1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x011de546085de2db99c6b5ed7b143f405b1a25c1d534c6ce6789c6272c0a4b2f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37c7a7b2-670b-41cc-927d-58c4ef19cab7.json and https://artists.proofprofile.net/proofs/artist/37c7a7b2-670b-41cc-927d-58c4ef19cab7.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 → block OTSBitcoinBlock must exist at that height 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 0xa8e01a58ca2c31e0443bf5e549e942e161a4b46cdaa3ff1310a825dab31ca4a1. 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/SE6XY2375714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b90e8974e8dbce7448e70bc6046c2976d6edb235d4ccd287c8c0a62d214ac50. 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/SE6TI2324815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa35ab3f4caac1b9a4c7614a7467531bb02da55736d21ec10c4dfdf673a74560. 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/SE6QE2398515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f60e75f8686ada078abf06a53ad5bd3e0434d9f845bfde8fdd3d9d2634cfd7. 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/SE6TI2367487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73875bae2dd9226a3cadb8fcba5b61c84cb3e150f590353ab5ff68208dd76aef. 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/SE6XY2322422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851e022978f081f552c085a5716d3b615b8ddb590275f78479bd10672d75495. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6I32359769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6d373de85e28569476364dd5f0cc4999634fdaa2e0921ae66b19bc12782692. 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/SE5BU2205464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc50c1ae24376b4ce7103c030e6fc26219133c930f1f16763056deee485c91. 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/TCAGF2281472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28e3cf55209f2d2c9a73f3aeda6daacf2a83af0b3ddfe1b4eba06cbaa49f97. 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/TCAFW2104858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b0861f59ecd5b16ee52c78a277bd46bd53ee7c6054f40aecc7288f959e7e0. 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/TCAFQ2139643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532bf48736689644c53ab5aaa7d7558711295317690d8d262f7917f1f2d17ec3. 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/TCAFJ2164575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b773062334635ea3acb0f17fc3edfee70236fc0a6fa471fb3ab5b68ee1833c8. 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/TCAEK1921278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048b0a689e7e0c967b2332e9099c16eb98f9e324f7df13d1126e8ceb1847d35. 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/TCADW1874072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa080ceb74f7b22af3d58dae42965cfe1e49385389b314ba1954144ec91aafc8d. 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/TCAER2073939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76103ed87d198db6607167a700faacd77487973c49734c6690a18471b2ebd25a. 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/TCAER2073943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf2a917639b24b2c155f0d4e08e41da556733ee0bb17a83ba0a88840956c040. 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/TCAER2073950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97edc5aadf94ff9037e36188cc5d547c25ba8ba027cda8a5b2fdc9ff4f2a71. 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/TCAER2073956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d9ef52356ddecd77d15ca735b0a46b72f6c7d13d143e2d3f35efd89dd2de33. 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/TCAER2073959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83a118a98cf9746591c1dbeb16a17c059dffb3d8e476b6339b117dc94a4b1fb. 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/TCAER2074207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a09c402f2a7f7635e1655408b8c756bec37d3447dd1ed2f2914c4f43edcbf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAER2073962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b201547bfda2d2dac6d82fdd27af88c8eeed0c3adb6440ae61ab0f7364728d5. 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/TCAER2073980.