diff options
Diffstat (limited to 'ethchain')
| -rw-r--r-- | ethchain/block_chain.go | 20 | ||||
| -rw-r--r-- | ethchain/genesis.go | 6 |
2 files changed, 24 insertions, 2 deletions
diff --git a/ethchain/block_chain.go b/ethchain/block_chain.go index 611735707..3445bbb87 100644 --- a/ethchain/block_chain.go +++ b/ethchain/block_chain.go @@ -208,6 +208,26 @@ func (bc *BlockChain) GenesisBlock() *Block { return bc.genesisBlock } +func (self *BlockChain) GetChainHashesFromHash(hash []byte, max uint64) (chain [][]byte) { + block := self.GetBlock(hash) + if block == nil { + return + } + + // XXX Could be optimised by using a different database which only holds hashes (i.e., linked list) + for i := uint64(0); i < max; i++ { + chain = append(chain, block.Hash()) + + if block.Number.Cmp(ethutil.Big0) <= 0 { + break + } + + block = self.GetBlock(block.PrevHash) + } + + return +} + // Get chain return blocks from hash up to max in RLP format func (bc *BlockChain) GetChainFromHash(hash []byte, max uint64) []interface{} { var chain []interface{} diff --git a/ethchain/genesis.go b/ethchain/genesis.go index 54a3bc766..0ce53a6ee 100644 --- a/ethchain/genesis.go +++ b/ethchain/genesis.go @@ -1,9 +1,10 @@ package ethchain import ( + "math/big" + "github.com/ethereum/eth-go/ethcrypto" "github.com/ethereum/eth-go/ethutil" - "math/big" ) /* @@ -26,7 +27,8 @@ var GenesisHeader = []interface{}{ // tx sha "", // Difficulty - ethutil.BigPow(2, 22), + //ethutil.BigPow(2, 22), + big.NewInt(4096), // Number ethutil.Big0, // Block minimum gas price |