1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d735a7bb9e5d2d39517112d6854049152da2bcdd536b571a520cc1f2ceb9ef7. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74395e74-7c48-4ea1-9e30-8e04d7ad043e.json and https://artists.proofprofile.net/proofs/artist/74395e74-7c48-4ea1-9e30-8e04d7ad043e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d8c71196c390516df80468748ecb9d04f8472c8aa544a5590e0cb7d986814. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US66W2400580.
Much Ado About Nothing (English Version)
La Fierecilla Domada (Versión en Español)
Pericles, Prince of Tyre (English Version)
Enrique VI, Parte 1 (Versión en Español)
The Merry Wives of Windsor (English Version)
La Comedia de las Equivocaciones (Versión en Español)
Todo Bien Si Acaba Bien (Versión en Español)
Enrique IV, Parte 1 (Versión en Español)
Trabajos de Amor Perdidos (Versión en Español)
The Two Gentlemen of Verona (English Version)
The Taming of the Shrew (English Version)
The Merchant of Venice (English Version)
Pericles, Príncipe De Tiro (Versión en Español)
El Mercader de Venecia (Versión en Español)
El Sueño de una Noche de Verano (Versión en Español)
A Midsummer Night's Dream (English Version)
Mucho Ruido y Pocas Nueces (Versión en Español)
Enrique IV, Parte 2 (Versión en Español)
Antonio y Cleopatra (Versión en Español)
Enrique VI, Parte 2 (Versión en Español)
Las Alegres Comadres De Windsor (Versión en Español)
Enrique VI, Parte 3 (Versión en Español)
All's Well That Ends Well (English Version)