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 0xcae41226723e6e668d3365059dbc820505897e8007493fd5d59ab61cf0dc2c14. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41d62ced-2d9d-47d5-8bca-77e47cc4f4c0.json and https://artists.proofprofile.net/proofs/artist/41d62ced-2d9d-47d5-8bca-77e47cc4f4c0.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 0x5fd8a7e3346245d3d2262fb2405308c09b247746d85a5e0384c18e39655c8e84. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEZA22400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde94c399ac0a74a1431cea59a738c680df43d061e06dc4818515f0fcf7975405. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZA22400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d13768a6155cbb6694c1e7145517cee588292cd2107c791e49c19865bfb2c8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZA22400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4cd952614cb0c2f5c0f9622f262aeb7c1f7a0a45af37863ede35424facf4d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:39Z), 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/DEZA22400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe321bf905e55785f17cc30669c6726e1437bf7b73e09b50162483065dd9bc87e. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DEZA22400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97a87237b8591b374e54d526db68432fe9d3bef6c5d972d58b6ddfa2ed95347. 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/DEZA22400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33f52901db68022a8e036e53b382796259b8355e1afb0ea2849b87df3fb4af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZA22400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bb3be0da50b22e1aeea01bcdcd34a9bfd71ddaaafaa93a0723aac93df85546. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEZA22400384.