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 0x266a3d76156c2d6261e5dfdb7b83fd2fa9818c1475dcfb8a15a6bdfabdb5bc83. 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/105e299c-dfcf-4387-837e-bd1d1482c527.json and https://artists.proofprofile.net/proofs/artist/105e299c-dfcf-4387-837e-bd1d1482c527.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 0x687913884517ac021020461172fe7adaaf3dc2fe63fc663916814195281d6389. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJW2469677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60993264f5bb49c1967bb910a0d6b113d7ebfbb94a7ffd35dd57a0a09b4fd6b. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZNJW2469594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d34c329ee9e32a17bb6b438803c64b964e602208490c1a159a1f602831edc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:41Z), 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/QZNJW2471387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28aa9d483b16892fe552b6ab8586d7b9711eb3e30ed64596d054782e9218100. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJW2471362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c74782b2eccc9186435afd9f84b7c4d9bfcfd8ed4b16a0bce9c078bd97dc48. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNJZ2183169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ceaa6b8bb1c3d3bfd6a1e6ce5feb1a74884940a4ee041283e3ac57a110027. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZNJX2420329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f11964a2400fe063ab9b7c8d9cedb9fa3d4d9b1ecc4334c081063f47d5497. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJX2420675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fc6047529bee417d7a29ff42ea5729fa3482d49bb83c78a396fd173bc5c65. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNJX2420202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08bbd596ccbf317de652c81fd7cfdefee1902b001ae57660db789bdea18f680. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB72543358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822fe1589624c4675f882acfe9ac983dbf7f095dc3191a58e8ed780b841cd0a7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB72533636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68727e4b8b42d33b186ae257c0ec213e7287941c198a4136ccb4f57cae5d5f7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB72543511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4f700f7d368f5fb01bde52cc7b62322ceff3ea6ae02a5aa5754f575cca3cff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB72538579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11d381cdcea36e3a7fdeb4597caa39825f4c90c6e50ef4f8d9bfb8bf03479ad. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB72545449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc906868d9d967fe7c9da03724ec24b3fd7f25dcf1155ece20c08b89afc53cd27. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB72541696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988b6dd9b619e89c9e2e155a8e636c514f0b10d5f87d12832802739b48af09d4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB72538575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f1db7a390fc82e5e172aa92b13697cf2bf0307f6e71fe870173cee2938a2ac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB72543516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a43929f443db9d7bd0b70ba5c049b0291e99263514e13ee0cd952f36a9b559. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB72559701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893760e17ad8a63391697c62ba7f0ac795cc9db4e50a1196160b27f5cad96f62. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB72543515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4bba0e1d6cf17ee2cd9a4dd7b30bb3cbd84f11bfe7bd7d00ac6838713f80d3. 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/QZTB72543513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb83b5f4932d0b6ef60bcb2820a989d2d78bd177d561db7fe586d5899c8bd311. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB72538531.