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 0x1ac407762fa5eb293df61d4ca1d94a6d0913543401fc629e9f95c68f1ae77197. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8ec2eee-6baa-4ab6-891b-7c17a9dd9b71.json and https://artists.proofprofile.net/proofs/artist/b8ec2eee-6baa-4ab6-891b-7c17a9dd9b71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique de Fëte, Vol. 4 (KasbaH & Friends)
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 0x44f4b2891a9404a075936fc62e68d542f3467adfd18fe0d304522f993db04b1d. 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/FR0Z42400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd460285ad786b593f785c5a9ead3a84ec44000fecb515b5a5c231df7472d62. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR0Z42400700.
Dakhilo - Musique De Fëte, Vol. 4 - Dimitri From Paris Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49099fb1f74e7ad7b210c4915382c85c7bb07bfe527671ecbf0ff664034e9b32. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:54Z), 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/FR0Z42400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb6cbf3b0779a1542637f743eacbbc52f8f01e532288a24bfacdac87072e0b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR0Z42400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49bd87df303ef08e6a4ab9d172fcdf7287de63bfc6f1aa88f4e79f76c1179c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:36Z), 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/FR0Z42400720.