【以太坊】Ethereum Popular Client: go-ethereum

Architect

Genesis

Difficulty

External Account

Create

List

Balance

Unlock

Mining

Transfer Transaction

Transaction

Field	Type	Description
from	Address	the payer’s external account address
to	Address	the receiver’s external account address
value	ether, wei, dai, szable	money to transfer
nonce	integer	incremental number for a account, to identify each tx created by a account
blockHash	hash256	hash of mined block, 0x000… if not mined yet
blockNumber	integer	sequence number of mined block, 0 if not mined yet
gas	integer	fee = gas * gasPrice, declared only, changes may return to sender if (fee - gasUsed) > 0
gasPrice	ether, wei ,dai, etc	fee = gas * gasPrice
transactionIndex	int	position index in a block

TransactionReceipt

Field	Type	Description
blockHash	hash256	…
blockNumber	int	…
contractAddress	Address	null if in transfer transaction
cumulativeGasUsed	ether	?
from	Address	…
gasUsed	ether	actually used fee
logs	Array of ?	?
root	Hash256	?
to	Address
transactionHash	Hash256	…
transactionIndex	int	…

Contract Creation Transaction

Contract Account

External Account Call A Contract

Contract Calls Another Contract

Virtual Machine

Instructions(OpCodes, Operations) related with operating DB

Solc etc: From High-level script to ByteCodes(OpCodes)

Database

Sorted Table(*.sst, *.ldb)

Operation sequence(*.log)

Mainfest

Current

LOG file

Export and Import

Block ⇒ DB

DB ⇒ Block

$ ./geth export blocks.0-782.chain
$ hexdump -Cv blocks.0-782.chain

Appendix

1. LevelDB
2. leveldb实现解析
3. Bloom Filter
4. Frontier.and.its.followers

Notes

1. Transfer Transaction: directly operate DB by node miner.

2. Transaction to call a contract: indirectly operate DB by VM with predefined VM ByteCode compiled from High-Level script).