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 0x945cbe15fcc1b37d9c3df4a709359ae6f063c29b921a5d52b46737923df05221. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e66efa-1179-4f17-a989-e261cd817d26.json and https://artists.proofprofile.net/proofs/artist/34e66efa-1179-4f17-a989-e261cd817d26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Luis Miguel Medley (Salsa Versión): Yo Que No Vivo Sin Ti / Culpable o No / Más Allá de Todo / Fría Como el Viento / Entrégate / Tengo Todo Excepto a Ti / La Incondicional
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 0x4818679f001a445649c256f43e397270f815665a00389caf57a58657b9489273. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USL4Q1932241.
Chayanne Medley (Salsa Versión): Tiempo de Vals / Y Tú Te Vas / Completamente Enamorados / Dejaría Todo / Un Siglo Sin Ti / Atado a Tu Amor / Provócame
Medley Willie Colón, Hector Lavoe, Rubén Blades