Private Development Chain - Wiki Parity Tech Documentation

Parity Ethereum supports a dev mode that is particularly useful for Dapp development and demos. Thanks to its Instant seal consensus engine, transactions are “mined” instantly. No need to wait for the next block.

Run a development chain using:

parity --config dev

An address containing a lot of Ether (0x00a329c0648769a73afac7f9381e08fb43dbea72) will be automatically added after startup with it’s password being an empty string. The private key for this address is 0x4d5db4107d237df6a3d58ee5f70ae63d73d7658d4026f2eefd2f204c81682cb7, which you’ll need for signing transactions externally, especially after account management has been split/removed.

Customizing the development chain

The default configuration should work fine in most cases. However, it can be customised. You can see the chain specification for the dev network in the source repository. You can make a copy locally, modify it and pass it to the --chain option. The last section of the file under accounts can be modified to add more accounts with lots of Ether. See the Chain specification documentation for more details.

To make multiple transactions confirm at the same time use --reseal-min-period 0 and to make transactions free use --gasprice 0.

Vagrant

There is a Vagrant Box that creates and starts a preconfigured Parity Ethereum node running this chain, in case you are looking for a minimal configuration setup.