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 0x034c42606899c2300c42b98d15b12cff68fd457b772692f7b2a03fb34b857e2b. 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/a4d8cc2d-e79a-48e0-a44a-4f2e7f6432f5.json and https://artists.proofprofile.net/proofs/artist/a4d8cc2d-e79a-48e0-a44a-4f2e7f6432f5.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 0xb593ebd4fb827cdf8992df1c368862027a4ed4e3a9984aa8a87d762a5a8b9768. 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/QZPEW2429213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767ca9815bbcd83f94de53cd37e55df84ac4d25055fc68bdddb33bd654bb7c44. 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/QZK6Q2188048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc552712690ef81548c8da5630e46715fefbaab680143b1f409784b16a555b422. 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/QZK6Q2188049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d555cba8342b0b1a99efc1c58d1342310eccfa6607c5ef4ce77a6c8ba6bcae9. 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/QZK6Q2188050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093b7d357eeec27506e462b2ab3658addcebab0ca8497dfcf1126886a34c0d13. 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/QZK6Q2188051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19b20e01172baeeceea3e29dc95e16277d4dc7267079b1ea4bf1966c3a3e192. 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/QZK6Q2188052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f7308cafd9cdefb1f9414b23ebfff67720ff8ff98ef125e22c6b39a1e24e1. 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/QZK6Q2188053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ad8e12e9f4f4a33454edb2865e79ed6bd404405433a2b049e7266835cb498. 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/QZK6Q2188054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa80841fb118c79f998fa04b8495779e82326ec229e9b9e656d93adb587ee98. 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/QZK6Q2188055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c22348a84fe4049023b66bf9079c1efc88691811008d055047030e23e9686. 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/QZK6Q2188056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934d4751ffc45f1d21b17f8656f592a4b85f7be3f2678f8816c41184dffd3dfa. 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/QZK6Q2188057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c4407e4aee40fa0b74ca493984ef5eaf6f6755c5b131cb6ac7639330989f6a. 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/QZNWT2021142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f564a3bd4903570959132002d8132f7afafad832e7d13db06e06843b23bcec. 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/QZFZ72168334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b46e417afe116ab9c75f7a774dcdba8a5a0a6e0347cd7d278125762f22ac9. 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/QZFYY2111333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f78f48c62e53138caab48e301c15d6f7a041084334f731493ad483a2673d3. 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/QZNWY2018279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a061f8c67eed8da74e78fc6760e74d207e16ef0d1b3c2c3d3d3edb32ce1afda. 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/QZFZ72168338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa509b03eda62860d4e8d1285d292923a84dd5a17c5ac2caef63229e8fe60537b. 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/QZNWT2087467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd508a2c3940f8ebd270a5f807e7855774837fc8fe5d44a534b38d455e9558b20. 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/QZFZ72168337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed1da5326645075c71a09e124bd5b7cd6d5c7ff2fe2db14e515036856aaa6f0. 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/QZFZ72168336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad0b2d2c148c75f9898c11449a344acd6416a9aced88c50fc2b9f9a26e006c. 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/QZNWT2087456.