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 0x39303c1a9fe4c7e0957b089b28088679adbb4a013d75ee50fd9a0a2e17c69e18. 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/da49ec44-7a13-4865-a54b-1a642f5a1ed7.json and https://artists.proofprofile.net/proofs/artist/da49ec44-7a13-4865-a54b-1a642f5a1ed7.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 0x766e5c9f1ad2685a886adcb38d431f1ae33994e2857cf29e4db10e81d6193ce5. 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/GBSMU8324657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6123c35bc66c792e67f1f4c730755a7cb58c0e64dded3191eb10a912e5f80cb7. 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/GBSMU8324658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0897603eca59b576750502d5e37cc735b43c8dc7ce675caad19cbcb387a089. 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/GBSMU8324659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f669eb83dedf986c439164111bc62d0fd980876d608d7f36f5883f110729438. 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/GBSMU8324660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ab63cd4206c6da18618bdb26354899001f325cc36406eddeca38e4e2e25e10. 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/GBSMU8324661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a58f5320ca40fd4ff57aa46ed48b58ebf126087739627f4aa67d758bdb1486. 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/GBSMU8324662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2582faaaf2d32fd2331ee516ed3347ff98596a8a3d0d8319f7f106ed040845. 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/GBSMU8324663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad5ca0eaf14e695f67f83abf224306bcbe649d0902f2cf55ee1af9fa582cffc. 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/GBSMU8324664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8364bf0a95b4e7576d651e01edc3e4fd7331b586c075c68066a8db0cb03ae8. 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/GBSMU8324665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b50215742cc83d95cb042ddb28e42aa8e311f4d8970b69958dcfde212e25d21. 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/GBSMU8324666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe363b3839d8cc1f2168c3d129bf2aa308cf430b8fa53adda813f01be1a930bf4. 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/GBSMU8324667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c66b19fa41abd5e602c391fc1213d1e3d4c495a57360f015037a23f7449d4bf. 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/GBSMU8324668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0407cbe9aca980bcc4652ade67cf2b7a3f0b68a699f601f1b5e523ad27a8627e. 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/GBSMU8324669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6528e6fe3a31a24198204144cd3a47828024957f79ff7d69c16445746524c90. 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/GBSMU8324670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea692a81dd392300e4d8b8f020aefc3b3350615ecc1e8851fcc061802418cca5. 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/GBSMU8324671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980731e52f7262e477a804bc165b6675e039d6fc8374c4e50d92a5a1b059e3f7. 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/GBSMU8324690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b6384fb1c7b525981f87043dd310cb1b61b4238e4a1fd08bde5f7c083dfb3. 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/GBSMU8324691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7933c816a58c61b509ac59ca18b285c5d7920034829be907bc6413b5c3e3c14. 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/GBSMU8324692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbbd806424d7a7527084f48299532747f50094a81b5cd968780ff685b9278b9. 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/GBSMU8324693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5ca32f7e72d08303989b969236caf85629143d2662f66a694125ab0050f559. 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/GBSMU8324694.