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 0x08801b13d01e6414b4488adb8ca1f2d674cc4d0ad3071bf0f40ad0aad78ace95. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa9c71d6-cc88-4d4c-ab2d-16dc3031a6e4.json and https://artists.proofprofile.net/proofs/artist/aa9c71d6-cc88-4d4c-ab2d-16dc3031a6e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cooking Music : Ivory Coast, Ghana, Senegal, Ecuador
Côte d'Ivoire, Musique Traditionnelle, Ivory Coast, Best of Traditional Music
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 0x845dd3f7cfb9a9852a0d022578b43e2e6d70051bdbcad6d32eee2cb5aa3089b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR0O70856103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88190c5b78bb839662ecaf61f1daf471caa91befb31a2c2882346cebbf35363. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR6V80066068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2d617a157fba8862ddefa3a069d49a57a884034b4729c4de37599e6806cb6d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X41429781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88cdbf8002da073c1ec23f4ac80af06f32a24c797ffb0e897b5c426f5a6e0be. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/FR2X41429783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe785f523074276fc113e2ea25658df41708cd373037d65f191563b420228f8cf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:50:33Z), 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/FR2X41429784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ce061ea132d8b6f04d0ab9039935fe32dd13d3f5724e434e17fb0e16fcb56e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FR2X41429791.