The Ethereum Foundation has introduced EIP-7906, a proposal aimed at mitigating risks associated with blind signing. This mechanism, known as native transaction assertions, allows on-chain code to verify the actual outcomes of a transaction against user-defined rules, automatically reverting operations that violate these parameters.
Technically, EIP-7906 adds three new opcodes to the Ethereum Virtual Machine: TXTRACE, TXDIFF, and EVENTDATACOPY. These instructions enable smart contracts to inspect state changes post-execution. The proposal functions as part of the frame transaction format defined in EIP-8141, specifically introducing a POST_TX frame that operates as a read-only static call.
The initiative is part of the broader Trillion Dollar Security program. Developers have already conducted preliminary tests on a development network. The goal is to integrate these features into the upcoming Hegotá upgrade, which is currently scheduled for deployment in 2027.
While the mechanism shifts security verification to the protocol base layer, its implementation depends on the inclusion of EIP-8141 in the network upgrade. Future development will focus on creating user-friendly interfaces for defining transaction rules and auditing the new opcodes across various Ethereum clients.
