legacyeth

Overview ¶

Package legacyeth restores the ability to read Ethereum transactions that were written before the v1.6.0 migration.

Those transactions carry the type URL /cosmos.evm.vm.v1.MsgEthereumTx, which is still current, but the message body uses the pre-refactor field layout:

old MsgEthereumTx                 new MsgEthereumTx
  1 Any    data (TxData)            5 bytes      from
  2 double size (deprecated)        6 EthereumTx raw
  3 string hash
  4 string deprecated_from
  5 bytes  from

The SDK decoder resolves the type and then rejects field 1 as unknown, so the transaction is silently dropped from every read path that decodes it: eth_getBlockByNumber returns an empty transactions array, eth_getTransactionByHash returns null, and the derived roots and bloom are computed as if the block were empty — while eth_getLogs, which reads the event index and needs no decoding, still returns the logs. The result is a block that reports gas used by zero transactions, which no indexer can reconcile.

This package rewrites such a message into the current layout before handing it back to the standard decoder. It is a read-path shim: consensus never decodes these bytes again, and the rewritten form is only ever produced in memory.