How the seal works

Every artifact this practice produces is sealed into a tamper-evident hash chain. Not a promise — a re-derivation anyone can run.

Three steps, no trust required

1 · The bytes are hashed

The working paper's exact bytes — including the not-advice marker — get a sha256 fingerprint. Change one character (crop the marker, edit a number) and the fingerprint changes.

2 · The hash is chained

Each event seals over the previous one's hash: reorder, insert, or alter anything and every later link breaks. The chain lives on the governance trunk, not on this site.

3 · Anyone re-derives

Verification is a public GET: the conductor recomputes every hash fresh, on demand. Your reviewer or a regulator does not ask us if the record is intact — they ask the math.

Re-derive one now

Chain on deck: 00mraaqltl-0eff0eb7751698ad (this site's own build engagement — the Agency was hired to build this demo through the same governed path)

INFORMATIONAL ONLY — NOT TAX, ACCOUNTING, OR LEGAL ADVICE. DEMO of a fictional practice (SD-052): SIM corpus, simulated work-product, no professional attestation. interaction_class: informational. A real engagement graduates to a licensed CPA's review.