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 0xc807ded9811d7812a3bbc91514eec14ee2a77d162864491a21e822d0bc6d4bcd. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6e07164-e16e-43fc-8f1b-9e25afcc4a0b.json and https://artists.proofprofile.net/proofs/artist/b6e07164-e16e-43fc-8f1b-9e25afcc4a0b.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 0xf2f3b428ddb9d81371345ce4ae3697a1f031776ebd6e026ef2227b0cfe7f1638. 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/JPKI01518313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e5d6bb84df66611f525fa5ad402a6a6be41af617c74f1f3f949d68d37c967d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:57Z), 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/JPKI01518314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2580eff79aadbb6a44d68013e17d840187041c01fdaa292c61efd1c3d015f6. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPKI01518315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e15f39f4d8693fb150d0fa52be7f269aff5dd3c3b630e477b43dda54419d89. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPKI01518317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe7c3873472c0433c97f9b21b0a6ad80607232fc93cacc5f1e9c22735c15da0. 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/JPKI01518320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d0e9c38fda850c17d17d552222d50cea1792aadf2df6b6ab98c9d9eb83619. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:59Z), 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/JPKI01518322.