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Felix Lange 2019-11-12 15:49:44 +01:00
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docs/_interface/Private-Network.md
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@ -63,12 +63,14 @@ block, you need to decide on a few initial parameters for your blockchain:
while the blockchain is running requires scheduling a hard fork.
- Initial block gas limit (`gasLimit`). Your choice here impacts how much EVM computation
can happen within a single block. We recommend using the main Ethereum network as a
guideline to find a good amount. The block gas limit can be adjusted after launch using
the `--targetgaslimit` command-line flag.
[guideline to find a good amount](gaslimit-char). The block gas limit can be adjusted
after launch using the `--targetgaslimit` command-line flag.
- Initial allocation of ether (`alloc`). This determines how much ether is available to
the addresses you list in the genesis block. Additional ether can be created through
mining as the chain progresses.
[gaslimit-chart]: https://etherscan.io/chart/gaslimit
#### Clique Example
This is an example of a genesis.json file for a proof-of-authority network. The `config`
@ -87,10 +89,12 @@ geth account new --datadir data
Take note of the Ethereum address printed by this command.
To create the initial extradata for your network, collect the signer addresses and
hex-encode `extradata` as the concatenation of 32 zero bytes, all signer addresses, and 65
further zero bytes. In the example below, `extradata` contains a single initial signer
address, `0x7df9a875a174b3bc565e6424a0050ebc1b2d1d82`.
To create the initial extradata for your network, collect the signer addresses and encode
`extradata` as the concatenation of 32 zero bytes, all signer addresses, and 65 further
zero bytes. In the example below, `extradata` contains a single initial signer address,
`0x7df9a875a174b3bc565e6424a0050ebc1b2d1d82`.
You can use the `period` configuration option to set the target block time of the chain.
```json
{
@ -102,7 +106,7 @@ address, `0x7df9a875a174b3bc565e6424a0050ebc1b2d1d82`.
"eip158Block": 0,
"byzantiumBlock": 0,
"constantinopleBlock": 0,
"petersburgBlock": 0
"petersburgBlock": 0,
"clique": {
"period": 5,
"epoch": 30000