There isn't a widely known standard exactly like DMARC for validating transaction addresses in the context you described, but there are some related concepts and proposals in the blockchain and cryptocurrency space that attempt to address similar issues.This is an account abstraction proposal that avoids protocol changes while maintaining compatibility with existing smart contract wallets. It introduces the concept of endorser contracts to determine the quality of submitted AA transactions, helping bundlers decide if a transaction should be kept in the mempool. This can be seen as a step towards ensuring the integrity of transactions and, by extension, the addresses involved, but it's not a direct equivalent to DMARC.
Other Considerations