contracts/ens: Add ENS contract binding

6 files changed, 1393 insertions, 0 deletions

diff --git a/build/update-license.go b/build/update-license.go
index 803f7e8fd..4a6ce064e 100644
--- a/build/update-license.go
+++ b/build/update-license.go
@@ -50,6 +50,8 @@ var (
 		"crypto/sha3/", "crypto/ecies/", "logger/glog/",
 		"crypto/secp256k1/curve.go",
 		"trie/arc.go",
+		// don't license generated files
+		"contracts/ens/contract/",
 	}
 
 	// paths with this prefix are licensed as GPL. all other files are LGPL.
diff --git a/contracts/ens/README.md b/contracts/ens/README.md
new file mode 100644
index 000000000..68c5e9769
--- /dev/null
+++ b/contracts/ens/README.md
@@ -0,0 +1,20 @@
+# Swarm ENS interface
+
+## Usage
+
+Full documentation for the Ethereum Name Service [can be found as EIP 137](https://github.com/ethereum/EIPs/issues/137).
+This package offers a simple binding that streamlines the registration arbitrary utf8 domain names to swarm content hashes.
+
+## Development
+
+The SOL file in contract subdirectory implements the ENS root registry, a simple first-in-first-served registrar for the root namespace, and a simple resolver contract; they're used in tests, and can be used to deploy these contracts for your own purposes.
+
+The solidity source code can be found at [github.com/arachnid/ens/](https://github.com/arachnid/ens/).
+
+The go bindings for ENS contracts are generated using `abigen` via the go generator:
+
+```shell
+godep go generate ./swarm/services/ens
+```
+
+see the preprocessor directives in leading comments of ens.go and ens_test.go
diff --git a/contracts/ens/contract/ens.go b/contracts/ens/contract/ens.go
new file mode 100644
index 000000000..34c156e3f
--- /dev/null
+++ b/contracts/ens/contract/ens.go
@@ -0,0 +1,900 @@
+// This file is an automatically generated Go binding. Do not modify as any
+// change will likely be lost upon the next re-generation!
+
+package contract
+
+import (
+	"strings"
+
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// ENSABI is the input ABI used to generate the binding from.
+const ENSABI = `[{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"resolver","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"owner","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"resolver","type":"address"}],"name":"setResolver","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"label","type":"bytes32"},{"name":"owner","type":"address"}],"name":"setOwner","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"owner","type":"address"}],"name":"setOwner","outputs":[],"type":"function"},{"inputs":[{"name":"owner","type":"address"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":true,"name":"label","type":"bytes32"},{"indexed":false,"name":"owner","type":"address"}],"name":"NewOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"owner","type":"address"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"resolver","type":"address"}],"name":"NewResolver","type":"event"}]`
+
+// ENSBin is the compiled bytecode used for deploying new contracts.
+const ENSBin = `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`
+
+// DeployENS deploys a new Ethereum contract, binding an instance of ENS to it.
+func DeployENS(auth *bind.TransactOpts, backend bind.ContractBackend, owner common.Address) (common.Address, *types.Transaction, *ENS, error) {
+	parsed, err := abi.JSON(strings.NewReader(ENSABI))
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(ENSBin), backend, owner)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &ENS{ENSCaller: ENSCaller{contract: contract}, ENSTransactor: ENSTransactor{contract: contract}}, nil
+}
+
+// ENS is an auto generated Go binding around an Ethereum contract.
+type ENS struct {
+	ENSCaller     // Read-only binding to the contract
+	ENSTransactor // Write-only binding to the contract
+}
+
+// ENSCaller is an auto generated read-only Go binding around an Ethereum contract.
+type ENSCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ENSTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type ENSTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ENSSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type ENSSession struct {
+	Contract     *ENS              // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// ENSCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type ENSCallerSession struct {
+	Contract *ENSCaller    // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts // Call options to use throughout this session
+}
+
+// ENSTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type ENSTransactorSession struct {
+	Contract     *ENSTransactor    // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// ENSRaw is an auto generated low-level Go binding around an Ethereum contract.
+type ENSRaw struct {
+	Contract *ENS // Generic contract binding to access the raw methods on
+}
+
+// ENSCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type ENSCallerRaw struct {
+	Contract *ENSCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// ENSTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type ENSTransactorRaw struct {
+	Contract *ENSTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewENS creates a new instance of ENS, bound to a specific deployed contract.
+func NewENS(address common.Address, backend bind.ContractBackend) (*ENS, error) {
+	contract, err := bindENS(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor))
+	if err != nil {
+		return nil, err
+	}
+	return &ENS{ENSCaller: ENSCaller{contract: contract}, ENSTransactor: ENSTransactor{contract: contract}}, nil
+}
+
+// NewENSCaller creates a new read-only instance of ENS, bound to a specific deployed contract.
+func NewENSCaller(address common.Address, caller bind.ContractCaller) (*ENSCaller, error) {
+	contract, err := bindENS(address, caller, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &ENSCaller{contract: contract}, nil
+}
+
+// NewENSTransactor creates a new write-only instance of ENS, bound to a specific deployed contract.
+func NewENSTransactor(address common.Address, transactor bind.ContractTransactor) (*ENSTransactor, error) {
+	contract, err := bindENS(address, nil, transactor)
+	if err != nil {
+		return nil, err
+	}
+	return &ENSTransactor{contract: contract}, nil
+}
+
+// bindENS binds a generic wrapper to an already deployed contract.
+func bindENS(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(ENSABI))
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, parsed, caller, transactor), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_ENS *ENSRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _ENS.Contract.ENSCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_ENS *ENSRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _ENS.Contract.ENSTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_ENS *ENSRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _ENS.Contract.ENSTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_ENS *ENSCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _ENS.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_ENS *ENSTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _ENS.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_ENS *ENSTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _ENS.Contract.contract.Transact(opts, method, params...)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x02571be3.
+//
+// Solidity: function owner(node bytes32) constant returns(address)
+func (_ENS *ENSCaller) Owner(opts *bind.CallOpts, node [32]byte) (common.Address, error) {
+	var (
+		ret0 = new(common.Address)
+	)
+	out := ret0
+	err := _ENS.contract.Call(opts, out, "owner", node)
+	return *ret0, err
+}
+
+// Owner is a free data retrieval call binding the contract method 0x02571be3.
+//
+// Solidity: function owner(node bytes32) constant returns(address)
+func (_ENS *ENSSession) Owner(node [32]byte) (common.Address, error) {
+	return _ENS.Contract.Owner(&_ENS.CallOpts, node)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x02571be3.
+//
+// Solidity: function owner(node bytes32) constant returns(address)
+func (_ENS *ENSCallerSession) Owner(node [32]byte) (common.Address, error) {
+	return _ENS.Contract.Owner(&_ENS.CallOpts, node)
+}
+
+// Resolver is a free data retrieval call binding the contract method 0x0178b8bf.
+//
+// Solidity: function resolver(node bytes32) constant returns(address)
+func (_ENS *ENSCaller) Resolver(opts *bind.CallOpts, node [32]byte) (common.Address, error) {
+	var (
+		ret0 = new(common.Address)
+	)
+	out := ret0
+	err := _ENS.contract.Call(opts, out, "resolver", node)
+	return *ret0, err
+}
+
+// Resolver is a free data retrieval call binding the contract method 0x0178b8bf.
+//
+// Solidity: function resolver(node bytes32) constant returns(address)
+func (_ENS *ENSSession) Resolver(node [32]byte) (common.Address, error) {
+	return _ENS.Contract.Resolver(&_ENS.CallOpts, node)
+}
+
+// Resolver is a free data retrieval call binding the contract method 0x0178b8bf.
+//
+// Solidity: function resolver(node bytes32) constant returns(address)
+func (_ENS *ENSCallerSession) Resolver(node [32]byte) (common.Address, error) {
+	return _ENS.Contract.Resolver(&_ENS.CallOpts, node)
+}
+
+// SetOwner is a paid mutator transaction binding the contract method 0x5b0fc9c3.
+//
+// Solidity: function setOwner(node bytes32, owner address) returns()
+func (_ENS *ENSTransactor) SetOwner(opts *bind.TransactOpts, node [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _ENS.contract.Transact(opts, "setOwner", node, owner)
+}
+
+// SetOwner is a paid mutator transaction binding the contract method 0x5b0fc9c3.
+//
+// Solidity: function setOwner(node bytes32, owner address) returns()
+func (_ENS *ENSSession) SetOwner(node [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _ENS.Contract.SetOwner(&_ENS.TransactOpts, node, owner)
+}
+
+// SetOwner is a paid mutator transaction binding the contract method 0x5b0fc9c3.
+//
+// Solidity: function setOwner(node bytes32, owner address) returns()
+func (_ENS *ENSTransactorSession) SetOwner(node [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _ENS.Contract.SetOwner(&_ENS.TransactOpts, node, owner)
+}
+
+// SetResolver is a paid mutator transaction binding the contract method 0x1896f70a.
+//
+// Solidity: function setResolver(node bytes32, resolver address) returns()
+func (_ENS *ENSTransactor) SetResolver(opts *bind.TransactOpts, node [32]byte, resolver common.Address) (*types.Transaction, error) {
+	return _ENS.contract.Transact(opts, "setResolver", node, resolver)
+}
+
+// SetResolver is a paid mutator transaction binding the contract method 0x1896f70a.
+//
+// Solidity: function setResolver(node bytes32, resolver address) returns()
+func (_ENS *ENSSession) SetResolver(node [32]byte, resolver common.Address) (*types.Transaction, error) {
+	return _ENS.Contract.SetResolver(&_ENS.TransactOpts, node, resolver)
+}
+
+// SetResolver is a paid mutator transaction binding the contract method 0x1896f70a.
+//
+// Solidity: function setResolver(node bytes32, resolver address) returns()
+func (_ENS *ENSTransactorSession) SetResolver(node [32]byte, resolver common.Address) (*types.Transaction, error) {
+	return _ENS.Contract.SetResolver(&_ENS.TransactOpts, node, resolver)
+}
+
+// FIFSRegistrarABI is the input ABI used to generate the binding from.
+const FIFSRegistrarABI = `[{"constant":false,"inputs":[{"name":"subnode","type":"bytes32"},{"name":"owner","type":"address"}],"name":"register","outputs":[],"type":"function"},{"inputs":[{"name":"ensAddr","type":"address"},{"name":"node","type":"bytes32"}],"type":"constructor"}]`
+
+// FIFSRegistrarBin is the compiled bytecode used for deploying new contracts.
+const FIFSRegistrarBin = `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`
+
+// DeployFIFSRegistrar deploys a new Ethereum contract, binding an instance of FIFSRegistrar to it.
+func DeployFIFSRegistrar(auth *bind.TransactOpts, backend bind.ContractBackend, ensAddr common.Address, node [32]byte) (common.Address, *types.Transaction, *FIFSRegistrar, error) {
+	parsed, err := abi.JSON(strings.NewReader(FIFSRegistrarABI))
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(FIFSRegistrarBin), backend, ensAddr, node)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &FIFSRegistrar{FIFSRegistrarCaller: FIFSRegistrarCaller{contract: contract}, FIFSRegistrarTransactor: FIFSRegistrarTransactor{contract: contract}}, nil
+}
+
+// FIFSRegistrar is an auto generated Go binding around an Ethereum contract.
+type FIFSRegistrar struct {
+	FIFSRegistrarCaller     // Read-only binding to the contract
+	FIFSRegistrarTransactor // Write-only binding to the contract
+}
+
+// FIFSRegistrarCaller is an auto generated read-only Go binding around an Ethereum contract.
+type FIFSRegistrarCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FIFSRegistrarTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type FIFSRegistrarTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FIFSRegistrarSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type FIFSRegistrarSession struct {
+	Contract     *FIFSRegistrar    // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// FIFSRegistrarCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type FIFSRegistrarCallerSession struct {
+	Contract *FIFSRegistrarCaller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts        // Call options to use throughout this session
+}
+
+// FIFSRegistrarTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type FIFSRegistrarTransactorSession struct {
+	Contract     *FIFSRegistrarTransactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts        // Transaction auth options to use throughout this session
+}
+
+// FIFSRegistrarRaw is an auto generated low-level Go binding around an Ethereum contract.
+type FIFSRegistrarRaw struct {
+	Contract *FIFSRegistrar // Generic contract binding to access the raw methods on
+}
+
+// FIFSRegistrarCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type FIFSRegistrarCallerRaw struct {
+	Contract *FIFSRegistrarCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// FIFSRegistrarTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type FIFSRegistrarTransactorRaw struct {
+	Contract *FIFSRegistrarTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewFIFSRegistrar creates a new instance of FIFSRegistrar, bound to a specific deployed contract.
+func NewFIFSRegistrar(address common.Address, backend bind.ContractBackend) (*FIFSRegistrar, error) {
+	contract, err := bindFIFSRegistrar(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor))
+	if err != nil {
+		return nil, err
+	}
+	return &FIFSRegistrar{FIFSRegistrarCaller: FIFSRegistrarCaller{contract: contract}, FIFSRegistrarTransactor: FIFSRegistrarTransactor{contract: contract}}, nil
+}
+
+// NewFIFSRegistrarCaller creates a new read-only instance of FIFSRegistrar, bound to a specific deployed contract.
+func NewFIFSRegistrarCaller(address common.Address, caller bind.ContractCaller) (*FIFSRegistrarCaller, error) {
+	contract, err := bindFIFSRegistrar(address, caller, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FIFSRegistrarCaller{contract: contract}, nil
+}
+
+// NewFIFSRegistrarTransactor creates a new write-only instance of FIFSRegistrar, bound to a specific deployed contract.
+func NewFIFSRegistrarTransactor(address common.Address, transactor bind.ContractTransactor) (*FIFSRegistrarTransactor, error) {
+	contract, err := bindFIFSRegistrar(address, nil, transactor)
+	if err != nil {
+		return nil, err
+	}
+	return &FIFSRegistrarTransactor{contract: contract}, nil
+}
+
+// bindFIFSRegistrar binds a generic wrapper to an already deployed contract.
+func bindFIFSRegistrar(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(FIFSRegistrarABI))
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, parsed, caller, transactor), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FIFSRegistrar *FIFSRegistrarRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _FIFSRegistrar.Contract.FIFSRegistrarCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FIFSRegistrar *FIFSRegistrarRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.FIFSRegistrarTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FIFSRegistrar *FIFSRegistrarRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.FIFSRegistrarTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FIFSRegistrar *FIFSRegistrarCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _FIFSRegistrar.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FIFSRegistrar *FIFSRegistrarTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FIFSRegistrar *FIFSRegistrarTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.contract.Transact(opts, method, params...)
+}
+
+// Register is a paid mutator transaction binding the contract method 0xd22057a9.
+//
+// Solidity: function register(subnode bytes32, owner address) returns()
+func (_FIFSRegistrar *FIFSRegistrarTransactor) Register(opts *bind.TransactOpts, subnode [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _FIFSRegistrar.contract.Transact(opts, "register", subnode, owner)
+}
+
+// Register is a paid mutator transaction binding the contract method 0xd22057a9.
+//
+// Solidity: function register(subnode bytes32, owner address) returns()
+func (_FIFSRegistrar *FIFSRegistrarSession) Register(subnode [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.Register(&_FIFSRegistrar.TransactOpts, subnode, owner)
+}
+
+// Register is a paid mutator transaction binding the contract method 0xd22057a9.
+//
+// Solidity: function register(subnode bytes32, owner address) returns()
+func (_FIFSRegistrar *FIFSRegistrarTransactorSession) Register(subnode [32]byte, owner common.Address) (*types.Transaction, error) {
+	return _FIFSRegistrar.Contract.Register(&_FIFSRegistrar.TransactOpts, subnode, owner)
+}
+
+// PublicResolverABI is the input ABI used to generate the binding from.
+const PublicResolverABI = `[{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"content","outputs":[{"name":"ret","type":"bytes32"}],"type":"function"},{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"addr","outputs":[{"name":"ret","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"kind","type":"bytes32"}],"name":"has","outputs":[{"name":"","type":"bool"}],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"hash","type":"bytes32"}],"name":"setContent","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"addr","type":"address"}],"name":"setAddr","outputs":[],"type":"function"},{"inputs":[{"name":"ensAddr","type":"address"}],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"a","type":"address"}],"name":"AddrChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"hash","type":"bytes32"}],"name":"ContentChanged","type":"event"}]`
+
+// PublicResolverBin is the compiled bytecode used for deploying new contracts.
+const PublicResolverBin = `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`
+
+// DeployPublicResolver deploys a new Ethereum contract, binding an instance of PublicResolver to it.
+func DeployPublicResolver(auth *bind.TransactOpts, backend bind.ContractBackend, ensAddr common.Address) (common.Address, *types.Transaction, *PublicResolver, error) {
+	parsed, err := abi.JSON(strings.NewReader(PublicResolverABI))
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(PublicResolverBin), backend, ensAddr)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &PublicResolver{PublicResolverCaller: PublicResolverCaller{contract: contract}, PublicResolverTransactor: PublicResolverTransactor{contract: contract}}, nil
+}
+
+// PublicResolver is an auto generated Go binding around an Ethereum contract.
+type PublicResolver struct {
+	PublicResolverCaller     // Read-only binding to the contract
+	PublicResolverTransactor // Write-only binding to the contract
+}
+
+// PublicResolverCaller is an auto generated read-only Go binding around an Ethereum contract.
+type PublicResolverCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// PublicResolverTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type PublicResolverTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// PublicResolverSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type PublicResolverSession struct {
+	Contract     *PublicResolver   // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// PublicResolverCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type PublicResolverCallerSession struct {
+	Contract *PublicResolverCaller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts         // Call options to use throughout this session
+}
+
+// PublicResolverTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type PublicResolverTransactorSession struct {
+	Contract     *PublicResolverTransactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts         // Transaction auth options to use throughout this session
+}
+
+// PublicResolverRaw is an auto generated low-level Go binding around an Ethereum contract.
+type PublicResolverRaw struct {
+	Contract *PublicResolver // Generic contract binding to access the raw methods on
+}
+
+// PublicResolverCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type PublicResolverCallerRaw struct {
+	Contract *PublicResolverCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// PublicResolverTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type PublicResolverTransactorRaw struct {
+	Contract *PublicResolverTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewPublicResolver creates a new instance of PublicResolver, bound to a specific deployed contract.
+func NewPublicResolver(address common.Address, backend bind.ContractBackend) (*PublicResolver, error) {
+	contract, err := bindPublicResolver(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor))
+	if err != nil {
+		return nil, err
+	}
+	return &PublicResolver{PublicResolverCaller: PublicResolverCaller{contract: contract}, PublicResolverTransactor: PublicResolverTransactor{contract: contract}}, nil
+}
+
+// NewPublicResolverCaller creates a new read-only instance of PublicResolver, bound to a specific deployed contract.
+func NewPublicResolverCaller(address common.Address, caller bind.ContractCaller) (*PublicResolverCaller, error) {
+	contract, err := bindPublicResolver(address, caller, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &PublicResolverCaller{contract: contract}, nil
+}
+
+// NewPublicResolverTransactor creates a new write-only instance of PublicResolver, bound to a specific deployed contract.
+func NewPublicResolverTransactor(address common.Address, transactor bind.ContractTransactor) (*PublicResolverTransactor, error) {
+	contract, err := bindPublicResolver(address, nil, transactor)
+	if err != nil {
+		return nil, err
+	}
+	return &PublicResolverTransactor{contract: contract}, nil
+}
+
+// bindPublicResolver binds a generic wrapper to an already deployed contract.
+func bindPublicResolver(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(PublicResolverABI))
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, parsed, caller, transactor), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_PublicResolver *PublicResolverRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _PublicResolver.Contract.PublicResolverCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_PublicResolver *PublicResolverRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _PublicResolver.Contract.PublicResolverTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_PublicResolver *PublicResolverRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _PublicResolver.Contract.PublicResolverTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_PublicResolver *PublicResolverCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _PublicResolver.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_PublicResolver *PublicResolverTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _PublicResolver.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_PublicResolver *PublicResolverTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _PublicResolver.Contract.contract.Transact(opts, method, params...)
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_PublicResolver *PublicResolverCaller) Addr(opts *bind.CallOpts, node [32]byte) (common.Address, error) {
+	var (
+		ret0 = new(common.Address)
+	)
+	out := ret0
+	err := _PublicResolver.contract.Call(opts, out, "addr", node)
+	return *ret0, err
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_PublicResolver *PublicResolverSession) Addr(node [32]byte) (common.Address, error) {
+	return _PublicResolver.Contract.Addr(&_PublicResolver.CallOpts, node)
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_PublicResolver *PublicResolverCallerSession) Addr(node [32]byte) (common.Address, error) {
+	return _PublicResolver.Contract.Addr(&_PublicResolver.CallOpts, node)
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_PublicResolver *PublicResolverCaller) Content(opts *bind.CallOpts, node [32]byte) ([32]byte, error) {
+	var (
+		ret0 = new([32]byte)
+	)
+	out := ret0
+	err := _PublicResolver.contract.Call(opts, out, "content", node)
+	return *ret0, err
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_PublicResolver *PublicResolverSession) Content(node [32]byte) ([32]byte, error) {
+	return _PublicResolver.Contract.Content(&_PublicResolver.CallOpts, node)
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_PublicResolver *PublicResolverCallerSession) Content(node [32]byte) ([32]byte, error) {
+	return _PublicResolver.Contract.Content(&_PublicResolver.CallOpts, node)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_PublicResolver *PublicResolverTransactor) Has(opts *bind.TransactOpts, node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.contract.Transact(opts, "has", node, kind)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_PublicResolver *PublicResolverSession) Has(node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.Contract.Has(&_PublicResolver.TransactOpts, node, kind)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_PublicResolver *PublicResolverTransactorSession) Has(node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.Contract.Has(&_PublicResolver.TransactOpts, node, kind)
+}
+
+// SetAddr is a paid mutator transaction binding the contract method 0xd5fa2b00.
+//
+// Solidity: function setAddr(node bytes32, addr address) returns()
+func (_PublicResolver *PublicResolverTransactor) SetAddr(opts *bind.TransactOpts, node [32]byte, addr common.Address) (*types.Transaction, error) {
+	return _PublicResolver.contract.Transact(opts, "setAddr", node, addr)
+}
+
+// SetAddr is a paid mutator transaction binding the contract method 0xd5fa2b00.
+//
+// Solidity: function setAddr(node bytes32, addr address) returns()
+func (_PublicResolver *PublicResolverSession) SetAddr(node [32]byte, addr common.Address) (*types.Transaction, error) {
+	return _PublicResolver.Contract.SetAddr(&_PublicResolver.TransactOpts, node, addr)
+}
+
+// SetAddr is a paid mutator transaction binding the contract method 0xd5fa2b00.
+//
+// Solidity: function setAddr(node bytes32, addr address) returns()
+func (_PublicResolver *PublicResolverTransactorSession) SetAddr(node [32]byte, addr common.Address) (*types.Transaction, error) {
+	return _PublicResolver.Contract.SetAddr(&_PublicResolver.TransactOpts, node, addr)
+}
+
+// SetContent is a paid mutator transaction binding the contract method 0xc3d014d6.
+//
+// Solidity: function setContent(node bytes32, hash bytes32) returns()
+func (_PublicResolver *PublicResolverTransactor) SetContent(opts *bind.TransactOpts, node [32]byte, hash [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.contract.Transact(opts, "setContent", node, hash)
+}
+
+// SetContent is a paid mutator transaction binding the contract method 0xc3d014d6.
+//
+// Solidity: function setContent(node bytes32, hash bytes32) returns()
+func (_PublicResolver *PublicResolverSession) SetContent(node [32]byte, hash [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.Contract.SetContent(&_PublicResolver.TransactOpts, node, hash)
+}
+
+// SetContent is a paid mutator transaction binding the contract method 0xc3d014d6.
+//
+// Solidity: function setContent(node bytes32, hash bytes32) returns()
+func (_PublicResolver *PublicResolverTransactorSession) SetContent(node [32]byte, hash [32]byte) (*types.Transaction, error) {
+	return _PublicResolver.Contract.SetContent(&_PublicResolver.TransactOpts, node, hash)
+}
+
+// ResolverABI is the input ABI used to generate the binding from.
+const ResolverABI = `[{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"content","outputs":[{"name":"ret","type":"bytes32"}],"type":"function"},{"constant":true,"inputs":[{"name":"node","type":"bytes32"}],"name":"addr","outputs":[{"name":"ret","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"node","type":"bytes32"},{"name":"kind","type":"bytes32"}],"name":"has","outputs":[{"name":"","type":"bool"}],"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"a","type":"address"}],"name":"AddrChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"hash","type":"bytes32"}],"name":"ContentChanged","type":"event"}]`
+
+// ResolverBin is the compiled bytecode used for deploying new contracts.
+const ResolverBin = `0x`
+
+// DeployResolver deploys a new Ethereum contract, binding an instance of Resolver to it.
+func DeployResolver(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *Resolver, error) {
+	parsed, err := abi.JSON(strings.NewReader(ResolverABI))
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(ResolverBin), backend)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &Resolver{ResolverCaller: ResolverCaller{contract: contract}, ResolverTransactor: ResolverTransactor{contract: contract}}, nil
+}
+
+// Resolver is an auto generated Go binding around an Ethereum contract.
+type Resolver struct {
+	ResolverCaller     // Read-only binding to the contract
+	ResolverTransactor // Write-only binding to the contract
+}
+
+// ResolverCaller is an auto generated read-only Go binding around an Ethereum contract.
+type ResolverCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ResolverTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type ResolverTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// ResolverSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type ResolverSession struct {
+	Contract     *Resolver         // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// ResolverCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type ResolverCallerSession struct {
+	Contract *ResolverCaller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts   // Call options to use throughout this session
+}
+
+// ResolverTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type ResolverTransactorSession struct {
+	Contract     *ResolverTransactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts   // Transaction auth options to use throughout this session
+}
+
+// ResolverRaw is an auto generated low-level Go binding around an Ethereum contract.
+type ResolverRaw struct {
+	Contract *Resolver // Generic contract binding to access the raw methods on
+}
+
+// ResolverCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type ResolverCallerRaw struct {
+	Contract *ResolverCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// ResolverTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type ResolverTransactorRaw struct {
+	Contract *ResolverTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewResolver creates a new instance of Resolver, bound to a specific deployed contract.
+func NewResolver(address common.Address, backend bind.ContractBackend) (*Resolver, error) {
+	contract, err := bindResolver(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor))
+	if err != nil {
+		return nil, err
+	}
+	return &Resolver{ResolverCaller: ResolverCaller{contract: contract}, ResolverTransactor: ResolverTransactor{contract: contract}}, nil
+}
+
+// NewResolverCaller creates a new read-only instance of Resolver, bound to a specific deployed contract.
+func NewResolverCaller(address common.Address, caller bind.ContractCaller) (*ResolverCaller, error) {
+	contract, err := bindResolver(address, caller, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &ResolverCaller{contract: contract}, nil
+}
+
+// NewResolverTransactor creates a new write-only instance of Resolver, bound to a specific deployed contract.
+func NewResolverTransactor(address common.Address, transactor bind.ContractTransactor) (*ResolverTransactor, error) {
+	contract, err := bindResolver(address, nil, transactor)
+	if err != nil {
+		return nil, err
+	}
+	return &ResolverTransactor{contract: contract}, nil
+}
+
+// bindResolver binds a generic wrapper to an already deployed contract.
+func bindResolver(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(ResolverABI))
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, parsed, caller, transactor), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_Resolver *ResolverRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _Resolver.Contract.ResolverCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_Resolver *ResolverRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _Resolver.Contract.ResolverTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_Resolver *ResolverRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _Resolver.Contract.ResolverTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_Resolver *ResolverCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
+	return _Resolver.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_Resolver *ResolverTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _Resolver.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_Resolver *ResolverTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _Resolver.Contract.contract.Transact(opts, method, params...)
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_Resolver *ResolverCaller) Addr(opts *bind.CallOpts, node [32]byte) (common.Address, error) {
+	var (
+		ret0 = new(common.Address)
+	)
+	out := ret0
+	err := _Resolver.contract.Call(opts, out, "addr", node)
+	return *ret0, err
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_Resolver *ResolverSession) Addr(node [32]byte) (common.Address, error) {
+	return _Resolver.Contract.Addr(&_Resolver.CallOpts, node)
+}
+
+// Addr is a free data retrieval call binding the contract method 0x3b3b57de.
+//
+// Solidity: function addr(node bytes32) constant returns(ret address)
+func (_Resolver *ResolverCallerSession) Addr(node [32]byte) (common.Address, error) {
+	return _Resolver.Contract.Addr(&_Resolver.CallOpts, node)
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_Resolver *ResolverCaller) Content(opts *bind.CallOpts, node [32]byte) ([32]byte, error) {
+	var (
+		ret0 = new([32]byte)
+	)
+	out := ret0
+	err := _Resolver.contract.Call(opts, out, "content", node)
+	return *ret0, err
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_Resolver *ResolverSession) Content(node [32]byte) ([32]byte, error) {
+	return _Resolver.Contract.Content(&_Resolver.CallOpts, node)
+}
+
+// Content is a free data retrieval call binding the contract method 0x2dff6941.
+//
+// Solidity: function content(node bytes32) constant returns(ret bytes32)
+func (_Resolver *ResolverCallerSession) Content(node [32]byte) ([32]byte, error) {
+	return _Resolver.Contract.Content(&_Resolver.CallOpts, node)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_Resolver *ResolverTransactor) Has(opts *bind.TransactOpts, node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _Resolver.contract.Transact(opts, "has", node, kind)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_Resolver *ResolverSession) Has(node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _Resolver.Contract.Has(&_Resolver.TransactOpts, node, kind)
+}
+
+// Has is a paid mutator transaction binding the contract method 0x41b9dc2b.
+//
+// Solidity: function has(node bytes32, kind bytes32) returns(bool)
+func (_Resolver *ResolverTransactorSession) Has(node [32]byte, kind [32]byte) (*types.Transaction, error) {
+	return _Resolver.Contract.Has(&_Resolver.TransactOpts, node, kind)
+}
diff --git a/contracts/ens/contract/ens.sol b/contracts/ens/contract/ens.sol
new file mode 100644
index 000000000..2edf32692
--- /dev/null
+++ b/contracts/ens/contract/ens.sol
@@ -0,0 +1,226 @@
+// Ethereum Name Service contracts by Nick Johnson <nick@ethereum.org>
+// 
+// To the extent possible under law, the person who associated CC0 with
+// ENS contracts has waived all copyright and related or neighboring rights
+// to ENS.
+// 
+// You should have received a copy of the CC0 legalcode along with this
+// work.  If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+/**
+ * The ENS registry contract.
+ */
+contract ENS {
+    struct Record {
+        address owner;
+        address resolver;
+    }
+    
+    mapping(bytes32=>Record) records;
+    
+    // Logged when the owner of a node assigns a new owner to a subnode.
+    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);
+
+    // Logged when the owner of a node transfers ownership to a new account.
+    event Transfer(bytes32 indexed node, address owner);
+
+    // Logged when the owner of a node changes the resolver for that node.
+    event NewResolver(bytes32 indexed node, address resolver);
+    
+    // Permits modifications only by the owner of the specified node.
+    modifier only_owner(bytes32 node) {
+        if(records[node].owner != msg.sender) throw;
+        _
+    }
+    
+    /**
+     * Constructs a new ENS registrar, with the provided address as the owner of the root node.
+     */
+    function ENS(address owner) {
+        records[0].owner = owner;
+    }
+    
+    /**
+     * Returns the address that owns the specified node.
+     */
+    function owner(bytes32 node) constant returns (address) {
+        return records[node].owner;
+    }
+    
+    /**
+     * Returns the address of the resolver for the specified node.
+     */
+    function resolver(bytes32 node) constant returns (address) {
+        return records[node].resolver;
+    }
+
+    /**
+     * Transfers ownership of a node to a new address. May only be called by the current
+     * owner of the node.
+     * @param node The node to transfer ownership of.
+     * @param owner The address of the new owner.
+     */
+    function setOwner(bytes32 node, address owner) only_owner(node) {
+        Transfer(node, owner);
+        records[node].owner = owner;
+    }
+
+    /**
+     * Transfers ownership of a subnode sha3(node, label) to a new address. May only be
+     * called by the owner of the parent node.
+     * @param node The parent node.
+     * @param label The hash of the label specifying the subnode.
+     * @param owner The address of the new owner.
+     */
+    function setOwner(bytes32 node, bytes32 label, address owner) only_owner(node) {
+        var subnode = sha3(node, label);
+        NewOwner(node, label, owner);
+        records[subnode].owner = owner;
+    }
+
+    /**
+     * Sets the resolver address for the specified node.
+     * @param node The node to update.
+     * @param resolver The address of the resolver.
+     */
+    function setResolver(bytes32 node, address resolver) only_owner(node) {
+        NewResolver(node, resolver);
+        records[node].resolver = resolver;
+    }
+}
+
+/**
+ * A registrar that allocates subdomains to the first person to claim them. It also deploys
+ * a simple resolver contract and sets that as the default resolver on new names for
+ * convenience.
+ */
+contract FIFSRegistrar {
+    ENS ens;
+    PublicResolver defaultResolver;
+    bytes32 rootNode;
+    
+    /**
+     * Constructor.
+     * @param ensAddr The address of the ENS registry.
+     * @param node The node that this registrar administers.
+     */
+    function FIFSRegistrar(address ensAddr, bytes32 node) {
+        ens = ENS(ensAddr);
+        defaultResolver = new PublicResolver(ensAddr);
+        rootNode = node;
+    }
+
+    /**
+     * Register a name, or change the owner of an existing registration.
+     * @param subnode The hash of the label to register.
+     * @param owner The address of the new owner.
+     */    
+    function register(bytes32 subnode, address owner) {
+        var node = sha3(rootNode, subnode);
+        var currentOwner = ens.owner(node);
+        if(currentOwner != 0 && currentOwner != msg.sender)
+            throw;
+
+        // Temporarily set ourselves as the owner
+        ens.setOwner(rootNode, subnode, this);
+        // Set up the default resolver
+        ens.setResolver(node, defaultResolver);
+        // Set the owner to the real owner
+        ens.setOwner(node, owner);
+    }
+}
+
+contract Resolver {
+    event AddrChanged(bytes32 indexed node, address a);
+    event ContentChanged(bytes32 indexed node, bytes32 hash);
+
+    function has(bytes32 node, bytes32 kind) returns (bool);
+    function addr(bytes32 node) constant returns (address ret);
+    function content(bytes32 node) constant returns (bytes32 ret);
+}
+
+/**
+ * A simple resolver anyone can use; only allows the owner of a node to set its
+ * address.
+ */
+contract PublicResolver is Resolver {
+    ENS ens;
+    mapping(bytes32=>address) addresses;
+    mapping(bytes32=>bytes32) contents;
+    
+    modifier only_owner(bytes32 node) {
+        if(ens.owner(node) != msg.sender) throw;
+        _
+    }
+
+    /**
+     * Constructor.
+     * @param ensAddr The ENS registrar contract.
+     */
+    function PublicResolver(address ensAddr) {
+        ens = ENS(ensAddr);
+    }
+
+    /**
+     * Fallback function.
+     */
+    function() {
+        throw;
+    }
+
+    /**
+     * Returns true if the specified node has the specified record type.
+     * @param node The ENS node to query.
+     * @param kind The record type name, as specified in EIP137.
+     * @return True if this resolver has a record of the provided type on the
+     *         provided node.
+     */
+    function has(bytes32 node, bytes32 kind) returns (bool) {
+        return (kind == "addr" && addresses[node] != 0) ||
+               (kind == "content" && contents[node] != 0);
+    }
+    
+    /**
+     * Returns the address associated with an ENS node.
+     * @param node The ENS node to query.
+     * @return The associated address.
+     */
+    function addr(bytes32 node) constant returns (address ret) {
+        ret = addresses[node];
+        if(ret == 0)
+            throw;
+    }
+    
+    /**
+     * Returns the content hash associated with an ENS node.
+     * @param node The ENS node to query.
+     * @return The associated content hash.
+     */
+    function content(bytes32 node) constant returns (bytes32 ret) {
+        ret = contents[node];
+        if(ret == 0)
+            throw;
+    }
+
+    /**
+     * Sets the address associated with an ENS node.
+     * May only be called by the owner of that node in the ENS registry.
+     * @param node The node to update.
+     * @param addr The address to set.
+     */
+    function setAddr(bytes32 node, address addr) only_owner(node) {
+        addresses[node] = addr;
+        AddrChanged(node, addr);
+    }
+    
+    /**
+     * Sets the content hash associated with an ENS node.
+     * May only be called by the owner of that node in the ENS registry.
+     * @param node The node to update.
+     * @param hash The content hash to set.
+     */
+    function setContent(bytes32 node, bytes32 hash) only_owner(node) {
+        contents[node] = hash;
+        ContentChanged(node, hash);
+    }
+}
diff --git a/contracts/ens/ens.go b/contracts/ens/ens.go
new file mode 100644
index 000000000..59147e183
--- /dev/null
+++ b/contracts/ens/ens.go
@@ -0,0 +1,178 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum library 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 the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package ens
+
+//go:generate abigen --sol contract/ens.sol --pkg contract --out contract/ens.go
+
+import (
+	"math/big"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/contracts/ens/contract"
+)
+
+// swarm domain name registry and resolver
+type ENS struct {
+	*contract.ENSSession
+	contractBackend bind.ContractBackend
+}
+
+// NewENS creates a struct exposing convenient high-level operations for interacting with
+// the Ethereum Name Service.
+func NewENS(transactOpts *bind.TransactOpts, contractAddr common.Address, contractBackend bind.ContractBackend) (*ENS, error) {
+	ens, err := contract.NewENS(contractAddr, contractBackend)
+	if err != nil {
+		return nil, err
+	}
+
+	return &ENS{
+		&contract.ENSSession{
+			Contract:     ens,
+			TransactOpts: *transactOpts,
+		},
+		contractBackend,
+	}, nil
+}
+
+// DeployENS deploys an instance of the ENS nameservice, with a 'first in first served' root registrar.
+func DeployENS(transactOpts *bind.TransactOpts, contractBackend bind.ContractBackend) (*ENS, error) {
+	// Deploy the ENS registry
+	ensAddr, _, _, err := contract.DeployENS(transactOpts, contractBackend, transactOpts.From)
+	if err != nil {
+		return nil, err
+	}
+
+	ens, err := NewENS(transactOpts, ensAddr, contractBackend)
+	if err != nil {
+		return nil, err
+	}
+
+	// Deploy the registrar
+	regAddr, _, _, err := contract.DeployFIFSRegistrar(transactOpts, contractBackend, ensAddr, [32]byte{})
+	if err != nil {
+		return nil, err
+	}
+
+	// Set the registrar as owner of the ENS root
+	_, err = ens.SetOwner([32]byte{}, regAddr)
+	if err != nil {
+		return nil, err
+	}
+
+	return ens, nil
+}
+
+func ensParentNode(name string) (common.Hash, common.Hash) {
+	parts := strings.SplitN(name, ".", 2)
+	label := crypto.Keccak256Hash([]byte(parts[0]))
+	if len(parts) == 1 {
+		return [32]byte{}, label
+	} else {
+		parentNode, parentLabel := ensParentNode(parts[1])
+		return crypto.Keccak256Hash(parentNode[:], parentLabel[:]), label
+	}
+}
+
+func ensNode(name string) common.Hash {
+	parentNode, parentLabel := ensParentNode(name)
+	return crypto.Keccak256Hash(parentNode[:], parentLabel[:])
+}
+
+func (self *ENS) getResolver(node [32]byte) (*contract.PublicResolverSession, error) {
+	resolverAddr, err := self.Resolver(node)
+	if err != nil {
+		return nil, err
+	}
+
+	resolver, err := contract.NewPublicResolver(resolverAddr, self.contractBackend)
+	if err != nil {
+		return nil, err
+	}
+
+	return &contract.PublicResolverSession{
+		Contract:     resolver,
+		TransactOpts: self.TransactOpts,
+	}, nil
+}
+
+func (self *ENS) getRegistrar(node [32]byte) (*contract.FIFSRegistrarSession, error) {
+	registrarAddr, err := self.Owner(node)
+	if err != nil {
+		return nil, err
+	}
+
+	registrar, err := contract.NewFIFSRegistrar(registrarAddr, self.contractBackend)
+	if err != nil {
+		return nil, err
+	}
+
+	return &contract.FIFSRegistrarSession{
+		Contract:     registrar,
+		TransactOpts: self.TransactOpts,
+	}, nil
+}
+
+// Resolve is a non-transactional call that returns the content hash associated with a name.
+func (self *ENS) Resolve(name string) (common.Hash, error) {
+	node := ensNode(name)
+
+	resolver, err := self.getResolver(node)
+	if err != nil {
+		return common.Hash{}, err
+	}
+
+	ret, err := resolver.Content(node)
+	if err != nil {
+		return common.Hash{}, err
+	}
+
+	return common.BytesToHash(ret[:]), nil
+}
+
+// Register registers a new domain name for the caller, making them the owner of the new name.
+// Only works if the registrar for the parent domain implements the FIFS registrar protocol.
+func (self *ENS) Register(name string) (*types.Transaction, error) {
+	parentNode, label := ensParentNode(name)
+
+	registrar, err := self.getRegistrar(parentNode)
+	if err != nil {
+		return nil, err
+	}
+
+	opts := self.TransactOpts
+	opts.GasLimit = big.NewInt(200000)
+	return registrar.Contract.Register(&opts, label, self.TransactOpts.From)
+}
+
+// SetContentHash sets the content hash associated with a name. Only works if the caller
+// owns the name, and the associated resolver implements a `setContent` function.
+func (self *ENS) SetContentHash(name string, hash common.Hash) (*types.Transaction, error) {
+	node := ensNode(name)
+
+	resolver, err := self.getResolver(node)
+	if err != nil {
+		return nil, err
+	}
+
+	opts := self.TransactOpts
+	opts.GasLimit = big.NewInt(200000)
+	return resolver.Contract.SetContent(&opts, node, hash)
+}
diff --git a/contracts/ens/ens_test.go b/contracts/ens/ens_test.go
new file mode 100644
index 000000000..760966873
--- /dev/null
+++ b/contracts/ens/ens_test.go
@@ -0,0 +1,67 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum library 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 the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package ens
+
+import (
+	"math/big"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+var (
+	key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+	name   = "my name on ENS"
+	hash   = crypto.Sha3Hash([]byte("my content"))
+	addr   = crypto.PubkeyToAddress(key.PublicKey)
+)
+
+func TestENS(t *testing.T) {
+	contractBackend := backends.NewSimulatedBackend(core.GenesisAccount{Address: addr, Balance: big.NewInt(1000000000)})
+	transactOpts := bind.NewKeyedTransactor(key)
+	// Workaround for bug estimating gas in the call to Register
+	transactOpts.GasLimit = big.NewInt(1000000)
+
+	ens, err := DeployENS(transactOpts, contractBackend)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	contractBackend.Commit()
+
+	_, err = ens.Register(name)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	contractBackend.Commit()
+
+	_, err = ens.SetContentHash(name, hash)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	contractBackend.Commit()
+
+	vhost, err := ens.Resolve(name)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if vhost != hash {
+		t.Fatalf("resolve error, expected %v, got %v", hash.Hex(), vhost.Hex())
+	}
+}