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 0xdd0aa2704d92ce154c65ed90ff9fd08d02d72d867a0197a68daa1b9b1a4ae885. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22e313e7-45f4-483c-b639-6936df40008c.json and https://artists.proofprofile.net/proofs/artist/22e313e7-45f4-483c-b639-6936df40008c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mużika Mużika (Festival Kanzunetta Maltija 2021)
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 0x036b856cf3c2a371ef4ded68721827417b85bd2df90356bfa28c79c482863c96. 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/DEZ072100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f3ba1188df088a654dee0e6d4011d540b57b755d85922236625a140ac6bdd. 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/DEZ072100682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8845a23846a840cb3c42b12914446302114554232c49c6aa315ee8eed5e6d784. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ072100684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1816ab6ae0cfe267a39ea8959e95f977d1124445bbe73cadcff2ff6dc8417223. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEZ072100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f32ec5472c36859c3d8f8d429c90c4ebd69ffc46c178e307d0e0b044a2abc9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ072100688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb43c22dbbfcc8c0244f5096e302fe310e5b41bfbbda1a37290a5aca1c064a0f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ072100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214a0932ea31419243e357e77b98bc9bedcc2e010a26e8e664c6774fb3581ae2. 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/DEZ072100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815d8d5c800a12f1a54a4eb760d96cbb9dd5e59c49c7786a0dda0abd2fa22b4a. 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/DEZ072100691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3441bf365f7908840491463d337a88ad24f3f9627f1f04519006cd5d2ee93c9d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ072100692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e862a9fc9583a179c8658db8eed2740acf3a1cfc56f04ca5aa01bd2a4c02cf. 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/DEZ072100694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0488b1ab4f6362a4635f379eef7a2ba8d541133bdd64727c3b7756c6cedc702d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZ072100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dffdcb291473e35b7f0d77339b2c882874517ae0a62442fa1a1627ff8d29aa5. 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/DEZ072100699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad5be7edd22aa64101f8bf87cf2021072e288d29563340a75170f0b693407b1. 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/FRX282321038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e777a450072edb2116296ad2a25bbff8c5ab1518d3ebdc1ad2d0eb934ccbe3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZ072100734.
Mużika Mużika (Festival Kanzunetta Maltija 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdcc619dc3ddc90692fbe8f55ef87b60ee48865cbe1ce9c9f923c9589e5c4c4. 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/FR96X2301668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe591d9ee22d6e27ea3b0040369aa2c639205423846fc37372ab5bd52cf6df5a6. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR96X2301670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc53b751a6ff8ff752a7bb6d33d77a222ebd88feb82fa7248ac8897cfd894ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR96X2301674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4915f6676345dd43027fdf5dde65a864b652d97edd7bb0bb8df03d9f7a0833c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR96X2301678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17706bfc828046a867352002f588e5f1f5819e6e70b0742537eb65ca02cdcd7a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR96X2301679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebcba8020596065872fa57b65b16db629ce1e1ab25682cfeff852dae2c1aa9. 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/FR96X2301685.