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 0xe5cdd19ee0705873a43d9b9d98424f7ddf0e6ed9cd9562ec3f880049e4bbc27f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64ab5c86-9230-4d78-be6e-7362cba078f8.json and https://artists.proofprofile.net/proofs/artist/64ab5c86-9230-4d78-be6e-7362cba078f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Merry Christmas (feat. James Morton & Kizzy Morrell and Studio 7)
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 0x2c38b25079b274449117bae1802240934a147ed48fee813fd0bf07006ae2b7b2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA71849344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636f0aa610c76340d60c632b93c9b618f5951f0f575b6f4d310e51a168faa98e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:00:07Z), 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/QMDA71849345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf55ec282e859532e930e91a926ad153c605d3d37b6029bb6417e5a8b1f4fa8f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA71849356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1b24339695c87662eccbcbb77b47a322341ce12fab6ee0e5327156e78bcfac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA71803202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461eb6feb63bec44adabf4913397ba9a968d7fa62e46a4c7ce3907a3be0dfc9b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA71803204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc02a786d741759e82bd311c9d73a3bca475d43d6532d00d377d91a61916518. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMBZ92078205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955abab880dba5f4d7b63f006fd6962136b4e41953a7b2e41bdc4a779fc6df89. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:34Z), 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/QM6MZ2105746.
20th Anniversary Live @ the Fleece, Bristol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d6cb1fb1f5e05b36b410814ccbc489fbac49ca12b4377f36379b21234beebc. 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/QMBZ92577118.