Opera

EVM-compatible chain secured by the Lachesis consensus algorithm.

Opera transaction tracing node

Node with implemented OpenEthereum(Parity) transaction tracing API.

This branch is for a transaction tracing node. It's not recommended to use this branch for an Opera validator.

trace_get
trace_transaction
trace_block
trace_filter

Building opera requires a Go (version 1.15 or later) and a C compiler. Once the dependencies are installed, run:

make opera

The build output is build/opera executable.

It's recommended to launch new node from scratch with CLI option --tracenode as this flag has to be set to use stored transaction traces.

$ opera --genesis /path/to/genesis.g --tracenode

If you want to use tracing for pre-genesis blocks, you'll need to import evm history. You can find instructions here: importing evm history

Then enable JSON-RPC API with option trace (--http.api=eth,web3,net,txpool,ftm,sfc,trace")