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 0x98aa573797837b99c269501f7eaadd3ece8d57ce4ed2cdcc03140544d63387ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/182d6cd0-164b-48a5-ac58-acb8e4c47088.json and https://artists.proofprofile.net/proofs/artist/182d6cd0-164b-48a5-ac58-acb8e4c47088.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tanto Tienes, Tanto Vales (Mono Version)
Mi Reina / Cha cha du chasseur (Mono Version)
Vertes Campagnes / Uno, Dos, Tres, Cha Cha (Mono Version)
Cuando Calienta el Sol (feat. Jean Claudric y Su Orquesta) [Mono Version]
Esto Es Español / Es Ilusión (feat. Jean Claudric y Su Orquesta) [Mono Version]
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 0x2f5648868bc482de1b8a7b63c2e2325e80ed862f09a8cee514a4d105cfd3e6c2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TRAJY1714106.