CAIN-42 invariant · E29

E29-P49: the payment's identity envelope was bound to the transaction request

Held · CAIN-42 Evolution 29 -- Governed Agentic Internet Transaction Fabric

Last reviewed 2026-10-01

held   niche Benchmarks, coverage & performance · family property

What this rule means

CAIN-42 must always satisfy: the payment's identity envelope was bound to the transaction request. It is one of 106 invariants checked for CAIN-42 Evolution 29 -- Governed Agentic Internet Transaction Fabric. An invariant is a rule the system may never break, whatever an agent or attacker does; the test suite tries to break it across many scenarios and records the result.

Recorded detail

ok

Verify it in your browser

Your browser downloads the bundle's SHA256SUMS manifest and the file(s) behind this page, hashes them with SHA-256 locally (WebCrypto), and compares. A match shows the record you are reading is the published one; it does not by itself prove who published it (see the signed claims registry and the bundle verifier for that).

Check it yourself

Browse the raw bundle · How to reproduce it · SHA-256 manifest

Related rules

• E29-P01: the end-to-end procurement transaction completes every acceptance step
• E29-P02: every ledger TRANSFER is backed by an ALLOW receipt that reached E8 for the same transaction
• E29-P03: the ledger is hash-chained, signed and conserves value
• E29-P04: the stage records of the transaction verify as a signed hash chain
• E29-P05: the transaction envelope is issued at AUTHORIZE and re-issued at RECORD with the evidence root
• E29-P06: discovery never reports trust
• E29-P07: counterparty risk has thirteen dimensions and no score
• E29-P08: reputation has thirteen dimensions and no aggregate

← E29-P48 · all 106 · E29-P50 →