayName(this._name)},a.prototype.typeName=function(){return i.extractTypeName(this._name)},a.prototype.execute=function(){var t=!this._constant;return t?this.sendTransaction.apply(this,Array.prototype.slice.call(arguments)):this.call.apply(this,Array.prototype.slice.call(arguments))},a.prototype.attachToContract=function(t){var e=this.execute.bind(this);e.call=this.call.bind(this),e.sendTransaction=this.sendTransaction.bind(this);var r=this.displayName();t[r]||(t[r]=e),t[r][this.typeName()]=e},e.exports=a},{"../solidity/coder":2,"../utils/utils":8,"../web3":10}],19:[function(t,e,r){"use strict";var n=t("xmlhttprequest").XMLHttpRequest,o=t("./errors"),i=function(t){this.host=t||"http://localhost:8545"};i.prototype.send=function(t){var e=new n;e.open("POST",this.host,!1);try{e.send(JSON.stringify(t))}catch(r){throw o.InvalidConnection(this.host)}return JSON.parse(e.responseText)},i.prototype.sendAsync=function(t,e){var r=new n;r.onreadystatechange=function(){4===r.readyState&&e(null,JSON.parse(r.responseText))},r.open("POST",this.host,!0);try{r.send(JSON.stringify(t))}catch(i){e(o.InvalidConnection(this.host))}},e.exports=i},{"./errors":13,xmlhttprequest:6}],20:[function(t,e,r){var n=function(){return arguments.callee._singletonInstance?arguments.callee._singletonInstance:(arguments.callee._singletonInstance=this,void(this.messageId=1))};n.getInstance=function(){var t=new n;return t},n.prototype.toPayload=function(t,e){return t||console.error("jsonrpc method should be specified!"),{jsonrpc:"2.0",method:t,params:e||[],id:this.messageId++}},n.prototype.isValidResponse=function(t){return!!t&&!t.error&&"2.0"===t.jsonrpc&&"number"==typeof t.id&&void 0!==t.result},n.prototype.toBatchPayload=function(t){var e=this;return t.map(function(t){return e.toPayload(t.method,t.params)})},e.exports=n},{}],21:[function(t,e,r){var n=t("./requestmanager"),o=t("../utils/utils"),i=t("./errors"),a=function(t){this.name=t.name,this.call=t.call,this.params=t.params||0,this.inputFormatter=t.inputFormatter,this.outputFormatter=t.outputFormatter};a.prototype.getCall=function(t){return o.isFunction(this.call)?this.call(t):this.call},a.prototype.extractCallback=function(t){return o.isFunction(t[t.length-1])?t.pop():null},a.prototype.validateArgs=function(t){if(t.length!==this.params)throw i.InvalidNumberOfParams()},a.prototype.formatInput=function(t){return this.inputFormatter?this.inputFormatter.map(function(e,r){return e?e(t[r]):t[r]}):t},a.prototype.formatOutput=function(t){return this.outputFormatter&&null!==t?this.outputFormatter(t):t},a.prototype.attachToObject=function(t){var e=this.send.bind(this);e.call=this.call;var r=this.name.split(".");r.length>1?(t[r[0]]=t[r[0]]||{},t[r[0]][r[1]]=e):t[r[0]]=e},a.prototype.toPayload=function(t){var e=this.getCall(t),r=this.extractCallback(t),n=this.formatInput(t);return this.validateArgs(n),{method:e,params:n,callback:r}},a.prototype.send=function(){var t=this.toPayload(Array.prototype.slice.call(arguments));if(t.callback){var e=this;return n.getInstance().sendAsync(t,function(r,n){t.callback(null,e.formatOutput(n))})}return this.formatOutput(n.getInstance().send(t))},e.exports=a},{"../utils/utils":8,"./errors":13,"./requestmanager":25}],22:[function(t,e,r){var n=t("../utils/utils"),o=t("./property"),i=[],a=[new o({name:"listening",getter:"net_listening"}),new o({name:"peerCount",getter:"net_peerCount",outputFormatter:n.toDecimal})];e.exports={methods:i,properties:a}},{"../utils/utils":8,"./property":23}],23:[function(t,e,r){var n=t("./requestmanager"),o=function(t){this.name=t.name,this.getter=t.getter,this.setter=t.setter,this.outputFormatter=t.outputFormatter,this.inputFormatter=t.inputFormatter};o.prototype.formatInput=function(t){return this.inputFormatter?this.inputFormatter(t):t},o.prototype.formatOutput=function(t){return this.outputFormatter&&null!==t?this.outputFormatter(t):t},o.prototype.attachToObject=function(t){var e={get:this.get.bind(this),set:this.set.bind(this)},r=this.name.split(".");r.length>1?(t[r[0]]=t[r[0]]||{},Object.defineProperty(t[r[0]],r[1],e)):Object.defineProperty(t,r[0],e)},o.prototype.get=function(){return this.formatOutput(n.getInstance().send({method:this.getter}))},o.prototype.set=function(t){return n.getInstance().send({method:this.setter,params:[this.formatInput(t)]})},e.exports=o},{"./requestmanager":25}],24:[function(t,e,r){var n=function(){};n.prototype.send=function(t){var e=navigator.qt.callMethod(JSON.stringify(t));return JSON.parse(e)},e.exports=n},{}],25:[function(t,e,r){var n=t("./jsonrpc"),o=t("../utils/utils"),i=t("../utils/config"),a=t("./errors"),s=function(t){return arguments.callee._singletonInstance?arguments.callee._singletonInstance:(arguments.callee._singletonInstance=this,this.provider=t,this.polls=[],this.timeout=null,void this.poll())};s.getInstance=function(){var t=new s;return t},s.prototype.send=function(t){if(!this.provider)return console.error(a.InvalidProvider()),null;var e=n.getInstance().toPayload(t.method,t.params),r=this.provider.send(e);if(!n.getInstance().isValidResponse(r))throw a.InvalidResponse(r);return r.result},s.prototype.sendAsync=function(t,e){if(!this.provider)return e(a.InvalidProvider());var r=n.getInstance().toPayload(t.method,t.params);this.provider.sendAsync(r,function(t,r){return t?e(t):n.getInstance().isValidResponse(r)?void e(null,r.result):e(a.InvalidResponse(r))})},s.prototype.setProvider=function(t){this.provider=t},s.prototype.startPolling=function(t,e,r,n){this.polls.push({data:t,id:e,callback:r,uninstall:n})},s.prototype.stopPolling=function(t){for(var e=this.polls.length;e--;){var r=this.polls[e];r.id===t&&this.polls.splice(e,1)}},s.prototype.reset=function(){this.polls.forEach(function(t){t.uninstall(t.id)}),this.polls=[],this.timeout&&(clearTimeout(this.timeout),this.timeout=null),this.poll()},s.prototype.poll=function(){if(this.timeout=setTimeout(this.poll.bind(this),i.ETH_POLLING_TIMEOUT),this.polls.length){if(!this.provider)return void console.error(a.InvalidProvider());var t=n.getInstance().toBatchPayload(this.polls.map(function(t){return t.data})),e=this;this.provider.sendAsync(t,function(t,r){if(!t){if(!o.isArray(r))throw a.InvalidResponse(r);r.map(function(t,r){return t.callback=e.polls[r].callback,t}).filter(function(t){var e=n.getInstance().isValidResponse(t);return e||t.callback(a.InvalidResponse(t)),e}).filter(function(t){return o.isArray(t.result)&&t.result.length>0}).forEach(function(t){t.callback(null,t.result)})}})}},e.exports=s},{"../utils/config":7,"../utils/utils":8,"./errors":13,"./jsonrpc":20}],26:[function(t,e,r){var n=t("./method"),o=t("./formatters"),i=new n({name:"post",call:"shh_post",params:1,inputFormatter:[o.inputPostFormatter]}),a=new n({name:"newIdentity",call:"shh_newIdentity",params:0}),s=new n({name:"hasIdentity",call:"shh_hasIdentity",params:1}),u=new n({name:"newGroup",call:"shh_newGroup",params:0}),c=new n({name:"addToGroup",call:"shh_addToGroup",params:0}),l=[i,a,s,u,c];e.exports={methods:l}},{"./formatters":17,"./method":21}],27:[function(t,e,r){var n=t("./method"),o=function(){var t=function(t){return"string"==typeof t[0]?"eth_newBlockFilter":"eth_newFilter"},e=new n({name:"newFilter",call:t,params:1}),r=new n({name:"uninstallFilter",call:"eth_uninstallFilter",params:1}),o=new n({name:"getLogs",call:"eth_getFilterLogs",params:1}),i=new n({name:"poll",call:"eth_getFilterChanges",params:1});return[e,r,o,i]},i=function(){var t=new n({name:"newFilter",call:"shh_newFilter",params:1}),e=new n({name:"uninstallFilter",
-call:"shh_uninstallFilter",params:1}),r=new n({name:"getLogs",call:"shh_getMessages",params:1}),o=new n({name:"poll",call:"shh_getFilterChanges",params:1});return[t,e,r,o]};e.exports={eth:o,shh:i}},{"./method":21}],28:[function(t,e,r){},{}],"bignumber.js":[function(t,e,r){"use strict";e.exports=BigNumber},{}],web3:[function(t,e,r){var n=t("./lib/web3");n.providers.HttpProvider=t("./lib/web3/httpprovider"),n.providers.QtSyncProvider=t("./lib/web3/qtsync"),n.eth.contract=t("./lib/web3/contract"),n.abi=t("./lib/solidity/abi"),"undefined"!=typeof window&&"undefined"==typeof window.web3&&(window.web3=n),e.exports=n},{"./lib/solidity/abi":1,"./lib/web3":10,"./lib/web3/contract":11,"./lib/web3/httpprovider":19,"./lib/web3/qtsync":24}]},{},["web3"]);`
+require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file abi.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @author Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+var utils = require('../utils/utils');
+var coder = require('./coder');
+var solUtils = require('./utils');
+
+/**
+ * Formats input params to bytes
+ *
+ * @method formatInput
+ * @param {Array} abi inputs of method
+ * @param {Array} params that will be formatted to bytes
+ * @returns bytes representation of input params
+ */
+var formatInput = function (inputs, params) {
+    var i = inputs.map(function (input) {
+        return input.type;
+    });
+    return coder.encodeParams(i, params);
+};
+
+/** 
+ * Formats output bytes back to param list
+ *
+ * @method formatOutput
+ * @param {Array} abi outputs of method
+ * @param {String} bytes represention of output
+ * @returns {Array} output params
+ */
+var formatOutput = function (outs, bytes) {
+    var o = outs.map(function (out) {
+        return out.type;
+    });
+    
+    return coder.decodeParams(o, bytes); 
+};
+
+/**
+ * Should be called to create input parser for contract with given abi
+ *
+ * @method inputParser
+ * @param {Array} contract abi
+ * @returns {Object} input parser object for given json abi
+ * TODO: refactor creating the parser, do not double logic from contract
+ */
+var inputParser = function (json) {
+    var parser = {};
+    json.forEach(function (method) {
+        var displayName = utils.extractDisplayName(method.name);
+        var typeName = utils.extractTypeName(method.name);
+
+        var impl = function () {
+            var params = Array.prototype.slice.call(arguments);
+            return formatInput(method.inputs, params);
+        };
+
+        if (parser[displayName] === undefined) {
+            parser[displayName] = impl;
+        }
+
+        parser[displayName][typeName] = impl;
+    });
+
+    return parser;
+};
+
+/**
+ * Should be called to create output parser for contract with given abi
+ *
+ * @method outputParser
+ * @param {Array} contract abi
+ * @returns {Object} output parser for given json abi
+ */
+var outputParser = function (json) {
+    var parser = {};
+    json.forEach(function (method) {
+
+        var displayName = utils.extractDisplayName(method.name);
+        var typeName = utils.extractTypeName(method.name);
+
+        var impl = function (output) {
+            return formatOutput(method.outputs, output);
+        };
+
+        if (parser[displayName] === undefined) {
+            parser[displayName] = impl;
+        }
+
+        parser[displayName][typeName] = impl;
+    });
+
+    return parser;
+};
+
+var formatConstructorParams = function (abi, params) {
+    var constructor = solUtils.getConstructor(abi, params.length);
+    if (!constructor) {
+        if (params.length > 0) {
+            console.warn("didn't found matching constructor, using default one");
+        }
+        return '';
+    }
+    return formatInput(constructor.inputs, params);
+};
+
+module.exports = {
+    inputParser: inputParser,
+    outputParser: outputParser,
+    formatInput: formatInput,
+    formatOutput: formatOutput,
+    formatConstructorParams: formatConstructorParams
+};
+
+},{"../utils/utils":8,"./coder":2,"./utils":5}],2:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file coder.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var BigNumber = require('bignumber.js');
+var utils = require('../utils/utils');
+var f = require('./formatters');
+var SolidityParam = require('./param');
+
+/**
+ * Should be used to check if a type is an array type
+ *
+ * @method isArrayType
+ * @param {String} type
+ * @return {Bool} true is the type is an array, otherwise false
+ */
+var isArrayType = function (type) {
+    return type.slice(-2) === '[]';
+};
+
+/**
+ * SolidityType prototype is used to encode/decode solidity params of certain type
+ */
+var SolidityType = function (config) {
+    this._name = config.name;
+    this._match = config.match;
+    this._mode = config.mode;
+    this._inputFormatter = config.inputFormatter;
+    this._outputFormatter = config.outputFormatter;
+};
+
+/**
+ * Should be used to determine if this SolidityType do match given type
+ *
+ * @method isType
+ * @param {String} name
+ * @return {Bool} true if type match this SolidityType, otherwise false
+ */
+SolidityType.prototype.isType = function (name) {
+    if (this._match === 'strict') {
+        return this._name === name || (name.indexOf(this._name) === 0 && name.slice(this._name.length) === '[]');
+    } else if (this._match === 'prefix') {
+        // TODO better type detection!
+        return name.indexOf(this._name) === 0;
+    }
+};
+
+/**
+ * Should be used to transform plain param to SolidityParam object
+ *
+ * @method formatInput
+ * @param {Object} param - plain object, or an array of objects
+ * @param {Bool} arrayType - true if a param should be encoded as an array
+ * @return {SolidityParam} encoded param wrapped in SolidityParam object 
+ */
+SolidityType.prototype.formatInput = function (param, arrayType) {
+    if (utils.isArray(param) && arrayType) { // TODO: should fail if this two are not the same
+        var self = this;
+        return param.map(function (p) {
+            return self._inputFormatter(p);
+        }).reduce(function (acc, current) {
+            acc.appendArrayElement(current);
+            return acc;
+        }, new SolidityParam(f.formatInputInt(param.length).value));
+    } 
+    return this._inputFormatter(param);
+};
+
+/**
+ * Should be used to transoform SolidityParam to plain param
+ *
+ * @method formatOutput
+ * @param {SolidityParam} byteArray
+ * @param {Bool} arrayType - true if a param should be decoded as an array
+ * @return {Object} plain decoded param
+ */
+SolidityType.prototype.formatOutput = function (param, arrayType) {
+    if (arrayType) {
+        // let's assume, that we solidity will never return long arrays :P 
+        var result = [];
+        var length = new BigNumber(param.value, 16);
+        for (var i = 0; i < length * 64; i += 64) {
+            result.push(this._outputFormatter(new SolidityParam(param.suffix.slice(i, i + 64))));
+        }
+        return result;
+    }
+    return this._outputFormatter(param);
+};
+
+/**
+ * Should be used to check if a type is variadic
+ *
+ * @method isVariadicType
+ * @param {String} type
+ * @returns {Bool} true if the type is variadic
+ */
+SolidityType.prototype.isVariadicType = function (type) {
+    return isArrayType(type) || this._mode === 'bytes';
+};
+
+/**
+ * Should be used to shift param from params group
+ *
+ * @method shiftParam
+ * @param {String} type
+ * @returns {SolidityParam} shifted param
+ */
+SolidityType.prototype.shiftParam = function (type, param) {
+    if (this._mode === 'bytes') {
+        return param.shiftBytes();
+    } else if (isArrayType(type)) {
+        var length = new BigNumber(param.value.slice(0, 64), 16);
+        return param.shiftArray(length);
+    }
+    return param.shiftValue();
+};
+
+/**
+ * SolidityCoder prototype should be used to encode/decode solidity params of any type
+ */
+var SolidityCoder = function (types) {
+    this._types = types;
+};
+
+/**
+ * This method should be used to transform type to SolidityType
+ *
+ * @method _requireType
+ * @param {String} type
+ * @returns {SolidityType} 
+ * @throws {Error} throws if no matching type is found
+ */
+SolidityCoder.prototype._requireType = function (type) {
+    var solidityType = this._types.filter(function (t) {
+        return t.isType(type);
+    })[0];
+
+    if (!solidityType) {
+        throw Error('invalid solidity type!: ' + type);
+    }
+
+    return solidityType;
+};
+
+/**
+ * Should be used to transform plain bytes to SolidityParam object
+ *
+ * @method _bytesToParam
+ * @param {Array} types of params
+ * @param {String} bytes to be transformed to SolidityParam
+ * @return {SolidityParam} SolidityParam for this group of params
+ */
+SolidityCoder.prototype._bytesToParam = function (types, bytes) {
+    var value = bytes.slice(0, types.length * 64);
+    var suffix = bytes.slice(types.length * 64);
+    return new SolidityParam(value, suffix); 
+};
+
+/**
+ * Should be used to transform plain param of given type to SolidityParam
+ *
+ * @method _formatInput
+ * @param {String} type of param
+ * @param {Object} plain param
+ * @return {SolidityParam}
+ */
+SolidityCoder.prototype._formatInput = function (type, param) {
+    return this._requireType(type).formatInput(param, isArrayType(type));
+};
+
+/**
+ * Should be used to encode plain param
+ *
+ * @method encodeParam
+ * @param {String} type
+ * @param {Object} plain param
+ * @return {String} encoded plain param
+ */
+SolidityCoder.prototype.encodeParam = function (type, param) {
+    return this._formatInput(type, param).encode();
+};
+
+/**
+ * Should be used to encode list of params
+ *
+ * @method encodeParams
+ * @param {Array} types
+ * @param {Array} params
+ * @return {String} encoded list of params
+ */
+SolidityCoder.prototype.encodeParams = function (types, params) {
+    var self = this;
+    return types.map(function (type, index) {
+        return self._formatInput(type, params[index]);
+    }).reduce(function (acc, solidityParam) {
+        acc.append(solidityParam);
+        return acc;
+    }, new SolidityParam()).encode();
+};
+
+/**
+ * Should be used to transform SolidityParam to plain param
+ *
+ * @method _formatOutput
+ * @param {String} type
+ * @param {SolidityParam} param
+ * @return {Object} plain param
+ */
+SolidityCoder.prototype._formatOutput = function (type, param) {
+    return this._requireType(type).formatOutput(param, isArrayType(type));
+};
+
+/**
+ * Should be used to decode bytes to plain param
+ *
+ * @method decodeParam
+ * @param {String} type
+ * @param {String} bytes
+ * @return {Object} plain param
+ */
+SolidityCoder.prototype.decodeParam = function (type, bytes) {
+    return this._formatOutput(type, this._bytesToParam([type], bytes));
+};
+
+/**
+ * Should be used to decode list of params
+ *
+ * @method decodeParam
+ * @param {Array} types
+ * @param {String} bytes
+ * @return {Array} array of plain params
+ */
+SolidityCoder.prototype.decodeParams = function (types, bytes) {
+    var self = this;
+    var param = this._bytesToParam(types, bytes);
+    return types.map(function (type) {
+        var solidityType = self._requireType(type);
+        var p = solidityType.shiftParam(type, param);
+        return solidityType.formatOutput(p, isArrayType(type));
+    });
+};
+
+var coder = new SolidityCoder([
+    new SolidityType({
+        name: 'address',
+        match: 'strict',
+        mode: 'value',
+        inputFormatter: f.formatInputInt,
+        outputFormatter: f.formatOutputAddress
+    }),
+    new SolidityType({
+        name: 'bool',
+        match: 'strict',
+        mode: 'value',
+        inputFormatter: f.formatInputBool,
+        outputFormatter: f.formatOutputBool
+    }),
+    new SolidityType({
+        name: 'int',
+        match: 'prefix',
+        mode: 'value',
+        inputFormatter: f.formatInputInt,
+        outputFormatter: f.formatOutputInt,
+    }),
+    new SolidityType({
+        name: 'uint',
+        match: 'prefix',
+        mode: 'value',
+        inputFormatter: f.formatInputInt,
+        outputFormatter: f.formatOutputUInt
+    }),
+    new SolidityType({
+        name: 'bytes',
+        match: 'strict',
+        mode: 'bytes',
+        inputFormatter: f.formatInputDynamicBytes,
+        outputFormatter: f.formatOutputDynamicBytes
+    }),
+    new SolidityType({
+        name: 'bytes',
+        match: 'prefix',
+        mode: 'value',
+        inputFormatter: f.formatInputBytes,
+        outputFormatter: f.formatOutputBytes
+    }),
+    new SolidityType({
+        name: 'real',
+        match: 'prefix',
+        mode: 'value',
+        inputFormatter: f.formatInputReal,
+        outputFormatter: f.formatOutputReal
+    }),
+    new SolidityType({
+        name: 'ureal',
+        match: 'prefix',
+        mode: 'value',
+        inputFormatter: f.formatInputReal,
+        outputFormatter: f.formatOutputUReal
+    })
+]);
+
+module.exports = coder;
+
+
+},{"../utils/utils":8,"./formatters":3,"./param":4,"bignumber.js":"bignumber.js"}],3:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file formatters.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var BigNumber = require('bignumber.js');
+var utils = require('../utils/utils');
+var c = require('../utils/config');
+var SolidityParam = require('./param');
+
+
+/**
+ * Formats input value to byte representation of int
+ * If value is negative, return it's two's complement
+ * If the value is floating point, round it down
+ *
+ * @method formatInputInt
+ * @param {String|Number|BigNumber} value that needs to be formatted
+ * @returns {SolidityParam}
+ */
+var formatInputInt = function (value) {
+    var padding = c.ETH_PADDING * 2;
+    BigNumber.config(c.ETH_BIGNUMBER_ROUNDING_MODE);
+    var result = utils.padLeft(utils.toTwosComplement(value).round().toString(16), padding);
+    return new SolidityParam(result);
+};
+
+/**
+ * Formats input value to byte representation of string
+ *
+ * @method formatInputBytes
+ * @param {String}
+ * @returns {SolidityParam}
+ */
+var formatInputBytes = function (value) {
+    var result = utils.fromAscii(value, c.ETH_PADDING).substr(2);
+    return new SolidityParam(result);
+};
+
+/**
+ * Formats input value to byte representation of string
+ *
+ * @method formatInputDynamicBytes
+ * @param {String}
+ * @returns {SolidityParam}
+ */
+var formatInputDynamicBytes = function (value) {
+    var result = utils.fromAscii(value, c.ETH_PADDING).substr(2);
+    return new SolidityParam(formatInputInt(value.length).value, result);
+};
+
+/**
+ * Formats input value to byte representation of bool
+ *
+ * @method formatInputBool
+ * @param {Boolean}
+ * @returns {SolidityParam}
+ */
+var formatInputBool = function (value) {
+    var result = '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');
+    return new SolidityParam(result);
+};
+
+/**
+ * Formats input value to byte representation of real
+ * Values are multiplied by 2^m and encoded as integers
+ *
+ * @method formatInputReal
+ * @param {String|Number|BigNumber}
+ * @returns {SolidityParam}
+ */
+var formatInputReal = function (value) {
+    return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128)));
+};
+
+/**
+ * Check if input value is negative
+ *
+ * @method signedIsNegative
+ * @param {String} value is hex format
+ * @returns {Boolean} true if it is negative, otherwise false
+ */
+var signedIsNegative = function (value) {
+    return (new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1)) === '1';
+};
+
+/**
+ * Formats right-aligned output bytes to int
+ *
+ * @method formatOutputInt
+ * @param {SolidityParam} param
+ * @returns {BigNumber} right-aligned output bytes formatted to big number
+ */
+var formatOutputInt = function (param) {
+    var value = param.value || "0";
+
+    // check if it's negative number
+    // it it is, return two's complement
+    if (signedIsNegative(value)) {
+        return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);
+    }
+    return new BigNumber(value, 16);
+};
+
+/**
+ * Formats right-aligned output bytes to uint
+ *
+ * @method formatOutputUInt
+ * @param {SolidityParam}
+ * @returns {BigNumeber} right-aligned output bytes formatted to uint
+ */
+var formatOutputUInt = function (param) {
+    var value = param.value || "0";
+    return new BigNumber(value, 16);
+};
+
+/**
+ * Formats right-aligned output bytes to real
+ *
+ * @method formatOutputReal
+ * @param {SolidityParam}
+ * @returns {BigNumber} input bytes formatted to real
+ */
+var formatOutputReal = function (param) {
+    return formatOutputInt(param).dividedBy(new BigNumber(2).pow(128)); 
+};
+
+/**
+ * Formats right-aligned output bytes to ureal
+ *
+ * @method formatOutputUReal
+ * @param {SolidityParam}
+ * @returns {BigNumber} input bytes formatted to ureal
+ */
+var formatOutputUReal = function (param) {
+    return formatOutputUInt(param).dividedBy(new BigNumber(2).pow(128)); 
+};
+
+/**
+ * Should be used to format output bool
+ *
+ * @method formatOutputBool
+ * @param {SolidityParam}
+ * @returns {Boolean} right-aligned input bytes formatted to bool
+ */
+var formatOutputBool = function (param) {
+    return param.value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;
+};
+
+/**
+ * Should be used to format output string
+ *
+ * @method formatOutputBytes
+ * @param {SolidityParam} left-aligned hex representation of string
+ * @returns {String} ascii string
+ */
+var formatOutputBytes = function (param) {
+    // length might also be important!
+    return utils.toAscii(param.value);
+};
+
+/**
+ * Should be used to format output string
+ *
+ * @method formatOutputDynamicBytes
+ * @param {SolidityParam} left-aligned hex representation of string
+ * @returns {String} ascii string
+ */
+var formatOutputDynamicBytes = function (param) {
+    // length might also be important!
+    return utils.toAscii(param.suffix);
+};
+
+/**
+ * Should be used to format output address
+ *
+ * @method formatOutputAddress
+ * @param {SolidityParam} right-aligned input bytes
+ * @returns {String} address
+ */
+var formatOutputAddress = function (param) {
+    var value = param.value;
+    return "0x" + value.slice(value.length - 40, value.length);
+};
+
+module.exports = {
+    formatInputInt: formatInputInt,
+    formatInputBytes: formatInputBytes,
+    formatInputDynamicBytes: formatInputDynamicBytes,
+    formatInputBool: formatInputBool,
+    formatInputReal: formatInputReal,
+    formatOutputInt: formatOutputInt,
+    formatOutputUInt: formatOutputUInt,
+    formatOutputReal: formatOutputReal,
+    formatOutputUReal: formatOutputUReal,
+    formatOutputBool: formatOutputBool,
+    formatOutputBytes: formatOutputBytes,
+    formatOutputDynamicBytes: formatOutputDynamicBytes,
+    formatOutputAddress: formatOutputAddress
+};
+
+
+},{"../utils/config":7,"../utils/utils":8,"./param":4,"bignumber.js":"bignumber.js"}],4:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file param.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+/**
+ * SolidityParam object prototype.
+ * Should be used when encoding, decoding solidity bytes
+ */
+var SolidityParam = function (value, suffix) {
+    this.value = value || '';
+    this.suffix = suffix || '';
+};
+
+/**
+ * This method should be used to encode two params one after another
+ *
+ * @method append
+ * @param {SolidityParam} param that it appended after this
+ */
+SolidityParam.prototype.append = function (param) {
+    this.value += param.value;
+    this.suffix += param.suffix;
+};
+
+/**
+ * This method should be used to encode next param in an array
+ *
+ * @method appendArrayElement
+ * @param {SolidityParam} param that is appended to an array
+ */
+SolidityParam.prototype.appendArrayElement = function (param) {
+    this.suffix += param.value;
+    //this.suffix += param.suffix; // we do not support nested dynamic types
+};
+
+/**
+ * This method should be used to create bytearrays from param
+ *
+ * @method encode
+ * @return {String} encoded param(s)
+ */
+SolidityParam.prototype.encode = function () {
+    return this.value + this.suffix;
+};
+
+/**
+ * This method should be used to shift first param from group of params
+ *
+ * @method shiftValue
+ * @return {SolidityParam} first value param
+ */
+SolidityParam.prototype.shiftValue = function () {
+    var value = this.value.slice(0, 64);
+    this.value = this.value.slice(64);
+    return new SolidityParam(value);
+};
+
+/**
+ * This method should be used to first bytes param from group of params
+ *
+ * @method shiftBytes
+ * @return {SolidityParam} first bytes param
+ */
+SolidityParam.prototype.shiftBytes = function () {
+    return this.shiftArray(1);   
+};
+
+/**
+ * This method should be used to shift an array from group of params 
+ * 
+ * @method shiftArray
+ * @param {Number} size of an array to shift
+ * @return {SolidityParam} first array param
+ */
+SolidityParam.prototype.shiftArray = function (length) {
+    var value = this.value.slice(0, 64);
+    this.value = this.value.slice(64);
+    var suffix = this.suffix.slice(0, 64 * length);
+    this.suffix = this.suffix.slice(64 * length);
+    return new SolidityParam(value, suffix);
+};
+
+module.exports = SolidityParam;
+
+
+},{}],5:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file utils.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+/**
+ * Returns the contstructor with matching number of arguments
+ *
+ * @method getConstructor
+ * @param {Array} abi
+ * @param {Number} numberOfArgs
+ * @returns {Object} constructor function abi
+ */
+var getConstructor = function (abi, numberOfArgs) {
+    return abi.filter(function (f) {
+        return f.type === 'constructor' && f.inputs.length === numberOfArgs;
+    })[0];
+};
+
+module.exports = {
+    getConstructor: getConstructor
+};
+
+
+},{}],6:[function(require,module,exports){
+'use strict';
+
+// go env doesn't have and need XMLHttpRequest
+if (typeof XMLHttpRequest === 'undefined') {
+    exports.XMLHttpRequest = {};
+} else {
+    exports.XMLHttpRequest = XMLHttpRequest; // jshint ignore:line
+}
+
+
+},{}],7:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file config.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+/**
+ * Utils
+ * 
+ * @module utils
+ */
+
+/**
+ * Utility functions
+ * 
+ * @class [utils] config
+ * @constructor
+ */
+
+/// required to define ETH_BIGNUMBER_ROUNDING_MODE
+var BigNumber = require('bignumber.js');
+
+var ETH_UNITS = [ 
+    'wei', 
+    'Kwei', 
+    'Mwei', 
+    'Gwei', 
+    'szabo', 
+    'finney', 
+    'ether', 
+    'grand', 
+    'Mether', 
+    'Gether', 
+    'Tether', 
+    'Pether', 
+    'Eether', 
+    'Zether', 
+    'Yether', 
+    'Nether', 
+    'Dether', 
+    'Vether', 
+    'Uether' 
+];
+
+module.exports = {
+    ETH_PADDING: 32,
+    ETH_SIGNATURE_LENGTH: 4,
+    ETH_UNITS: ETH_UNITS,
+    ETH_BIGNUMBER_ROUNDING_MODE: { ROUNDING_MODE: BigNumber.ROUND_DOWN },
+    ETH_POLLING_TIMEOUT: 1000,
+    defaultBlock: 'latest',
+    defaultAccount: undefined
+};
+
+
+},{"bignumber.js":"bignumber.js"}],8:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file utils.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+/**
+ * Utils
+ * 
+ * @module utils
+ */
+
+/**
+ * Utility functions
+ * 
+ * @class [utils] utils
+ * @constructor
+ */
+
+var BigNumber = require('bignumber.js');
+
+var unitMap = {
+    'wei':      '1',
+    'kwei':     '1000',
+    'ada':      '1000',
+    'mwei':     '1000000',
+    'babbage':  '1000000',
+    'gwei':     '1000000000',
+    'shannon':  '1000000000',
+    'szabo':    '1000000000000',
+    'finney':   '1000000000000000',
+    'ether':    '1000000000000000000',
+    'kether':   '1000000000000000000000',
+    'grand':    '1000000000000000000000',
+    'einstein': '1000000000000000000000',
+    'mether':   '1000000000000000000000000',
+    'gether':   '1000000000000000000000000000',
+    'tether':   '1000000000000000000000000000000'
+};
+
+/**
+ * Should be called to pad string to expected length
+ *
+ * @method padLeft
+ * @param {String} string to be padded
+ * @param {Number} characters that result string should have
+ * @param {String} sign, by default 0
+ * @returns {String} right aligned string
+ */
+var padLeft = function (string, chars, sign) {
+    return new Array(chars - string.length + 1).join(sign ? sign : "0") + string;
+};
+
+/** 
+ * Should be called to get sting from it's hex representation
+ *
+ * @method toAscii
+ * @param {String} string in hex
+ * @returns {String} ascii string representation of hex value
+ */
+var toAscii = function(hex) {
+// Find termination
+    var str = "";
+    var i = 0, l = hex.length;
+    if (hex.substring(0, 2) === '0x') {
+        i = 2;
+    }
+    for (; i < l; i+=2) {
+        var code = parseInt(hex.substr(i, 2), 16);
+        if (code === 0) {
+            break;
+        }
+
+        str += String.fromCharCode(code);
+    }
+
+    return str;
+};
+    
+/**
+ * Shold be called to get hex representation (prefixed by 0x) of ascii string 
+ *
+ * @method toHexNative
+ * @param {String} string
+ * @returns {String} hex representation of input string
+ */
+var toHexNative = function(str) {
+    var hex = "";
+    for(var i = 0; i < str.length; i++) {
+        var n = str.charCodeAt(i).toString(16);
+        hex += n.length < 2 ? '0' + n : n;
+    }
+
+    return hex;
+};
+
+/**
+ * Shold be called to get hex representation (prefixed by 0x) of ascii string 
+ *
+ * @method fromAscii
+ * @param {String} string
+ * @param {Number} optional padding
+ * @returns {String} hex representation of input string
+ */
+var fromAscii = function(str, pad) {
+    pad = pad === undefined ? 0 : pad;
+    var hex = toHexNative(str);
+    while (hex.length < pad*2)
+        hex += "00";
+    return "0x" + hex;
+};
+
+/**
+ * Should be used to create full function/event name from json abi
+ *
+ * @method transformToFullName
+ * @param {Object} json-abi
+ * @return {String} full fnction/event name
+ */
+var transformToFullName = function (json) {
+    if (json.name.indexOf('(') !== -1) {
+        return json.name;
+    }
+
+    var typeName = json.inputs.map(function(i){return i.type; }).join();
+    return json.name + '(' + typeName + ')';
+};
+
+/**
+ * Should be called to get display name of contract function
+ * 
+ * @method extractDisplayName
+ * @param {String} name of function/event
+ * @returns {String} display name for function/event eg. multiply(uint256) -> multiply
+ */
+var extractDisplayName = function (name) {
+    var length = name.indexOf('('); 
+    return length !== -1 ? name.substr(0, length) : name;
+};
+
+/// @returns overloaded part of function/event name
+var extractTypeName = function (name) {
+    /// TODO: make it invulnerable
+    var length = name.indexOf('(');
+    return length !== -1 ? name.substr(length + 1, name.length - 1 - (length + 1)).replace(' ', '') : "";
+};
+
+/**
+ * Converts value to it's decimal representation in string
+ *
+ * @method toDecimal
+ * @param {String|Number|BigNumber}
+ * @return {String}
+ */
+var toDecimal = function (value) {
+    return toBigNumber(value).toNumber();
+};
+
+/**
+ * Converts value to it's hex representation
+ *
+ * @method fromDecimal
+ * @param {String|Number|BigNumber}
+ * @return {String}
+ */
+var fromDecimal = function (value) {
+    var number = toBigNumber(value);
+    var result = number.toString(16);
+
+    return number.lessThan(0) ? '-0x' + result.substr(1) : '0x' + result;
+};
+
+/**
+ * Auto converts any given value into it's hex representation.
+ *
+ * And even stringifys objects before.
+ *
+ * @method toHex
+ * @param {String|Number|BigNumber|Object}
+ * @return {String}
+ */
+var toHex = function (val) {
+    /*jshint maxcomplexity:7 */
+
+    if (isBoolean(val))
+        return fromDecimal(+val);
+
+    if (isBigNumber(val))
+        return fromDecimal(val);
+
+    if (isObject(val))
+        return fromAscii(JSON.stringify(val));
+
+    // if its a negative number, pass it through fromDecimal
+    if (isString(val)) {
+        if (val.indexOf('-0x') === 0)
+           return fromDecimal(val);
+        else if (!isFinite(val))
+            return fromAscii(val);
+    }
+
+    return fromDecimal(val);
+};
+
+/**
+ * Returns value of unit in Wei
+ *
+ * @method getValueOfUnit
+ * @param {String} unit the unit to convert to, default ether
+ * @returns {BigNumber} value of the unit (in Wei)
+ * @throws error if the unit is not correct:w
+ */
+var getValueOfUnit = function (unit) {
+    unit = unit ? unit.toLowerCase() : 'ether';
+    var unitValue = unitMap[unit];
+    if (unitValue === undefined) {
+        throw new Error('This unit doesn\'t exists, please use the one of the following units' + JSON.stringify(unitMap, null, 2));
+    }
+    return new BigNumber(unitValue, 10);
+};
+
+/**
+ * Takes a number of wei and converts it to any other ether unit.
+ *
+ * Possible units are:
+ * - kwei/ada
+ * - mwei/babbage
+ * - gwei/shannon
+ * - szabo
+ * - finney
+ * - ether
+ * - kether/grand/einstein
+ * - mether
+ * - gether
+ * - tether
+ *
+ * @method fromWei
+ * @param {Number|String} number can be a number, number string or a HEX of a decimal
+ * @param {String} unit the unit to convert to, default ether
+ * @return {String|Object} When given a BigNumber object it returns one as well, otherwise a number
+*/
+var fromWei = function(number, unit) {
+    var returnValue = toBigNumber(number).dividedBy(getValueOfUnit(unit));
+
+    return isBigNumber(number) ? returnValue : returnValue.toString(10); 
+};
+
+/**
+ * Takes a number of a unit and converts it to wei.
+ *
+ * Possible units are:
+ * - kwei/ada
+ * - mwei/babbage
+ * - gwei/shannon
+ * - szabo
+ * - finney
+ * - ether
+ * - kether/grand/einstein
+ * - mether
+ * - gether
+ * - tether
+ *
+ * @method toWei
+ * @param {Number|String|BigNumber} number can be a number, number string or a HEX of a decimal
+ * @param {String} unit the unit to convert from, default ether
+ * @return {String|Object} When given a BigNumber object it returns one as well, otherwise a number
+*/
+var toWei = function(number, unit) {
+    var returnValue = toBigNumber(number).times(getValueOfUnit(unit));
+
+    return isBigNumber(number) ? returnValue : returnValue.toString(10); 
+};
+
+/**
+ * Takes an input and transforms it into an bignumber
+ *
+ * @method toBigNumber
+ * @param {Number|String|BigNumber} a number, string, HEX string or BigNumber
+ * @return {BigNumber} BigNumber
+*/
+var toBigNumber = function(number) {
+    /*jshint maxcomplexity:5 */
+    number = number || 0;
+    if (isBigNumber(number))
+        return number;
+
+    if (isString(number) && (number.indexOf('0x') === 0 || number.indexOf('-0x') === 0)) {
+        return new BigNumber(number.replace('0x',''), 16);
+    }
+   
+    return new BigNumber(number.toString(10), 10);
+};
+
+/**
+ * Takes and input transforms it into bignumber and if it is negative value, into two's complement
+ *
+ * @method toTwosComplement
+ * @param {Number|String|BigNumber}
+ * @return {BigNumber}
+ */
+var toTwosComplement = function (number) {
+    var bigNumber = toBigNumber(number);
+    if (bigNumber.lessThan(0)) {
+        return new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16).plus(bigNumber).plus(1);
+    }
+    return bigNumber;
+};
+
+/**
+ * Checks if the given string is strictly an address
+ *
+ * @method isStrictAddress
+ * @param {String} address the given HEX adress
+ * @return {Boolean}
+*/
+var isStrictAddress = function (address) {
+    return /^0x[0-9a-f]{40}$/.test(address);
+};
+
+/**
+ * Checks if the given string is an address
+ *
+ * @method isAddress
+ * @param {String} address the given HEX adress
+ * @return {Boolean}
+*/
+var isAddress = function (address) {
+    return /^(0x)?[0-9a-f]{40}$/.test(address);
+};
+
+/**
+ * Transforms given string to valid 20 bytes-length addres with 0x prefix
+ *
+ * @method toAddress
+ * @param {String} address
+ * @return {String} formatted address
+ */
+var toAddress = function (address) {
+    if (isStrictAddress(address)) {
+        return address;
+    }
+    
+    if (/^[0-9a-f]{40}$/.test(address)) {
+        return '0x' + address;
+    }
+
+    return '0x' + padLeft(toHex(address).substr(2), 40);
+};
+
+/**
+ * Returns true if object is BigNumber, otherwise false
+ *
+ * @method isBigNumber
+ * @param {Object}
+ * @return {Boolean} 
+ */
+var isBigNumber = function (object) {
+    return object instanceof BigNumber ||
+        (object && object.constructor && object.constructor.name === 'BigNumber');
+};
+
+/**
+ * Returns true if object is string, otherwise false
+ * 
+ * @method isString
+ * @param {Object}
+ * @return {Boolean}
+ */
+var isString = function (object) {
+    return typeof object === 'string' ||
+        (object && object.constructor && object.constructor.name === 'String');
+};
+
+/**
+ * Returns true if object is function, otherwise false
+ *
+ * @method isFunction
+ * @param {Object}
+ * @return {Boolean}
+ */
+var isFunction = function (object) {
+    return typeof object === 'function';
+};
+
+/**
+ * Returns true if object is Objet, otherwise false
+ *
+ * @method isObject
+ * @param {Object}
+ * @return {Boolean}
+ */
+var isObject = function (object) {
+    return typeof object === 'object';
+};
+
+/**
+ * Returns true if object is boolean, otherwise false
+ *
+ * @method isBoolean
+ * @param {Object}
+ * @return {Boolean}
+ */
+var isBoolean = function (object) {
+    return typeof object === 'boolean';
+};
+
+/**
+ * Returns true if object is array, otherwise false
+ *
+ * @method isArray
+ * @param {Object}
+ * @return {Boolean}
+ */
+var isArray = function (object) {
+    return object instanceof Array; 
+};
+
+/**
+ * Returns true if given string is valid json object
+ * 
+ * @method isJson
+ * @param {String}
+ * @return {Boolean}
+ */
+var isJson = function (str) {
+    try {
+        return !!JSON.parse(str);
+    } catch (e) {
+        return false;
+    }
+};
+
+module.exports = {
+    padLeft: padLeft,
+    toHex: toHex,
+    toDecimal: toDecimal,
+    fromDecimal: fromDecimal,
+    toAscii: toAscii,
+    fromAscii: fromAscii,
+    transformToFullName: transformToFullName,
+    extractDisplayName: extractDisplayName,
+    extractTypeName: extractTypeName,
+    toWei: toWei,
+    fromWei: fromWei,
+    toBigNumber: toBigNumber,
+    toTwosComplement: toTwosComplement,
+    toAddress: toAddress,
+    isBigNumber: isBigNumber,
+    isStrictAddress: isStrictAddress,
+    isAddress: isAddress,
+    isFunction: isFunction,
+    isString: isString,
+    isObject: isObject,
+    isBoolean: isBoolean,
+    isArray: isArray,
+    isJson: isJson
+};
+
+
+},{"bignumber.js":"bignumber.js"}],9:[function(require,module,exports){
+module.exports={
+    "version": "0.3.5"
+}
+
+},{}],10:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file web3.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Fabian Vogelsteller <fabian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+var version = require('./version.json');
+var net = require('./web3/net');
+var eth = require('./web3/eth');
+var db = require('./web3/db');
+var shh = require('./web3/shh');
+var watches = require('./web3/watches');
+var Filter = require('./web3/filter');
+var utils = require('./utils/utils');
+var formatters = require('./web3/formatters');
+var RequestManager = require('./web3/requestmanager');
+var c = require('./utils/config');
+var Method = require('./web3/method');
+var Property = require('./web3/property');
+
+var web3Methods = [
+    new Method({
+        name: 'sha3',
+        call: 'web3_sha3',
+        params: 1
+    })
+];
+
+var web3Properties = [
+    new Property({
+        name: 'version.client',
+        getter: 'web3_clientVersion'
+    }),
+    new Property({
+        name: 'version.network',
+        getter: 'net_version',
+        inputFormatter: utils.toDecimal
+    }),
+    new Property({
+        name: 'version.ethereum',
+        getter: 'eth_protocolVersion',
+        inputFormatter: utils.toDecimal
+    }),
+    new Property({
+        name: 'version.whisper',
+        getter: 'shh_version',
+        inputFormatter: utils.toDecimal
+    })
+];
+
+/// creates methods in a given object based on method description on input
+/// setups api calls for these methods
+var setupMethods = function (obj, methods) {
+    methods.forEach(function (method) {
+        method.attachToObject(obj);
+    });
+};
+
+/// creates properties in a given object based on properties description on input
+/// setups api calls for these properties
+var setupProperties = function (obj, properties) {
+    properties.forEach(function (property) {
+        property.attachToObject(obj);
+    });
+};
+
+/// setups web3 object, and it's in-browser executed methods
+var web3 = {};
+web3.providers = {};
+web3.version = {};
+web3.version.api = version.version;
+web3.eth = {};
+
+/*jshint maxparams:4 */
+web3.eth.filter = function (fil, eventParams, options, formatter) {
+
+    // if its event, treat it differently
+    // TODO: simplify and remove
+    if (fil._isEvent) {
+        return fil(eventParams, options);
+    }
+
+    // what outputLogFormatter? that's wrong
+    //return new Filter(fil, watches.eth(), formatters.outputLogFormatter);
+    return new Filter(fil, watches.eth(), formatter || formatters.outputLogFormatter);
+};
+/*jshint maxparams:3 */
+
+web3.shh = {};
+web3.shh.filter = function (fil) {
+    return new Filter(fil, watches.shh(), formatters.outputPostFormatter);
+};
+web3.net = {};
+web3.db = {};
+web3.setProvider = function (provider) {
+    RequestManager.getInstance().setProvider(provider);
+};
+web3.reset = function () {
+    RequestManager.getInstance().reset();
+    c.defaultBlock = 'latest';
+    c.defaultAccount = undefined;
+};
+web3.toHex = utils.toHex;
+web3.toAscii = utils.toAscii;
+web3.fromAscii = utils.fromAscii;
+web3.toDecimal = utils.toDecimal;
+web3.fromDecimal = utils.fromDecimal;
+web3.toBigNumber = utils.toBigNumber;
+web3.toWei = utils.toWei;
+web3.fromWei = utils.fromWei;
+web3.isAddress = utils.isAddress;
+
+// ADD defaultblock
+Object.defineProperty(web3.eth, 'defaultBlock', {
+    get: function () {
+        return c.defaultBlock;
+    },
+    set: function (val) {
+        c.defaultBlock = val;
+        return val;
+    }
+});
+
+Object.defineProperty(web3.eth, 'defaultAccount', {
+    get: function () {
+        return c.defaultAccount;
+    },
+    set: function (val) {
+        c.defaultAccount = val;
+        return val;
+    }
+});
+
+/// setups all api methods
+setupMethods(web3, web3Methods);
+setupProperties(web3, web3Properties);
+setupMethods(web3.net, net.methods);
+setupProperties(web3.net, net.properties);
+setupMethods(web3.eth, eth.methods);
+setupProperties(web3.eth, eth.properties);
+setupMethods(web3.db, db.methods);
+setupMethods(web3.shh, shh.methods);
+
+module.exports = web3;
+
+
+},{"./utils/config":7,"./utils/utils":8,"./version.json":9,"./web3/db":12,"./web3/eth":14,"./web3/filter":16,"./web3/formatters":17,"./web3/method":21,"./web3/net":22,"./web3/property":23,"./web3/requestmanager":25,"./web3/shh":26,"./web3/watches":27}],11:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file contract.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2014
+ */
+
+var web3 = require('../web3'); 
+var solAbi = require('../solidity/abi');
+var utils = require('../utils/utils');
+var SolidityEvent = require('./event');
+var SolidityFunction = require('./function');
+
+var addFunctionsToContract = function (contract, desc) {
+    desc.filter(function (json) {
+        return json.type === 'function';
+    }).map(function (json) {
+        return new SolidityFunction(json, contract.address);
+    }).forEach(function (f) {
+        f.attachToContract(contract);
+    });
+};
+
+var addEventsToContract = function (contract, desc) {
+    desc.filter(function (json) {
+        return json.type === 'event';
+    }).map(function (json) {
+        return new SolidityEvent(json, contract.address);
+    }).forEach(function (e) {
+        e.attachToContract(contract);
+    });
+};
+
+/**
+ * This method should be called when we want to call / transact some solidity method from javascript
+ * it returns an object which has same methods available as solidity contract description
+ * usage example: 
+ *
+ * var abi = [{
+ *      name: 'myMethod',
+ *      inputs: [{ name: 'a', type: 'string' }],
+ *      outputs: [{name: 'd', type: 'string' }]
+ * }];  // contract abi
+ *
+ * var MyContract = web3.eth.contract(abi); // creation of contract prototype
+ *
+ * var contractInstance = new MyContract('0x0123123121');
+ *
+ * contractInstance.myMethod('this is test string param for call'); // myMethod call (implicit, default)
+ * contractInstance.call().myMethod('this is test string param for call'); // myMethod call (explicit)
+ * contractInstance.sendTransaction().myMethod('this is test string param for transact'); // myMethod sendTransaction
+ *
+ * @param abi - abi json description of the contract, which is being created
+ * @returns contract object
+ */
+var contract = function (abi) {
+
+    // return prototype
+    return Contract.bind(null, abi);
+};
+
+var Contract = function (abi, options) {
+
+    this.address = '';
+    if (utils.isAddress(options)) {
+        this.address = options;
+    } else { // is an object!
+        // TODO, parse the rest of the args
+        options = options || {};
+        var args = Array.prototype.slice.call(arguments, 2);
+        var bytes = solAbi.formatConstructorParams(abi, args);
+        options.data += bytes;
+        this.address = web3.eth.sendTransaction(options);
+    }
+
+    addFunctionsToContract(this, abi);
+    addEventsToContract(this, abi);
+};
+
+Contract.prototype.call = function () {
+    console.error('contract.call is deprecated');
+    return this;
+};
+
+Contract.prototype.sendTransaction = function () {
+    console.error('contract.sendTransact is deprecated');
+    return this;
+};
+
+module.exports = contract;
+
+
+},{"../solidity/abi":1,"../utils/utils":8,"../web3":10,"./event":15,"./function":18}],12:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file db.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var Method = require('./method');
+
+var putString = new Method({
+    name: 'putString',
+    call: 'db_putString',
+    params: 3
+});
+
+
+var getString = new Method({
+    name: 'getString',
+    call: 'db_getString',
+    params: 2
+});
+
+var putHex = new Method({
+    name: 'putHex',
+    call: 'db_putHex',
+    params: 3
+});
+
+var getHex = new Method({
+    name: 'getHex',
+    call: 'db_getHex',
+    params: 2
+});
+
+var methods = [
+    putString, getString, putHex, getHex
+];
+
+module.exports = {
+    methods: methods
+};
+
+},{"./method":21}],13:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file errors.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+module.exports = {
+    InvalidNumberOfParams: function () {
+        return new Error('Invalid number of input parameters');
+    },
+    InvalidConnection: function (host){
+        return new Error('CONNECTION ERROR: Couldn\'t connect to node '+ host +', is it running?');
+    },
+    InvalidProvider: function () {
+        return new Error('Providor not set or invalid');
+    },
+    InvalidResponse: function (result){
+        var message = !!result && !!result.error && !!result.error.message ? result.error.message : 'Invalid JSON RPC response';
+        return new Error(message);
+    }
+};
+
+
+},{}],14:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file eth.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @author Fabian Vogelsteller <fabian@ethdev.com>
+ * @date 2015
+ */
+
+/**
+ * Web3
+ *
+ * @module web3
+ */
+
+/**
+ * Eth methods and properties
+ *
+ * An example method object can look as follows:
+ *
+ *      {
+ *      name: 'getBlock',
+ *      call: blockCall,
+ *      params: 2,
+ *      outputFormatter: formatters.outputBlockFormatter,
+ *      inputFormatter: [ // can be a formatter funciton or an array of functions. Where each item in the array will be used for one parameter
+ *           utils.toHex, // formats paramter 1
+ *           function(param){ return !!param; } // formats paramter 2
+ *         ]
+ *       },
+ *
+ * @class [web3] eth
+ * @constructor
+ */
+
+"use strict";
+
+var formatters = require('./formatters');
+var utils = require('../utils/utils');
+var Method = require('./method');
+var Property = require('./property');
+
+var blockCall = function (args) {
+    return (utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? "eth_getBlockByHash" : "eth_getBlockByNumber";
+};
+
+var transactionFromBlockCall = function (args) {
+    return (utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? 'eth_getTransactionByBlockHashAndIndex' : 'eth_getTransactionByBlockNumberAndIndex';
+};
+
+var uncleCall = function (args) {
+    return (utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? 'eth_getUncleByBlockHashAndIndex' : 'eth_getUncleByBlockNumberAndIndex';
+};
+
+var getBlockTransactionCountCall = function (args) {
+    return (utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? 'eth_getBlockTransactionCountByHash' : 'eth_getBlockTransactionCountByNumber';
+};
+
+var uncleCountCall = function (args) {
+    return (utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? 'eth_getUncleCountByBlockHash' : 'eth_getUncleCountByBlockNumber';
+};
+
+/// @returns an array of objects describing web3.eth api methods
+
+var getBalance = new Method({
+    name: 'getBalance',
+    call: 'eth_getBalance',
+    params: 2,
+    inputFormatter: [utils.toAddress, formatters.inputDefaultBlockNumberFormatter],
+    outputFormatter: formatters.outputBigNumberFormatter
+});
+
+var getStorageAt = new Method({
+    name: 'getStorageAt',
+    call: 'eth_getStorageAt',
+    params: 3,
+    inputFormatter: [null, utils.toHex, formatters.inputDefaultBlockNumberFormatter]
+});
+
+var getCode = new Method({
+    name: 'getCode',
+    call: 'eth_getCode',
+    params: 2,
+    inputFormatter: [utils.toAddress, formatters.inputDefaultBlockNumberFormatter]
+});
+
+var getBlock = new Method({
+    name: 'getBlock',
+    call: blockCall,
+    params: 2,
+    inputFormatter: [formatters.inputBlockNumberFormatter, function (val) { return !!val; }],
+    outputFormatter: formatters.outputBlockFormatter
+});
+
+var getUncle = new Method({
+    name: 'getUncle',
+    call: uncleCall,
+    params: 2,
+    inputFormatter: [formatters.inputBlockNumberFormatter, utils.toHex],
+    outputFormatter: formatters.outputBlockFormatter,
+
+});
+
+var getCompilers = new Method({
+    name: 'getCompilers',
+    call: 'eth_getCompilers',
+    params: 0
+});
+
+var getBlockTransactionCount = new Method({
+    name: 'getBlockTransactionCount',
+    call: getBlockTransactionCountCall,
+    params: 1,
+    inputFormatter: [formatters.inputBlockNumberFormatter],
+    outputFormatter: utils.toDecimal
+});
+
+var getBlockUncleCount = new Method({
+    name: 'getBlockUncleCount',
+    call: uncleCountCall,
+    params: 1,
+    inputFormatter: [formatters.inputBlockNumberFormatter],
+    outputFormatter: utils.toDecimal
+});
+
+var getTransaction = new Method({
+    name: 'getTransaction',
+    call: 'eth_getTransactionByHash',
+    params: 1,
+    outputFormatter: formatters.outputTransactionFormatter
+});
+
+var getTransactionFromBlock = new Method({
+    name: 'getTransactionFromBlock',
+    call: transactionFromBlockCall,
+    params: 2,
+    inputFormatter: [formatters.inputBlockNumberFormatter, utils.toHex],
+    outputFormatter: formatters.outputTransactionFormatter
+});
+
+var getTransactionCount = new Method({
+    name: 'getTransactionCount',
+    call: 'eth_getTransactionCount',
+    params: 2,
+    inputFormatter: [null, formatters.inputDefaultBlockNumberFormatter],
+    outputFormatter: utils.toDecimal
+});
+
+var sign = new Method({
+    name: 'sign',
+    call: 'eth_sign',
+    params: 1
+});
+
+var sendTransaction = new Method({
+    name: 'sendTransaction',
+    call: 'eth_sendTransaction',
+    params: 1,
+    inputFormatter: [formatters.inputTransactionFormatter]
+});
+
+var call = new Method({
+    name: 'call',
+    call: 'eth_call',
+    params: 2,
+    inputFormatter: [formatters.inputTransactionFormatter, formatters.inputDefaultBlockNumberFormatter]
+});
+
+var compileSolidity = new Method({
+    name: 'compile.solidity',
+    call: 'eth_compileSolidity',
+    params: 1
+});
+
+var compileLLL = new Method({
+    name: 'compile.lll',
+    call: 'eth_compileLLL',
+    params: 1
+});
+
+var compileSerpent = new Method({
+    name: 'compile.serpent',
+    call: 'eth_compileSerpent',
+    params: 1
+});
+
+var methods = [
+    getBalance,
+    getStorageAt,
+    getCode,
+    getBlock,
+    getUncle,
+    getCompilers,
+    getBlockTransactionCount,
+    getBlockUncleCount,
+    getTransaction,
+    getTransactionFromBlock,
+    getTransactionCount,
+    call,
+    sign,
+    sendTransaction,
+    compileSolidity,
+    compileLLL,
+    compileSerpent,
+];
+
+/// @returns an array of objects describing web3.eth api properties
+
+
+
+var properties = [
+    new Property({
+        name: 'coinbase',
+        getter: 'eth_coinbase'
+    }),
+    new Property({
+        name: 'mining',
+        getter: 'eth_mining'
+    }),
+    new Property({
+        name: 'hashrate',
+        getter: 'eth_hashrate',
+        outputFormatter: utils.toDecimal
+    }),
+    new Property({
+        name: 'gasPrice',
+        getter: 'eth_gasPrice',
+        outputFormatter: formatters.outputBigNumberFormatter
+    }),
+    new Property({
+        name: 'accounts',
+        getter: 'eth_accounts'
+    }),
+    new Property({
+        name: 'blockNumber',
+        getter: 'eth_blockNumber',
+        outputFormatter: utils.toDecimal
+    })
+];
+
+module.exports = {
+    methods: methods,
+    properties: properties
+};
+
+
+},{"../utils/utils":8,"./formatters":17,"./method":21,"./property":23}],15:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file event.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2014
+ */
+
+var utils = require('../utils/utils');
+var coder = require('../solidity/coder');
+var web3 = require('../web3');
+var formatters = require('./formatters');
+
+/**
+ * This prototype should be used to create event filters
+ */
+var SolidityEvent = function (json, address) {
+    this._params = json.inputs;
+    this._name = utils.transformToFullName(json);
+    this._address = address;
+    this._anonymous = json.anonymous;
+};
+
+/**
+ * Should be used to get filtered param types
+ *
+ * @method types
+ * @param {Bool} decide if returned typed should be indexed
+ * @return {Array} array of types
+ */
+SolidityEvent.prototype.types = function (indexed) {
+    return this._params.filter(function (i) {
+        return i.indexed === indexed;
+    }).map(function (i) {
+        return i.type;
+    });
+};
+
+/**
+ * Should be used to get event display name
+ *
+ * @method displayName
+ * @return {String} event display name
+ */
+SolidityEvent.prototype.displayName = function () {
+    return utils.extractDisplayName(this._name);
+};
+
+/**
+ * Should be used to get event type name
+ *
+ * @method typeName
+ * @return {String} event type name
+ */
+SolidityEvent.prototype.typeName = function () {
+    return utils.extractTypeName(this._name);
+};
+
+/**
+ * Should be used to get event signature
+ *
+ * @method signature
+ * @return {String} event signature
+ */
+SolidityEvent.prototype.signature = function () {
+    return web3.sha3(web3.fromAscii(this._name)).slice(2);
+};
+
+/**
+ * Should be used to encode indexed params and options to one final object
+ * 
+ * @method encode
+ * @param {Object} indexed
+ * @param {Object} options
+ * @return {Object} everything combined together and encoded
+ */
+SolidityEvent.prototype.encode = function (indexed, options) {
+    indexed = indexed || {};
+    options = options || {};
+    var result = {};
+
+    ['fromBlock', 'toBlock'].filter(function (f) {
+        return options[f] !== undefined;
+    }).forEach(function (f) {
+        result[f] = formatters.inputBlockNumberFormatter(options[f]);
+    });
+
+    result.topics = [];
+
+    if (!this._anonymous) {
+        result.address = this._address;
+        result.topics.push('0x' + this.signature());
+    }
+
+    var indexedTopics = this._params.filter(function (i) {
+        return i.indexed === true;
+    }).map(function (i) {
+        var value = indexed[i.name];
+        if (value === undefined || value === null) {
+            return null;
+        }
+        
+        if (utils.isArray(value)) {
+            return value.map(function (v) {
+                return '0x' + coder.encodeParam(i.type, v);
+            });
+        }
+        return '0x' + coder.encodeParam(i.type, value);
+    });
+
+    result.topics = result.topics.concat(indexedTopics);
+
+    return result;
+};
+
+/**
+ * Should be used to decode indexed params and options
+ *
+ * @method decode
+ * @param {Object} data
+ * @return {Object} result object with decoded indexed && not indexed params
+ */
+SolidityEvent.prototype.decode = function (data) {
+ 
+    data.data = data.data || '';
+    data.topics = data.topics || [];
+
+    var argTopics = this._anonymous ? data.topics : data.topics.slice(1);
+    var indexedData = argTopics.map(function (topics) { return topics.slice(2); }).join("");
+    var indexedParams = coder.decodeParams(this.types(true), indexedData); 
+
+    var notIndexedData = data.data.slice(2);
+    var notIndexedParams = coder.decodeParams(this.types(false), notIndexedData);
+    
+    var result = formatters.outputLogFormatter(data);
+    result.event = this.displayName();
+    result.address = data.address;
+
+    result.args = this._params.reduce(function (acc, current) {
+        acc[current.name] = current.indexed ? indexedParams.shift() : notIndexedParams.shift();
+        return acc;
+    }, {});
+
+    delete result.data;
+    delete result.topics;
+
+    return result;
+};
+
+/**
+ * Should be used to create new filter object from event
+ *
+ * @method execute
+ * @param {Object} indexed
+ * @param {Object} options
+ * @return {Object} filter object
+ */
+SolidityEvent.prototype.execute = function (indexed, options) {
+    var o = this.encode(indexed, options);
+    var formatter = this.decode.bind(this);
+    return web3.eth.filter(o, undefined, undefined, formatter);
+};
+
+/**
+ * Should be used to attach event to contract object
+ *
+ * @method attachToContract
+ * @param {Contract}
+ */
+SolidityEvent.prototype.attachToContract = function (contract) {
+    var execute = this.execute.bind(this);
+    var displayName = this.displayName();
+    if (!contract[displayName]) {
+        contract[displayName] = execute;
+    }
+    contract[displayName][this.typeName()] = this.execute.bind(this, contract);
+};
+
+module.exports = SolidityEvent;
+
+
+},{"../solidity/coder":2,"../utils/utils":8,"../web3":10,"./formatters":17}],16:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file filter.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Fabian Vogelsteller <fabian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+var RequestManager = require('./requestmanager');
+var formatters = require('./formatters');
+var utils = require('../utils/utils');
+
+/**
+* Converts a given topic to a hex string, but also allows null values.
+*
+* @param {Mixed} value
+* @return {String}
+*/
+var toTopic = function(value){
+
+    if(value === null || typeof value === 'undefined')
+        return null;
+
+    value = String(value);
+
+    if(value.indexOf('0x') === 0)
+        return value;
+    else
+        return utils.fromAscii(value);
+};
+
+/// This method should be called on options object, to verify deprecated properties && lazy load dynamic ones
+/// @param should be string or object
+/// @returns options string or object
+var getOptions = function (options) {
+
+    if (utils.isString(options)) {
+        return options;
+    } 
+
+    options = options || {};
+
+    // make sure topics, get converted to hex
+    options.topics = options.topics || [];
+    options.topics = options.topics.map(function(topic){
+        return (utils.isArray(topic)) ? topic.map(toTopic) : toTopic(topic);
+    });
+
+    // lazy load
+    return {
+        topics: options.topics,
+        to: options.to,
+        address: options.address,
+        fromBlock: formatters.inputBlockNumberFormatter(options.fromBlock),
+        toBlock: formatters.inputBlockNumberFormatter(options.toBlock) 
+    }; 
+};
+
+var Filter = function (options, methods, formatter) {
+    var implementation = {};
+    methods.forEach(function (method) {
+        method.attachToObject(implementation);
+    });
+    this.options = getOptions(options);
+    this.implementation = implementation;
+    this.callbacks = [];
+    this.formatter = formatter;
+    this.filterId = this.implementation.newFilter(this.options);
+};
+
+Filter.prototype.watch = function (callback) {
+    this.callbacks.push(callback);
+    var self = this;
+
+    var onMessage = function (error, messages) {
+        if (error) {
+            return self.callbacks.forEach(function (callback) {
+                callback(error);
+            });
+        }
+
+        messages.forEach(function (message) {
+            message = self.formatter ? self.formatter(message) : message;
+            self.callbacks.forEach(function (callback) {
+                callback(null, message);
+            });
+        });
+    };
+
+    // call getFilterLogs on start
+    if (!utils.isString(this.options)) {
+        this.get(function (err, messages) {
+            // don't send all the responses to all the watches again... just to this one
+            if (err) {
+                callback(err);
+            }
+
+            messages.forEach(function (message) {
+                callback(null, message);
+            });
+        });
+    }
+
+    RequestManager.getInstance().startPolling({
+        method: this.implementation.poll.call,
+        params: [this.filterId],
+    }, this.filterId, onMessage, this.stopWatching.bind(this));
+};
+
+Filter.prototype.stopWatching = function () {
+    RequestManager.getInstance().stopPolling(this.filterId);
+    this.implementation.uninstallFilter(this.filterId);
+    this.callbacks = [];
+};
+
+Filter.prototype.get = function (callback) {
+    var self = this;
+    if (utils.isFunction(callback)) {
+        this.implementation.getLogs(this.filterId, function(err, res){
+            if (err) {
+                callback(err);
+            } else {
+                callback(null, res.map(function (log) {
+                    return self.formatter ? self.formatter(log) : log;
+                }));
+            }
+        });
+    } else {
+        var logs = this.implementation.getLogs(this.filterId);
+        return logs.map(function (log) {
+            return self.formatter ? self.formatter(log) : log;
+        });
+    }
+};
+
+module.exports = Filter;
+
+
+},{"../utils/utils":8,"./formatters":17,"./requestmanager":25}],17:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file formatters.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @author Fabian Vogelsteller <fabian@ethdev.com>
+ * @date 2015
+ */
+
+var utils = require('../utils/utils');
+var config = require('../utils/config');
+
+/**
+ * Should the format output to a big number
+ *
+ * @method outputBigNumberFormatter
+ * @param {String|Number|BigNumber}
+ * @returns {BigNumber} object
+ */
+var outputBigNumberFormatter = function (number) {
+    return utils.toBigNumber(number);
+};
+
+var isPredefinedBlockNumber = function (blockNumber) {
+    return blockNumber === 'latest' || blockNumber === 'pending' || blockNumber === 'earliest';
+};
+
+var inputDefaultBlockNumberFormatter = function (blockNumber) {
+    if (blockNumber === undefined) {
+        return config.defaultBlock;
+    }
+    return inputBlockNumberFormatter(blockNumber);
+};
+
+var inputBlockNumberFormatter = function (blockNumber) {
+    if (blockNumber === undefined) {
+        return undefined;
+    } else if (isPredefinedBlockNumber(blockNumber)) {
+        return blockNumber;
+    }
+    return utils.toHex(blockNumber);
+};
+
+/**
+ * Formats the input of a transaction and converts all values to HEX
+ *
+ * @method inputTransactionFormatter
+ * @param {Object} transaction options
+ * @returns object
+*/
+var inputTransactionFormatter = function (options){
+
+    options.from = options.from || config.defaultAccount;
+
+    // make code -> data
+    if (options.code) {
+        options.data = options.code;
+        delete options.code;
+    }
+
+    ['gasPrice', 'gas', 'value'].filter(function (key) {
+        return options[key] !== undefined;
+    }).forEach(function(key){
+        options[key] = utils.fromDecimal(options[key]);
+    });
+
+    return options; 
+};
+
+/**
+ * Formats the output of a transaction to its proper values
+ * 
+ * @method outputTransactionFormatter
+ * @param {Object} transaction
+ * @returns {Object} transaction
+*/
+var outputTransactionFormatter = function (tx){
+    tx.blockNumber = utils.toDecimal(tx.blockNumber);
+    tx.transactionIndex = utils.toDecimal(tx.transactionIndex);
+    tx.nonce = utils.toDecimal(tx.nonce);
+    tx.gas = utils.toDecimal(tx.gas);
+    tx.gasPrice = utils.toBigNumber(tx.gasPrice);
+    tx.value = utils.toBigNumber(tx.value);
+    return tx;
+};
+
+/**
+ * Formats the output of a block to its proper values
+ *
+ * @method outputBlockFormatter
+ * @param {Object} block object 
+ * @returns {Object} block object
+*/
+var outputBlockFormatter = function(block) {
+
+    // transform to number
+    block.gasLimit = utils.toDecimal(block.gasLimit);
+    block.gasUsed = utils.toDecimal(block.gasUsed);
+    block.size = utils.toDecimal(block.size);
+    block.timestamp = utils.toDecimal(block.timestamp);
+    block.number = utils.toDecimal(block.number);
+
+    block.difficulty = utils.toBigNumber(block.difficulty);
+    block.totalDifficulty = utils.toBigNumber(block.totalDifficulty);
+
+    if (utils.isArray(block.transactions)) {
+        block.transactions.forEach(function(item){
+            if(!utils.isString(item))
+                return outputTransactionFormatter(item);
+        });
+    }
+
+    return block;
+};
+
+/**
+ * Formats the output of a log
+ * 
+ * @method outputLogFormatter
+ * @param {Object} log object
+ * @returns {Object} log
+*/
+var outputLogFormatter = function(log) {
+    if (log === null) { // 'pending' && 'latest' filters are nulls
+        return null;
+    }
+
+    log.blockNumber = utils.toDecimal(log.blockNumber);
+    log.transactionIndex = utils.toDecimal(log.transactionIndex);
+    log.logIndex = utils.toDecimal(log.logIndex);
+
+    return log;
+};
+
+/**
+ * Formats the input of a whisper post and converts all values to HEX
+ *
+ * @method inputPostFormatter
+ * @param {Object} transaction object
+ * @returns {Object}
+*/
+var inputPostFormatter = function(post) {
+
+    post.payload = utils.toHex(post.payload);
+    post.ttl = utils.fromDecimal(post.ttl);
+    post.workToProve = utils.fromDecimal(post.workToProve);
+    post.priority = utils.fromDecimal(post.priority);
+
+    // fallback
+    if (!utils.isArray(post.topics)) {
+        post.topics = post.topics ? [post.topics] : [];
+    }
+
+    // format the following options
+    post.topics = post.topics.map(function(topic){
+        return utils.fromAscii(topic);
+    });
+
+    return post; 
+};
+
+/**
+ * Formats the output of a received post message
+ *
+ * @method outputPostFormatter
+ * @param {Object}
+ * @returns {Object}
+ */
+var outputPostFormatter = function(post){
+
+    post.expiry = utils.toDecimal(post.expiry);
+    post.sent = utils.toDecimal(post.sent);
+    post.ttl = utils.toDecimal(post.ttl);
+    post.workProved = utils.toDecimal(post.workProved);
+    post.payloadRaw = post.payload;
+    post.payload = utils.toAscii(post.payload);
+
+    if (utils.isJson(post.payload)) {
+        post.payload = JSON.parse(post.payload);
+    }
+
+    // format the following options
+    if (!post.topics) {
+        post.topics = [];
+    }
+    post.topics = post.topics.map(function(topic){
+        return utils.toAscii(topic);
+    });
+
+    return post;
+};
+
+module.exports = {
+    inputDefaultBlockNumberFormatter: inputDefaultBlockNumberFormatter,
+    inputBlockNumberFormatter: inputBlockNumberFormatter,
+    inputTransactionFormatter: inputTransactionFormatter,
+    inputPostFormatter: inputPostFormatter,
+    outputBigNumberFormatter: outputBigNumberFormatter,
+    outputTransactionFormatter: outputTransactionFormatter,
+    outputBlockFormatter: outputBlockFormatter,
+    outputLogFormatter: outputLogFormatter,
+    outputPostFormatter: outputPostFormatter
+};
+
+
+},{"../utils/config":7,"../utils/utils":8}],18:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file function.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var web3 = require('../web3');
+var coder = require('../solidity/coder');
+var utils = require('../utils/utils');
+
+/**
+ * This prototype should be used to call/sendTransaction to solidity functions
+ */
+var SolidityFunction = function (json, address) {
+    this._inputTypes = json.inputs.map(function (i) {
+        return i.type;
+    });
+    this._outputTypes = json.outputs.map(function (i) {
+        return i.type;
+    });
+    this._constant = json.constant;
+    this._name = utils.transformToFullName(json);
+    this._address = address;
+};
+
+/**
+ * Should be used to create payload from arguments
+ *
+ * @method toPayload
+ * @param {...} solidity function params
+ * @param {Object} optional payload options
+ */
+SolidityFunction.prototype.toPayload = function () {
+    var args = Array.prototype.slice.call(arguments);
+    var options = {};
+    if (args.length > this._inputTypes.length && utils.isObject(args[args.length -1])) {
+        options = args.pop();
+    }
+    options.to = this._address;
+    options.data = '0x' + this.signature() + coder.encodeParams(this._inputTypes, args);
+    return options;
+};
+
+/**
+ * Should be used to get function signature
+ *
+ * @method signature
+ * @return {String} function signature
+ */
+SolidityFunction.prototype.signature = function () {
+    return web3.sha3(web3.fromAscii(this._name)).slice(2, 10);
+};
+
+/**
+ * Should be used to call function
+ * 
+ * @method call
+ * @param {Object} options
+ * @return {String} output bytes
+ */
+SolidityFunction.prototype.call = function () {
+    var payload = this.toPayload.apply(this, Array.prototype.slice.call(arguments));
+    var output = web3.eth.call(payload);
+    output = output.length >= 2 ? output.slice(2) : output;
+    var result = coder.decodeParams(this._outputTypes, output);
+    return result.length === 1 ? result[0] : result;
+};
+
+/**
+ * Should be used to sendTransaction to solidity function
+ *
+ * @method sendTransaction
+ * @param {Object} options
+ */
+SolidityFunction.prototype.sendTransaction = function () {
+    var payload = this.toPayload.apply(this, Array.prototype.slice.call(arguments));
+    web3.eth.sendTransaction(payload);
+};
+
+/**
+ * Should be used to get function display name
+ *
+ * @method displayName
+ * @return {String} display name of the function
+ */
+SolidityFunction.prototype.displayName = function () {
+    return utils.extractDisplayName(this._name);
+};
+
+/**
+ * Should be used to get function type name
+ * 
+ * @method typeName
+ * @return {String} type name of the function
+ */
+SolidityFunction.prototype.typeName = function () {
+    return utils.extractTypeName(this._name);
+};
+
+/**
+ * Should be called to execute function
+ *
+ * @method execute
+ */
+SolidityFunction.prototype.execute = function () {
+    var transaction = !this._constant;
+    
+    // send transaction
+    if (transaction) {
+        return this.sendTransaction.apply(this, Array.prototype.slice.call(arguments));
+    }
+
+    // call
+    return this.call.apply(this, Array.prototype.slice.call(arguments));
+};
+
+/**
+ * Should be called to attach function to contract
+ *
+ * @method attachToContract
+ * @param {Contract}
+ */
+SolidityFunction.prototype.attachToContract = function (contract) {
+    var execute = this.execute.bind(this);
+    execute.call = this.call.bind(this);
+    execute.sendTransaction = this.sendTransaction.bind(this);
+    var displayName = this.displayName();
+    if (!contract[displayName]) {
+        contract[displayName] = execute;
+    }
+    contract[displayName][this.typeName()] = execute; // circular!!!!
+};
+
+module.exports = SolidityFunction;
+
+
+},{"../solidity/coder":2,"../utils/utils":8,"../web3":10}],19:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file httpprovider.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Fabian Vogelsteller <fabian@ethdev.com>
+ * @date 2014
+ */
+
+"use strict";
+
+var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
+var errors = require('./errors');
+
+var HttpProvider = function (host) {
+    this.host = host || 'http://localhost:8545';
+};
+
+HttpProvider.prototype.send = function (payload) {
+    var request = new XMLHttpRequest();
+
+    request.open('POST', this.host, false);
+    
+    try {
+        request.send(JSON.stringify(payload));
+    } catch(error) {
+        throw errors.InvalidConnection(this.host);
+    }
+
+
+    // check request.status
+    // TODO: throw an error here! it cannot silently fail!!!
+    //if (request.status !== 200) {
+        //return;
+    //}
+    return JSON.parse(request.responseText);
+};
+
+HttpProvider.prototype.sendAsync = function (payload, callback) {
+    var request = new XMLHttpRequest();
+    request.onreadystatechange = function() {
+        if (request.readyState === 4) {
+            // TODO: handle the error properly here!!!
+            callback(null, JSON.parse(request.responseText));
+        }
+    };
+
+    request.open('POST', this.host, true);
+
+    try {
+        request.send(JSON.stringify(payload));
+    } catch(error) {
+        callback(errors.InvalidConnection(this.host));
+    }
+};
+
+module.exports = HttpProvider;
+
+
+},{"./errors":13,"xmlhttprequest":6}],20:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file jsonrpc.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var Jsonrpc = function () {
+    // singleton pattern
+    if (arguments.callee._singletonInstance) {
+        return arguments.callee._singletonInstance;
+    }
+    arguments.callee._singletonInstance = this;
+
+    this.messageId = 1;
+};
+
+/**
+ * @return {Jsonrpc} singleton
+ */
+Jsonrpc.getInstance = function () {
+    var instance = new Jsonrpc();
+    return instance;
+};
+
+/**
+ * Should be called to valid json create payload object
+ *
+ * @method toPayload
+ * @param {Function} method of jsonrpc call, required
+ * @param {Array} params, an array of method params, optional
+ * @returns {Object} valid jsonrpc payload object
+ */
+Jsonrpc.prototype.toPayload = function (method, params) {
+    if (!method)
+        console.error('jsonrpc method should be specified!');
+
+    return {
+        jsonrpc: '2.0',
+        method: method,
+        params: params || [],
+        id: this.messageId++
+    };
+};
+
+/**
+ * Should be called to check if jsonrpc response is valid
+ *
+ * @method isValidResponse
+ * @param {Object}
+ * @returns {Boolean} true if response is valid, otherwise false
+ */
+Jsonrpc.prototype.isValidResponse = function (response) {
+    return !!response &&
+        !response.error &&
+        response.jsonrpc === '2.0' &&
+        typeof response.id === 'number' &&
+        response.result !== undefined; // only undefined is not valid json object
+};
+
+/**
+ * Should be called to create batch payload object
+ *
+ * @method toBatchPayload
+ * @param {Array} messages, an array of objects with method (required) and params (optional) fields
+ * @returns {Array} batch payload
+ */
+Jsonrpc.prototype.toBatchPayload = function (messages) {
+    var self = this;
+    return messages.map(function (message) {
+        return self.toPayload(message.method, message.params);
+    });
+};
+
+module.exports = Jsonrpc;
+
+
+},{}],21:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file method.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var RequestManager = require('./requestmanager');
+var utils = require('../utils/utils');
+var errors = require('./errors');
+
+var Method = function (options) {
+    this.name = options.name;
+    this.call = options.call;
+    this.params = options.params || 0;
+    this.inputFormatter = options.inputFormatter;
+    this.outputFormatter = options.outputFormatter;
+};
+
+/**
+ * Should be used to determine name of the jsonrpc method based on arguments
+ *
+ * @method getCall
+ * @param {Array} arguments
+ * @return {String} name of jsonrpc method
+ */
+Method.prototype.getCall = function (args) {
+    return utils.isFunction(this.call) ? this.call(args) : this.call;
+};
+
+/**
+ * Should be used to extract callback from array of arguments. Modifies input param
+ *
+ * @method extractCallback
+ * @param {Array} arguments
+ * @return {Function|Null} callback, if exists
+ */
+Method.prototype.extractCallback = function (args) {
+    if (utils.isFunction(args[args.length - 1])) {
+        return args.pop(); // modify the args array!
+    }
+    return null;
+};
+
+/**
+ * Should be called to check if the number of arguments is correct
+ * 
+ * @method validateArgs
+ * @param {Array} arguments
+ * @throws {Error} if it is not
+ */
+Method.prototype.validateArgs = function (args) {
+    if (args.length !== this.params) {
+        throw errors.InvalidNumberOfParams();
+    }
+};
+
+/**
+ * Should be called to format input args of method
+ * 
+ * @method formatInput
+ * @param {Array}
+ * @return {Array}
+ */
+Method.prototype.formatInput = function (args) {
+    if (!this.inputFormatter) {
+        return args;
+    }
+
+    return this.inputFormatter.map(function (formatter, index) {
+        return formatter ? formatter(args[index]) : args[index];
+    });
+};
+
+/**
+ * Should be called to format output(result) of method
+ *
+ * @method formatOutput
+ * @param {Object}
+ * @return {Object}
+ */
+Method.prototype.formatOutput = function (result) {
+    return this.outputFormatter && result !== null ? this.outputFormatter(result) : result;
+};
+
+/**
+ * Should attach function to method
+ * 
+ * @method attachToObject
+ * @param {Object}
+ * @param {Function}
+ */
+Method.prototype.attachToObject = function (obj) {
+    var func = this.send.bind(this);
+    func.call = this.call; // that's ugly. filter.js uses it
+    var name = this.name.split('.');
+    if (name.length > 1) {
+        obj[name[0]] = obj[name[0]] || {};
+        obj[name[0]][name[1]] = func;
+    } else {
+        obj[name[0]] = func; 
+    }
+};
+
+/**
+ * Should create payload from given input args
+ *
+ * @method toPayload
+ * @param {Array} args
+ * @return {Object}
+ */
+Method.prototype.toPayload = function (args) {
+    var call = this.getCall(args);
+    var callback = this.extractCallback(args);
+    var params = this.formatInput(args);
+    this.validateArgs(params);
+
+    return {
+        method: call,
+        params: params,
+        callback: callback
+    };
+};
+
+/**
+ * Should send request to the API
+ *
+ * @method send
+ * @param list of params
+ * @return result
+ */
+Method.prototype.send = function () {
+    var payload = this.toPayload(Array.prototype.slice.call(arguments));
+    if (payload.callback) {
+        var self = this;
+        return RequestManager.getInstance().sendAsync(payload, function (err, result) {
+            payload.callback(null, self.formatOutput(result));
+        });
+    }
+    return this.formatOutput(RequestManager.getInstance().send(payload));
+};
+
+module.exports = Method;
+
+
+},{"../utils/utils":8,"./errors":13,"./requestmanager":25}],22:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file eth.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var utils = require('../utils/utils');
+var Property = require('./property');
+
+/// @returns an array of objects describing web3.eth api methods
+var methods = [
+];
+
+/// @returns an array of objects describing web3.eth api properties
+var properties = [
+    new Property({
+        name: 'listening',
+        getter: 'net_listening'
+    }),
+    new Property({
+        name: 'peerCount',
+        getter: 'net_peerCount',
+        outputFormatter: utils.toDecimal
+    })
+];
+
+
+module.exports = {
+    methods: methods,
+    properties: properties
+};
+
+
+},{"../utils/utils":8,"./property":23}],23:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file property.js
+ * @author Fabian Vogelsteller <fabian@frozeman.de>
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var RequestManager = require('./requestmanager');
+
+var Property = function (options) {
+    this.name = options.name;
+    this.getter = options.getter;
+    this.setter = options.setter;
+    this.outputFormatter = options.outputFormatter;
+    this.inputFormatter = options.inputFormatter;
+};
+
+/**
+ * Should be called to format input args of method
+ * 
+ * @method formatInput
+ * @param {Array}
+ * @return {Array}
+ */
+Property.prototype.formatInput = function (arg) {
+    return this.inputFormatter ? this.inputFormatter(arg) : arg;
+};
+
+/**
+ * Should be called to format output(result) of method
+ *
+ * @method formatOutput
+ * @param {Object}
+ * @return {Object}
+ */
+Property.prototype.formatOutput = function (result) {
+    return this.outputFormatter && result !== null ? this.outputFormatter(result) : result;
+};
+
+/**
+ * Should attach function to method
+ * 
+ * @method attachToObject
+ * @param {Object}
+ * @param {Function}
+ */
+Property.prototype.attachToObject = function (obj) {
+    var proto = {
+        get: this.get.bind(this),
+        set: this.set.bind(this)
+    };
+
+    var name = this.name.split('.');
+    if (name.length > 1) {
+        obj[name[0]] = obj[name[0]] || {};
+        Object.defineProperty(obj[name[0]], name[1], proto); 
+    } else {
+        Object.defineProperty(obj, name[0], proto);
+    }
+};
+
+/**
+ * Should be used to get value of the property
+ *
+ * @method get
+ * @return {Object} value of the property
+ */
+Property.prototype.get = function () {
+    return this.formatOutput(RequestManager.getInstance().send({
+        method: this.getter
+    }));
+};
+
+/**
+ * Should be used to set value of the property
+ *
+ * @method set
+ * @param {Object} new value of the property
+ */
+Property.prototype.set = function (value) {
+    return RequestManager.getInstance().send({
+        method: this.setter,
+        params: [this.formatInput(value)]
+    });
+};
+
+module.exports = Property;
+
+
+},{"./requestmanager":25}],24:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file qtsync.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ * @date 2014
+ */
+
+var QtSyncProvider = function () {
+};
+
+QtSyncProvider.prototype.send = function (payload) {
+    var result = navigator.qt.callMethod(JSON.stringify(payload));
+    return JSON.parse(result);
+};
+
+module.exports = QtSyncProvider;
+
+
+},{}],25:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file requestmanager.js
+ * @author Jeffrey Wilcke <jeff@ethdev.com>
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @author Marian Oancea <marian@ethdev.com>
+ * @author Fabian Vogelsteller <fabian@ethdev.com>
+ * @author Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+var Jsonrpc = require('./jsonrpc');
+var utils = require('../utils/utils');
+var c = require('../utils/config');
+var errors = require('./errors');
+
+/**
+ * It's responsible for passing messages to providers
+ * It's also responsible for polling the ethereum node for incoming messages
+ * Default poll timeout is 1 second
+ * Singleton
+ */
+var RequestManager = function (provider) {
+    // singleton pattern
+    if (arguments.callee._singletonInstance) {
+        return arguments.callee._singletonInstance;
+    }
+    arguments.callee._singletonInstance = this;
+
+    this.provider = provider;
+    this.polls = [];
+    this.timeout = null;
+    this.poll();
+};
+
+/**
+ * @return {RequestManager} singleton
+ */
+RequestManager.getInstance = function () {
+    var instance = new RequestManager();
+    return instance;
+};
+
+/**
+ * Should be used to synchronously send request
+ *
+ * @method send
+ * @param {Object} data
+ * @return {Object}
+ */
+RequestManager.prototype.send = function (data) {
+    if (!this.provider) {
+        console.error(errors.InvalidProvider());
+        return null;
+    }
+
+    var payload = Jsonrpc.getInstance().toPayload(data.method, data.params);
+    var result = this.provider.send(payload);
+
+    if (!Jsonrpc.getInstance().isValidResponse(result)) {
+        throw errors.InvalidResponse(result);
+    }
+
+    return result.result;
+};
+
+/**
+ * Should be used to asynchronously send request
+ *
+ * @method sendAsync
+ * @param {Object} data
+ * @param {Function} callback
+ */
+RequestManager.prototype.sendAsync = function (data, callback) {
+    if (!this.provider) {
+        return callback(errors.InvalidProvider());
+    }
+
+    var payload = Jsonrpc.getInstance().toPayload(data.method, data.params);
+    this.provider.sendAsync(payload, function (err, result) {
+        if (err) {
+            return callback(err);
+        }
+        
+        if (!Jsonrpc.getInstance().isValidResponse(result)) {
+            return callback(errors.InvalidResponse(result));
+        }
+
+        callback(null, result.result);
+    });
+};
+
+/**
+ * Should be used to set provider of request manager
+ *
+ * @method setProvider
+ * @param {Object}
+ */
+RequestManager.prototype.setProvider = function (p) {
+    this.provider = p;
+};
+
+/*jshint maxparams:4 */
+
+/**
+ * Should be used to start polling
+ *
+ * @method startPolling
+ * @param {Object} data
+ * @param {Number} pollId
+ * @param {Function} callback
+ * @param {Function} uninstall
+ *
+ * @todo cleanup number of params
+ */
+RequestManager.prototype.startPolling = function (data, pollId, callback, uninstall) {
+    this.polls.push({data: data, id: pollId, callback: callback, uninstall: uninstall});
+};
+/*jshint maxparams:3 */
+
+/**
+ * Should be used to stop polling for filter with given id
+ *
+ * @method stopPolling
+ * @param {Number} pollId
+ */
+RequestManager.prototype.stopPolling = function (pollId) {
+    for (var i = this.polls.length; i--;) {
+        var poll = this.polls[i];
+        if (poll.id === pollId) {
+            this.polls.splice(i, 1);
+        }
+    }
+};
+
+/**
+ * Should be called to reset polling mechanism of request manager
+ *
+ * @method reset
+ */
+RequestManager.prototype.reset = function () {
+    this.polls.forEach(function (poll) {
+        poll.uninstall(poll.id); 
+    });
+    this.polls = [];
+
+    if (this.timeout) {
+        clearTimeout(this.timeout);
+        this.timeout = null;
+    }
+    this.poll();
+};
+
+/**
+ * Should be called to poll for changes on filter with given id
+ *
+ * @method poll
+ */
+RequestManager.prototype.poll = function () {
+    this.timeout = setTimeout(this.poll.bind(this), c.ETH_POLLING_TIMEOUT);
+
+    if (!this.polls.length) {
+        return;
+    }
+
+    if (!this.provider) {
+        console.error(errors.InvalidProvider());
+        return;
+    }
+
+    var payload = Jsonrpc.getInstance().toBatchPayload(this.polls.map(function (data) {
+        return data.data;
+    }));
+
+    var self = this;
+    this.provider.sendAsync(payload, function (error, results) {
+        // TODO: console log?
+        if (error) {
+            return;
+        }
+            
+        if (!utils.isArray(results)) {
+            throw errors.InvalidResponse(results);
+        }
+
+        results.map(function (result, index) {
+            result.callback = self.polls[index].callback;
+            return result;
+        }).filter(function (result) {
+            var valid = Jsonrpc.getInstance().isValidResponse(result);
+            if (!valid) {
+                result.callback(errors.InvalidResponse(result));
+            }
+            return valid;
+        }).filter(function (result) {
+            return utils.isArray(result.result) && result.result.length > 0;
+        }).forEach(function (result) {
+            result.callback(null, result.result);
+        });
+    });
+};
+
+module.exports = RequestManager;
+
+
+},{"../utils/config":7,"../utils/utils":8,"./errors":13,"./jsonrpc":20}],26:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file shh.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var Method = require('./method');
+var formatters = require('./formatters');
+
+var post = new Method({
+    name: 'post', 
+    call: 'shh_post', 
+    params: 1,
+    inputFormatter: [formatters.inputPostFormatter]
+});
+
+var newIdentity = new Method({
+    name: 'newIdentity',
+    call: 'shh_newIdentity',
+    params: 0
+});
+
+var hasIdentity = new Method({
+    name: 'hasIdentity',
+    call: 'shh_hasIdentity',
+    params: 1
+});
+
+var newGroup = new Method({
+    name: 'newGroup',
+    call: 'shh_newGroup',
+    params: 0
+});
+
+var addToGroup = new Method({
+    name: 'addToGroup',
+    call: 'shh_addToGroup',
+    params: 0
+});
+
+var methods = [
+    post,
+    newIdentity,
+    hasIdentity,
+    newGroup,
+    addToGroup
+];
+
+module.exports = {
+    methods: methods
+};
+
+
+},{"./formatters":17,"./method":21}],27:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file watches.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var Method = require('./method');
+
+/// @returns an array of objects describing web3.eth.filter api methods
+var eth = function () {
+    var newFilterCall = function (args) {
+        return typeof args[0] === 'string' ? 'eth_newBlockFilter' : 'eth_newFilter';
+    };
+
+    var newFilter = new Method({
+        name: 'newFilter',
+        call: newFilterCall,
+        params: 1
+    });
+
+    var uninstallFilter = new Method({
+        name: 'uninstallFilter',
+        call: 'eth_uninstallFilter',
+        params: 1
+    });
+
+    var getLogs = new Method({
+        name: 'getLogs',
+        call: 'eth_getFilterLogs',
+        params: 1
+    });
+
+    var poll = new Method({
+        name: 'poll',
+        call: 'eth_getFilterChanges',
+        params: 1
+    });
+
+    return [
+        newFilter,
+        uninstallFilter,
+        getLogs,
+        poll
+    ];
+};
+
+/// @returns an array of objects describing web3.shh.watch api methods
+var shh = function () {
+    var newFilter = new Method({
+        name: 'newFilter',
+        call: 'shh_newFilter',
+        params: 1
+    });
+
+    var uninstallFilter = new Method({
+        name: 'uninstallFilter',
+        call: 'shh_uninstallFilter',
+        params: 1
+    });
+
+    var getLogs = new Method({
+        name: 'getLogs',
+        call: 'shh_getMessages',
+        params: 1
+    });
+
+    var poll = new Method({
+        name: 'poll',
+        call: 'shh_getFilterChanges',
+        params: 1
+    });
+
+    return [
+        newFilter,
+        uninstallFilter,
+        getLogs,
+        poll
+    ];
+};
+
+module.exports = {
+    eth: eth,
+    shh: shh
+};
+
+
+},{"./method":21}],28:[function(require,module,exports){
+
+},{}],"bignumber.js":[function(require,module,exports){
+'use strict';
+
+module.exports = BigNumber; // jshint ignore:line
+
+
+},{}],"web3":[function(require,module,exports){
+var web3 = require('./lib/web3');
+web3.providers.HttpProvider = require('./lib/web3/httpprovider');
+web3.providers.QtSyncProvider = require('./lib/web3/qtsync');
+web3.eth.contract = require('./lib/web3/contract');
+web3.abi = require('./lib/solidity/abi');
+
+// dont override global variable
+if (typeof window !== 'undefined' && typeof window.web3 === 'undefined') {
+    window.web3 = web3;
+}
+
+module.exports = web3;
+
+
+},{"./lib/solidity/abi":1,"./lib/web3":10,"./lib/web3/contract":11,"./lib/web3/httpprovider":19,"./lib/web3/qtsync":24}]},{},["web3"])
+
+
+//# sourceMappingURL=web3-light.js.map
+`
diff --git a/rpc/args.go b/rpc/args.go
index 6c98d1267..686872a59 100644
--- a/rpc/args.go
+++ b/rpc/args.go
@@ -171,6 +171,41 @@ type NewSigArgs struct {
 	Data string
 }
 
+func (args *NewSigArgs) UnmarshalJSON(b []byte) (err error) {
+	var obj []json.RawMessage
+	var ext struct {
+		From string
+		Data string
+	}
+
+	// Decode byte slice to array of RawMessages
+	if err := json.Unmarshal(b, &obj); err != nil {
+		return NewDecodeParamError(err.Error())
+	}
+
+	// Check for sufficient params
+	if len(obj) < 1 {
+		return NewInsufficientParamsError(len(obj), 1)
+	}
+
+	// Decode 0th RawMessage to temporary struct
+	if err := json.Unmarshal(obj[0], &ext); err != nil {
+		return NewDecodeParamError(err.Error())
+	}
+
+	if len(ext.From) == 0 {
+		return NewValidationError("from", "is required")
+	}
+
+	if len(ext.Data) == 0 {
+		return NewValidationError("data", "is required")
+	}
+
+	args.From = ext.From
+	args.Data = ext.Data
+	return nil
+}
+
 func (args *NewTxArgs) UnmarshalJSON(b []byte) (err error) {
 	var obj []json.RawMessage
 	var ext struct {
diff --git a/rpc/jeth.go b/rpc/jeth.go
index 4739316b2..ad52b72d7 100644
--- a/rpc/jeth.go
+++ b/rpc/jeth.go
@@ -2,7 +2,6 @@ package rpc
 
 import (
 	"encoding/json"
-
 	"github.com/ethereum/go-ethereum/jsre"
 	"github.com/robertkrimen/otto"
 )
@@ -35,7 +34,6 @@ func (self *Jeth) Send(call otto.FunctionCall) (response otto.Value) {
 	}
 
 	jsonreq, err := json.Marshal(reqif)
-
 	var reqs []RpcRequest
 	batch := true
 	err = json.Unmarshal(jsonreq, &reqs)