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 0xb62cf142480ebcef9c8b85ac8694ba24fc7a245f6f86e9cdcf0ee372111f4c86. 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/43211303-27e2-4569-a29d-4d2914e431af.json and https://artists.proofprofile.net/proofs/artist/43211303-27e2-4569-a29d-4d2914e431af.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 0xc71917082ec8b8a0b023729a6c8c41a5e6d0846c060873113cf4515c738fdde8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:42:11Z), 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/BCVNJ2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb401f2f8edd4b569e8375fa91ca43be508026e1a63d6c8fbfaed46303e8871d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BCVNJ2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfdf7a5c6ae5b85c91d3bee0877d5376f9f802031876e9e0a296dfb45c80823. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BCVNJ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb847bb7ab23529236ccae7e89c8ac31af12334c9d7c097d5642cd9ad5eb79e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:57:45Z), 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/BCVNJ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c775eda412bcbafa5a9f6922baf8bb91cb213bbc93c3ef91f424723915fa5. 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/BCVNJ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9b8ade3ddd4c16632830dc093c6dc820003010c9beb6ce68b50526d3d1fe74. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BCVNJ2400005.
Vanderson Santos - Tempo (Ao Vivo na Fadminas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b464d593268b67da74c0e2f08103bc41db5f542c13dda9f3acefa0699547696. 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/BCVNJ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32101a170dcc682c53fbeb38f37437d07d9a7c1e9c4a22ec8b61a115d4c3a4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BCVNJ2500003.