← INDEX/WORK/AUTHYR
№ 04 — CRYPTOGRAPHIC TRUST RAILS
Neutral evidence for every dispute — receipts that can’t be rewritten.
THESIS
Every dispute forum — BBB, chargebacks, small claims, licensing boards — adjudicates without neutral evidence. Authyr is that evidence: a portable, independently verifiable, cryptographically signed receipt that a real customer interaction happened, plus a 30-day pre-publish mitigation window that gives businesses a chance to fix things before a review goes public. Affirmation, not censorship.
The design is deliberately patent-aware: engineered around GPS-location prior art (Chen US 9,842,340) with a multi-signal, non-GPS verification stack — and its own provisional patent filed at the USPTO (App # 64/069,215).
THE BUILD
Each business gets a chain where every entry hashes canonical({payload, prevHash, publicKeyId}) from a genesis hash. Mutate any past attestation and every later link breaks. Third parties verify fully offline against published .well-known keys.
Key IDs encode rotation years and every signed envelope stamps its hash algorithm, so keys and hashes (SHA-256 → SHA-3) can migrate with zero chain rewrites. Distinct envelope types prevent cross-replay between attestations, articles, and reviews.
A 1★ complaint that becomes a 5★ recovery is provable end-to-end as two chained review entries — “submitted” then “sealed.” The mitigation window is enforced server-side by a scheduled expiry Lambda, not by promises.
Six DynamoDB tables, Cognito custom-auth magic links (three challenge Lambdas), SES email, owner-scoped authorization with server-side IAM writers for webhooks, and Stripe Connect — where payment itself becomes a verification signal.
A pure, unit-testable prompt builder under hard rules: never posts, never invents facts, never leaks PII — it cites the verifiable receipt URL instead of arguing with anyone.
A trust-score engine ingesting Texas TDLR license data with §230-aware public/private field separation — so day-one pages are useful without a single signup.
SCREENS
SIGNALS
STACK
WHAT IT PROVES
Applied cryptography in a shipping product — not a toy chain, but one with rotation, algorithm agility, replay protection, and offline verification. Plus the founder layer: prior-art navigation, patent posture, and §230-aware data design.