Skip to content
You are reading Pantheon development version documentation and some displayed features may not be available in the stable release. You can switch to stable version using the version box at screen bottom.

Predeploying Contracts in the Genesis File

To predeploy contracts when starting Pantheon, specify contract code in the genesis file.

Contract Code in Genesis File

{
  ...
  "alloc": {
      "0x0ffd23af8eebc60b3cfdeed6f814988757237314": {
      "balance": "0x100000000000000000000000000000000000000000000000000",
      "code": "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",
      "storage": {
        "7aa07e0c924147697605046b7c2c32645b7bbfb41e0ac5d0a84ac93cbb759798": "0000000000000000000000000000000000000000000000000000000000000001",
        "cea2b0602db61f92b76ec4402875cc38eedc9fc425cb1b697fc2265d50fc20fb": "0000000000000000000000000000000000000000000000000000000000000001",
      }
    }
  },
  ...
}

The contract code in the genesis file defines:

  • Address
  • Balance
  • Bytecode
  • Key value pairs for contract storage.
Questions or feedback? You can discuss issues and obtain free support on Pantheon Gitter channel.
For paid professional support by PegaSys, contact us at [email protected]