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 0xd1ee3add9c8adb7a0d6b2e20f95f153fe2964657657f759a3bc558205c9355b9. 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/dfaf6df5-8b50-476d-b974-e52f993a6896.json and https://artists.proofprofile.net/proofs/artist/dfaf6df5-8b50-476d-b974-e52f993a6896.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb1e0b3aad436ad921c6a5c2a32097f1cf9c498db784a4ee47d120152f830d8d5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWY2251772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf972aa302865d563b2bd4e05e8ac3f06a0d1431e5a2d3d5a83f13385b74cae9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZMEQ2209804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6e6b28fefd3e060ebb243d1fe556f4712dbf354605fea17f072d4624bb24a8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:02Z), 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/QZTAS2287372.
Live At Revelry (Outside The Null Field)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb95d589cd50ede099e17b20fc902cb1c2c84d7042402dc1c5c516144fe984. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN52456629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb95d589cd50ede099e17b20fc902cb1c2c84d7042402dc1c5c516144fe984. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN52456629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfd57b13e7a1a374f8dc92e482802a1d9f568c9060b7985d1866a9907cff4da. 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/QZNWT2451365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75591fa71768063261a4b9e4d6bfe877e61c7f8aa5f29b2668e52acd18d122f. 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/QZTBD2446760.
Bonus Track: Silver Linings - Lost 2020 Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c468fbbfbc086047301fab18c79aa20d064037b929c23e4aaf5737dbb3b70. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFR2461895.