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 0xe3e52e1d41094d3efe0f01b17edd1fae328fede65b7575abac1568e6b53d7acd. 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/a583f5b4-ab22-481b-a309-3b5348631083.json and https://artists.proofprofile.net/proofs/artist/a583f5b4-ab22-481b-a309-3b5348631083.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 0x59f2e546542ed7a739c2989ee3aed2585c1fe38510b3994a163f0267d56b1a28. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:19Z), 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/FRX761512845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaa292d7784157829c7cc10ac0a4308186a68a0273fdbc2a653360fbb7d0020. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:48:22Z), 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/FR96X1519305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10c150aea58d890b3d7216eaf28b6fa649699ad9d78c9ae36b5c6795b436164. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FR10S1645016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896d76696d0669ac84a04c058b2e0dd6a05ecb89c7f2adcf191dd8a560914d86. 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/FR10S1704503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc74d781a0efb83d366dd640a530426a033a04575c063ebfd17e76c90e4a4af. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR10S1704504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f3574bb176a3f1c94c88995ad23e8a1d3c6aa30cf28dfd3f3f32eda1302c75. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:33:32Z), 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/FR10S1704506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286fe90acaf949b822e41da2580d400af68922dbea867041c0b2586e35f05670. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:13:36Z), 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/FR10S1704507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a46f0d64ab696e21c1b9a80addca008dd2df14351aeb2e094e29c522c847ffd. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:38Z), 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/FR10S1704508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eda21cb4f354301ffec6506452f6475116ed36045f95e85d770969347d61aff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1704509.