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 0xd95b026d9870db78dc10e94216955338db936cdb1f8c8fa8b8d1e6c3fb9eb7cf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f54de30-82af-427a-84a7-35e303c61f3c.json and https://artists.proofprofile.net/proofs/artist/9f54de30-82af-427a-84a7-35e303c61f3c.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 0x51a9ebddf3c04896a8de558f708ab42373ba50c1d75f62bde6500d0e9a085b66. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR32P0904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819ab050804fcf00d5687a2162e4b8c35620714f7e5273e127de1c5436800187. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR32P0904040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e439bb091cdb03d2d43e4c92b1b7ffabb08059f9eafeee670031f0a3e6b09fb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:36Z), 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/FR32P0904070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103e30da0b8c0d156df18bb4f8bbea6995c1263caafc89153eeb85b0721fadf. 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/FR32P0904100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72991b7fc578086a6d66b703e443e4be1c51101a5b0aacf1f170d2741c47daf4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR32P0904120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a2c517918a08946a71f2f2f4629f35c11419dd316302a3c30308263ecbd2c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:07Z), 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/FR32P0904130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499611d03eaee3d377ba3d339096b3e7e4812a694a1c6096120eaba920dc872e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR32P9900010.