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 0xb25c052717212ad8ae73597e44f4d6607eb7ba904ac7594fa39b0fb8a2a5c911. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7771fcb2-ad92-4db5-a908-3e55ed5747cc.json and https://artists.proofprofile.net/proofs/artist/7771fcb2-ad92-4db5-a908-3e55ed5747cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mélancolie la plus délicate: Piano sentimental
Musique de cérémonie et fête de mariage romantique
Musique pour des moments calmes au travail: Musique de soulagement du stress, Musique de piano relaxante pour l'étude et la concentration, Travail productif, Traitez le stress quotidien
Un papillon sous la pluie: Pièces émouvantes pour piano
Paysages sonores de la mousson: Bruits de pluie apaisants pour dormir et se détendre
Relaxing Classical Playlist: Soothing Guitar Pieces
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 0x168c75389ccb6ff56fce5afd3211df901db23df838ba910e9f8a355a561d0f93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLS921752841.