Replayable Audit Trails · Portable Audit Evidence.
Portable Audit Evidence is an audit-period-bounded evidence artifact — a self-contained bundle an auditor can replay and independently verify offline, without contacting H33, the firm, or any cloud tenant. Most audit trails are logs: append-only records that depend on the originating system to interpret them. Portable Audit Evidence is different — it is the substrate-reuse pattern applied to the auditor consumer class: the same enterprise bundle, the same Portability Verifier, the same independently verifiable post-quantum signatures, bounded by an audit period and exchanged with an auditor as a transportable artifact.
This is an Attestation & Receipts expression of H33-74, which produces the portable 74-byte post-quantum evidence primitive. It does not render the verdict (Verification), monitor controls (HATS), or govern the agent (Agent-008).
"What is Portable Audit Evidence in one sentence?"
An audit-period-bounded slice of the same portable substrate carriers and regulators already use, transmitted to the auditor as a self-contained artifact. The auditor verifies the period independently. The artifact survives the firm, the cloud, and the auditor.
The substrate-reuse argument
H33 has now proved two independent consumer loops on the same portability substrate: Portable Attestation (the carrier pattern) and Portable Regulatory Submission (the regulator pattern). Both reach an identical verdict — verifiable without contacting H33. Both compose the same primitives. Both use the same H33 Portability Verifier.
The Auditor Loop is the next planned consumer surface. It adds audit-period bounding, materiality threshold signaling, and workpaper-reference fields to the scope manifest — and does so without inventing a new substrate primitive. Three completed loops on the same substrate is the strongest platform argument a portability infrastructure can make.
Why this beats "another audit trail product"
Conventional audit trails are vendor-bound. Cancel the SaaS contract; sunset the API; lose access to the cloud tenant — and the trail goes dark. Auditors learn to treat them as testimony, not evidence.
Portable Audit Evidence is structurally different. The bundle replays offline. The Portability Verifier is open-source. The post-quantum signatures verify forever. The auditor's work product survives the firm, the cloud, and even the auditing firm itself. That is what makes it evidence rather than testimony — and what makes it the right substrate for the "no H33 contact required" discipline the audit profession increasingly demands.
Why this exists
Auditors are increasingly asked to stand behind evidence that outlives the systems that produced it. A log that goes dark when a SaaS contract ends is testimony, not evidence. Portable Audit Evidence exists so an auditor's work product survives the firm, the cloud, and even the auditing firm itself — a period of decisions the auditor can re-verify from the artifact alone, indefinitely.
When to use it — and when not to
Use Portable Audit Evidence when an auditor needs a period-bounded slice of decisions they can replay and verify independently, offline, with no dependency on the firm's live infrastructure — evidence that must survive vendor changes and time.
Do not reach for it when you want the audit opinion or a compliance verdict — Portable Audit Evidence produces the evidence, not the conclusion. It renders no verdict (that is Verification), monitors nothing continuously (that is HATS), and makes no governance decision over the AI agent (that is Agent-008). The auditor's professional judgment on that evidence is always the auditor's.
The five questions this page answers
Frequently asked questions
Is Portable Audit Evidence an audit opinion?
No. It is portable evidence — the artifact an auditor examines, not the conclusion the auditor reaches. H33-74 produces the evidence; the audit opinion is the auditor's professional judgment. Verification renders the independent replay verdict that the evidence is intact and reproduces its canonical state, but the materiality and compliance conclusions remain the auditor's.
How does the auditor verify it independently?
The auditor downloads the period-bounded bundle and the open-source Portability Verifier and runs the replay locally. The verifier re-checks the post-quantum signatures and confirms the bundle replays to its canonical state, offline, against the published schema. No call to H33, the firm, or any third-party vendor is required. The underlying cryptography (post-quantum signatures, SHA3, JCS canonicalization) are external standards the substrate uses, not H33 inventions.
How is this different from HATS monitoring or Agent-008 governance?
Portable Audit Evidence is a produced artifact, bounded to a period and handed to an auditor. HATS records and monitors controls continuously over time — a live posture, not a portable slice. Agent-008 governs the AI agent decisions that end up in the bundle. This page owns only the portable evidence artifact H33-74 produces; the verdict on it belongs to Verification.