param-upgrade.json

{
    "title": "Change evm chain params",
    "description": "Change evm chain params",
    "changes": [
        {
            "subspace": "gravityv2",
            "key": "EvmChainParams",
            "value": [
                {
                    "gravity_id": "defaultgravityid",
                    "bridge_active": true,
                    "contract_source_hash": "",
                    "bridge_ethereum_address": "0x0000000000000000000000000000000000000000",
                    "bridge_chain_id": "0",
                    "average_ethereum_block_time": "15000",
                    "ethereum_blacklist": [],
                    "evm_chain_prefix": "oraib"
                },
                {
                    "gravity_id": "xyzid",
                    "bridge_active": true,
                    "contract_source_hash": "",
                    "bridge_ethereum_address": "0x0000000000000000000000000000000000000000",
                    "bridge_chain_id": "421",
                    "average_ethereum_block_time": "15000",
                    "ethereum_blacklist": [],
                    "evm_chain_prefix": "foobar"
                }
            ]
        }
    ],
    "deposit": "10000000uoraib"
}