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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f8156f13f0db07be64be83c476ee2bcbaa48f918b26fea663ca98ff09dce6. 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/7b0ed70e-fb56-4a9b-bd05-6fa3500b8ef4.json and https://artists.proofprofile.net/proofs/artist/7b0ed70e-fb56-4a9b-bd05-6fa3500b8ef4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Want to Break Free [From 'We Will Rock You'] - Tango/ 32 BPM
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652836bf03944220bb6ee1574caadcd98e455b061670f3340a35e48fb6847ce7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLHR52122039.
Out of Reach [From 'Bridget Jones's Diary'] - Rumba/ 24 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc1b80e076728ce54246517bbeb707b10f5d1dc8199ed86c8e4b836b3455504. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLHR52122026.
Out of Reach (From 'Bridget Jones's Diary') - Rumba/ 24 BPM
Dancelife Presents: Movies & Musicals, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc1b80e076728ce54246517bbeb707b10f5d1dc8199ed86c8e4b836b3455504. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLHR52122026.
Peter Gunn (From 'The Blues Brothers') - Tango/ 32 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b6249bc4be34bb77462cfd808160ec9a4593645c93f52fa9cd4822bd345ed3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NLHR52122038.