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 0xcbd7a23c63f1330170dcd393ebfa89d56039f68c3954ff8dd58e79d67df9364e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bedfa1d-1cdf-4bae-be98-a1825439eb91.json and https://artists.proofprofile.net/proofs/artist/6bedfa1d-1cdf-4bae-be98-a1825439eb91.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 0x964f7c00c6f448952e54e49078d265f75695cf153aa27fc733595998749d8265. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:04Z), 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/KRA341610138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2724c3c8c514896c03997bf8e68690f4c990224587c7a9fdadf857114941bdf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRNAR1601318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2948e9e0a5f08a1d9220e0f1389040fb3f31b56f8436919582f611438c66179. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:20:40Z), 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/KRNAR1601511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b4bcabd39a4a73b391d62f31860129f46e51d14cc4a0bb09418a335e738cdd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRNAR1601512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c89cb6b93f45c41a6e55c95ed07e3c1fbf5ed7076bb3a5b3979f0d80644cbb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRNAR1604286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d6c95d68c65f330d82f7e7a1f84d94177cb02a8d729456bb61c20050f5b935. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/KRNAR1807092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096ef9473c118b031e1d8ef19fc6d3ed8f13bc0a88b13d2f5f69324ba40fef1. 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/KRA491900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02f3bed982b957ffc498ae215485cee0931307b53fa242422ea8e5c364b954b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KRA491900482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd150cecc44a34dd4ac4324ddab54159865cc1f113be4efc7b728a6f9d6b72cd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRB462000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838cd12b34910463e4cb5ff9381e3c37ba220f0782c42a0f40d12b11c4857c5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:18Z), 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/KRB462000791.