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 0xc1d3bfa291e8669a038ad83f995e93266ca3bc32bcc27a6e43520d5c95880a1d. 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/82f23113-0f1d-4144-9fef-68caf2a00f15.json and https://artists.proofprofile.net/proofs/artist/82f23113-0f1d-4144-9fef-68caf2a00f15.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 0x22c4022bb9aa3e4abcb2d0a3481b107bf524a5b07d738c3fddb81d37f0100301. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBX722300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7234b633a0de509e93802741f4fbc632ca787b726972f64f183dc852efea1ee5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBX722300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1322653b3f9d85196d9d5126c36742a48c914b2e012c4b64ec6bcf7444b2fd6c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22443577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252c9778d936950a373b18e340e7f160be389dcc322b6d216e1c3e0372e2326. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1378792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb58346d80929d2c17182466253f043fb82902199050c95b44987c7cd4afc57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92375692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585067ab66071703d907962f100bd36640940ddc8b15b626f468bcef484e0327. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBX721900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ebdd77c4192ec1c97d87bdf676e9e93593e69b505337f96b64569fcc52affc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92173041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb58346d80929d2c17182466253f043fb82902199050c95b44987c7cd4afc57. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3Q92375692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9becf0301a244f9804d77ee0338fec752bc06e3de63fd5d911f9541edfc6a048. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFL2184206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfabc8eef4e0086b5ae8526c92544c5a0d0d91c08614e8315973bb9f032fb294. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92470021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa445aa52881e01aaab8e377a4d514854152eca2c677f9f6d73ab6cab94e24f93. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX3Q92470019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e34e451681890eff91a7b3f3f7ec3e7d74cb6b2736a372d15fe242c3735d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92199924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb779160b4c4873c77cd8745a2a03b0a26301b0e161b995324da7d4331510156. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEN2190035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991829dbd84f9f98dafe2fc2198aebb7ccb94199cb032784d75d730f365da6d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM72102623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e94e02a46d720fb32e47e11797d4eb62938328554e86e234a3022a0daa7ba1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGB502549416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bab259ca1fb9b60a50944a962f3a5a36b350bcddeb55325bf30474f1d9d5031. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEW922301830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8f5ea937f75d7819126fca316386aa86c37b0633c1cdd436d36dcb95f29404. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92033507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446fdc470a07aaedd10594caa026837cf9047110d6ee54fb82764877d322aece. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92033510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d93f7bcd6583c8f72a6334ed83695c2cdabe23377db8f02eb6d0975df7c03fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP1860514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3be62d0438824ac8ccd70fe18ead2cdf7a6ae872e699d12ce2d2383e0f899ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2062469.