EIP-8197
Cryptographically Agile Transactions
Cryptographically Agile Transaction format separating signature from transaction body
DraftSplurge
Status history
- Draft4 Mar 2025
Abstract
CATX (Cryptographically Agile Transactions) is an EIP-2718 transaction format that separates the transaction body from its signatures using a flat structure: [payload_type, payload_body, (sig_type, sig_body)+]. This enables future migration to post-quantum cryptography without modifying transaction semantics, supports multi-signature payloads resistant to key substitution attacks using chained…