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 0x05d2dea3ab79e720a7b5edbe5a56b2c55bd663a8330ffc3cddd4fa643fb69562. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/324f1053-3663-40ff-94f0-2b3eea9b4040.json and https://artists.proofprofile.net/proofs/artist/324f1053-3663-40ff-94f0-2b3eea9b4040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live in London: The Storyteller (Acoustic)
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 0x9ef477b4dfcbe01934e929d7189ddb262b513cdfeab2f06556259c904e6e08cd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:52Z), 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/QZZ7L2540050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29898fbfa984f8f86d04dd5520bd15b72c7ed27effc3c291a3d47471df95bc5e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7L2540053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc3c74875a51c86579c18fa8aeedbf0113a0bbe61a4df4daf980afacb4480e. 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/QZZ7L2540054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938b0e3ec430ef9438b4e5b7d137551bdcbd152762ab760c818414967f7722d2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:23Z), 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/QZZ7L2540057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f5d195030ab652038a915edb01ddbc67a23656e1d83ea8dfdad74fb06859c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7L2540059.