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 0x2f3baed8aa6da9c18a11a49680013a5d6068a0ad91354547afacf5531c01b668. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a06c8d10-e089-49ff-be12-9f3ce6bc65f7.json and https://artists.proofprofile.net/proofs/artist/a06c8d10-e089-49ff-be12-9f3ce6bc65f7.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 0x1348dae1347a842fffc0a5989ea2841f010fdbb00260a302b9f7897517891d3f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:50:34Z), 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/QZNJY2372260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edb29647d236c327f683827671c2742f12a4d79da83d287f587b77a21ed5fb1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:30Z), 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/QZNJY2372264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c462afe6a28a1cb46cb9b1fa083fff5ad4f52054f42507ca3ba6cb52d8e812. 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/QZNJY2372267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716a891dfb55c16d41f7f833b9ed5763de8d5d3d4790f61a99ea14990d95de1c. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:34Z), 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/QZNJZ2338483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ff3f3cd2875fc175e41ddb0a1b73fdba1abb40061253cb389f241d118331bc. 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/QZW9L2355996.
All I Want for Christmans Is You (Cover)