Post-quantum cryptography makes the proof heavier. H33-74 keeps the proof — and makes it portable. The complete, independently verifiable evidence stays intact; H33-74 is the compact cryptographic commitment to it, not a substitute for it.
Post-quantum signatures are far larger than the classical signatures they replace — and high-assurance systems don’t stop at one signature. A single governed event accumulates authority, key-use, the exact executable identity that produced it, identity and device evidence, temporal proof, and lineage — each of them post-quantum attested. A complete, independently verifiable evidence bundle for one event runs to tens of kilobytes.
At post-quantum scale, carrying that heavyweight proof through every API response, event stream, audit record, blockchain anchor, agent interaction, and transaction becomes an infrastructure problem in its own right. A billion governed events means terabytes of proof in motion — before retention, replication, or verification. That is the post-quantum scale problem.
The heavyweight post-quantum evidence remains intact — preserved once in the evidence architecture, and independently retrievable and replayable from it. H33-74 carries the compact cryptographic commitment that lets systems refer to and verify that evidence without transporting the entire proof everywhere. Proof preservation is separated from proof representation.
Full PQ signatures · authority · BIND provenance · identity evidence · PQ-Time · Evolve lineage.
The full evidence remains — content-addressed, independently retrievable and replayable. It is stored once; it does not travel.
Per the H33-74 specification: a 32-byte anchor plus a 42-byte governed binding, attested by three post-quantum keys. A single H33-74 object commits to the evidence’s identity — it does not carry the evidence itself; it lets a verifier retrieve and check it.
APIs · authentication · agents · audit · compliance · transactions · blockchains — each carries the small commitment, not the whole proof.
In a controlled experiment against a real database and real post-quantum signatures, an independent verifier — given only the evidence root — recovered and re-verified every coordinate of one authorization’s evidence, fetched the content-addressed evidence, and verified the underlying signature. Tampering with the service identity, the evidence kind, the evidence graph, the temporal state, or crossing evidence between two decisions each failed closed.
The portable H33-74 form is a 32-byte anchor plus a 42-byte binding — 74 bytes by specification. We report what the experiment established: that a compact root determines and recovers the evidence, fail-closed. We do not claim to have measured a serialized 74-byte wire object, and we do not yet claim closure for every possible evidence graph. Security — not branding — determines the minimum portable representation. If the honest floor turns out to be larger, that is the number we will publish.
H33-74 doesn’t replace the rest of H33 — it commits to the evidence the rest of H33 produces. Each component answers exactly one question about a governed event; H33-74 answers only the last.
| Component | The one question it answers |
|---|---|
| H33-Key | Was the cryptographic key authorized for this use? |
| H33-BIND | What exact executable implementation produced it? |
| H33-PQ-Time | When, and in what causal lineage, did it occur? |
| H33-Evolve | How did this state legitimately succeed the previous one? |
| H33-74 | What compact cryptographic commitment binds the resulting evidence? |
H33-74 is the portable, post-quantum-attested commitment to heavyweight governed evidence — while the complete proof stays intact behind it.
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