Authyr's second primitive surface. Sibling to verified-customer attestation. The same hash-chained ledger substrate, but the actor at the front is the credentialed professional — physician, attorney, contractor, mechanic, advisor — at the moment of release. Every signature bound to a state license or board certification. Every release a link in a public-verifiable chain.
Across legal, medical, contractor, auto, and financial services, credentialed professionals issue dozens of "release" decisions every week — opinions, sign-offs, safety clearances, suitability attestations. Today those releases live in paper folders, PDFs, or proprietary practice-management systems. None of them are cryptographically anchored. None of them survive an audit without an evidentiary battle.
Professional releases sit in proprietary systems with mutable timestamps and weak audit trails. When a malpractice claim, code dispute, recall investigation, or regulator audit lands two years later, the professional's defense rests on whatever the practice-management vendor's logs happened to capture — and the integrity of those logs depends entirely on trusting the vendor.
Each release is signed at the moment of issuance, bound to the professional's verified credential (state license, board certification), and hash-anchored to the prior release in the same ledger. The chain extends back to a genesis attestation. Any tampering breaks the chain. Third parties (auditors, examiners, opposing counsel) verify the chain independently — they don't have to trust the practice or the platform.
Below is a mock of how the ledger reads when populated. Same hash-chain primitive applied across five service verticals at once — each release signed by a credentialed professional, each one chained back to the previous entry, each one independently verifiable.
| ID | Timestamp | Action / context | Release decision | Signatory | Chain |
|---|---|---|---|---|---|
| apl-00006 | 2026-05-27 19:36:45 UTC |
MED
Pre-procedure verification cosmetic-derm · 2-area injectables · age 47F · consent v3.2 |
RELEASED
procedure cleared for execution
|
Dr. Lia Reyes, MD ABDA #11244 · NPI 1538947726 |
6473fb061682… prev: 39e30324181c… |
| apl-00005 | 2026-05-22 14:08:12 UTC |
LEG
M&A opinion-letter release target: Aristae Holdings · purchase agreement v8 · TX-Sec.13.301 closing |
RELEASED
opinion delivered to closing escrow
|
Marcus Pell, Esq. TX Bar #24081933 · Pell & Avery LLP |
39e30324181c… prev: 79db56a2a451… |
| apl-00004 | 2026-05-19 21:14:03 UTC |
CON
Electrical permit closeout 200A residential service · NEC 2023 · IRC §E3702 · permit COH-244871 |
RELEASED
final inspection passed · permit closed
|
Samuel Riley, M-Elec. TX Master Electrician #112493 · Riley Contracting LLC |
79db56a2a451… prev: c9b621a272d5… |
| apl-00003 | 2026-05-15 11:42:51 UTC |
AUT
Brake-system safety release VIN 1HGCV1F3XLA901… · rotors+pads+ABS bleed · road-test 4.2mi |
RELEASED
vehicle cleared for customer pickup
|
Marco DeSantis ASE Master #M.A1-A9.L1 · 18 yrs |
c9b621a272d5… prev: f93b47d27566… |
| apl-00002 | 2026-05-12 16:55:08 UTC |
FIN
Fiduciary suitability attestation client portfolio rebalance · IRA · 60/40 → 70/30 · risk profile 4 |
RELEASED
trade executed via custodian
|
Priya Anand, CFP® CRD #6814092 · Series 7/65/66 |
f93b47d27566… prev: 5418116dcd40… |
| apl-00001 | 2026-05-09 08:20:11 UTC |
MED
Controlled-substance dispense oxycodone 5mg #20 · post-surgical · DEA 222C · 14-day refill lock |
RELEASED
dispense logged · prescriber + pharmacist co-sign
|
Anjali Mehta, PharmD TX PHM #28471 · DEA AM4791336 |
5418116dcd40… prev: genesis |
Above table is a mock illustration. The signatories, credentials, and timestamps are not real. The chain structure (hash-of-prev-attestation, cryptographic signature, public-verifiability) is the actual product. Founding cohort populates the first real entries.
If anyone modifies an old release — backdates a sign-off, alters a release decision, swaps a signatory — the hash of that entry changes, and every subsequent hash in the chain becomes invalid. Tampering is visible immediately. The integrity check is a single cryptographic verification.
Each block's hash is computed over (release_payload + signature + prev_hash). Any change to a prior block invalidates the chain from that block forward. The most recent hash is the cryptographic fingerprint of the entire ledger history.
A single Authyr Professional Attestation entry binds the release decision to the credentialed professional, to the prior chain link, and to the moment in time. Below is the field-by-field anatomy.
Same primitive across every vertical. The differences are which actions get attested and which credentials anchor the signatures. Below: the actions where Authyr Professional Attestation produces immediate audit-defense and regulator-compatible value.
Outpatient cosmetic, dermatology, plastic surgery, infusion, urgent care, dental, veterinary. Anywhere a credentialed clinician signs off on a clinical release decision.
Personal injury, family, estate, immigration, M&A. Whenever an attorney signs off on a release that affects a client or counterparty.
Electrical, plumbing, roofing, fire-suppression, HVAC. Anywhere a licensed trade closes out a permit-required system.
Repair shops, body shops, dealer service departments, mobile mechanics. Every release that affects a safety-critical vehicle system.
RIAs, fee-only advisors, CPAs, insurance brokers, mortgage brokers. Releases that affect client allocations, suitability, or regulatory disclosure.
Any licensed officer making periodic release decisions — chief compliance officer, designated safety officer, qualified individual.
The Professional Attestation Ledger isn't a marketing feature. It's audit-trail infrastructure. Below: what becomes possible the moment your verified releases are hash-chained.
State boards, professional licensure examiners, regulators — all want chronological evidence. The chain provides it without your IT department fielding subpoenas.
"Was the time-out attestation performed?" stops being a memory question. The signed, timestamped, chain-anchored release is the evidence — no proprietary log to subpoena.
Recalls and manufacturer-defect claims live or die on whether the release was performed correctly. The chain produces decade-long evidence of every release decision.
When a professional moves practices, their signed releases travel with them as portable verifiable evidence of competence — independent of any one employer's record-keeping.
FDA, SEC, FINRA, AHJ inspectors, AAPM auditors all increasingly accept (and increasingly require) cryptographically anchored audit trails. Authyr meets that bar by default.
Counterparties — insurers, opposing counsel, escrow agents, regulators — verify chain integrity without going through your office. They run the verification themselves.
The professional doesn't change their workflow. Authyr captures the release event from inside the practice-management system (Clio, Dentrix, Athena, ServiceTitan, Wealthbox, etc.), runs the signing flow in the background, and posts the resulting entry to the chain.
Practice-management system signals a release event. Authyr ingests the action payload + context.
Signatory's state license / board cert / NPI / CRD / ASE number checked against issuing authority at signing time.
SHA-256 over the full release record (consent, notes, scope, parameters). Payload stored encrypted, only the hash is public.
ed25519 signature bound to the credential, anchored to prev-hash. The signing key never leaves the credential's hardware root of trust.
New entry appended to the public-verifiable ledger. Chain pointer advances. Verify URL goes live within seconds.
The hash-chained release-attestation architecture is the subject of a deliberately-broad patent filing. The parent claim is generic enough to cover the customer-attestation ledger (Authyr's other surface) and the professional-attestation ledger (this surface) under the same filing.
The Frequentor LLC patent series includes a deliberately-broad parent claim covering hash-chained per-action attestations bound to signed release contexts. The same filing protects the customer-attestation ledger (verified-customer reviews + 30-day mitigation window) and the professional-attestation ledger described on this page. Specializations are claimed as continuations.
The ledger is evidentiary infrastructure. It is not clinical judgment, legal advice, engineering signoff, or fiduciary discretion. Every entry on the chain is signed by a real credentialed human exercising real professional judgment. We make that judgment durable, verifiable, and portable — we do not replace it.
The Professional Attestation Ledger ships on Firm tier and as an add-on for Practice tier. Founding cohort gets it included.
Apply for the Founding cohort → Read the whitepaper