Interacting with the sidechain requires sending requests to specific JSON-RPC API methods. The EVM sidechain testnet supports most standard Ethereum JSON-RPC API endpoints with a few exceptions described in the API specification.


The EVM sidechain testnet supports OpenRPC’s rpc.discover service discovery method that will return the OpenRPC scheme for the JSON-RPC API. You can easily validate and preview the schema on the OpenRPC Playground.

If your product requires a method that is not currently implemented, please contact Input Output Global support.

Not implemented yet

  • eth_protocolVersion
  • eth_syncing
  • eth_coinbase
  • eth_feeHistory (This is specific to the London hard fork.)
  • eth_newFilter
  • eth_newBlockFilter
  • eth_newPendingTransactionFilter
  • eth_uninstallFilter
  • eth_getFilterChanges
  • eth_getFilterLogs
  • eth_getLogs
  • eth_mining (There is no โ€œminingโ€ in the Cardano EVM sidechain but it can return if the node is a validator.)
  • eth_sign
  • eth_signTransaction
  • eth_getTransactionByBlockHashAndIndex
  • eth_getTransactionByBlockNumberAndIndex
  • personal_importRawKey

The whole trace/debug module

Irrelevant methods

The following methods are irrelevant for the Cardano EVM sidechain because they are specific to proof of work. They can be implemented to return a fixed value if needed.

  • eth_getUncleCountByBlockHash
  • eth_getUncleCountByBlockNumber
  • eth_getWork
  • eth_submitWork
  • eth_hashrate
  • eth_submitHashrate
  • eth_getUncleByBlockHashAndIndex
  • eth_gasPrice