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 0x8bf2c9278c38c600a8599235116b54747d82d47abc912021d80455387aa38856. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f9f8ce-3d30-4353-84d7-1d2a7b562a6e.json and https://artists.proofprofile.net/proofs/artist/b2f9f8ce-3d30-4353-84d7-1d2a7b562a6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best of College Football Fight Songs
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 0x951707e0357847a82dc20d4174d9413a7ee45a2a7027e1dadde526ee88784f3d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCMG9601704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b41b87b68d24e99c5bf53d518f69f785afb7a6c9e5912939c53766b0c5d9631. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:00:39Z), 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/USCMG9601712.
The Orange and the Blue- University of Florida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a8c6c3987a117f149be9be290746bdd723e81b2432d835a8bef0a35cce684c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USCMG9601690.
On, On, U. of K. - University of Kentucky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec04245c97cb39815e6e9f8ca39e8602b22335e0c351900c2c6be442f3ef49. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:04:55Z), 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/USCMG9601697.