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 0x8c916f913e65e3102d08717ab06438e85d56b4f0765d4e451b5b9de519d6df44. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e642e439-10dd-4370-9c72-bd7c840609e8.json and https://artists.proofprofile.net/proofs/artist/e642e439-10dd-4370-9c72-bd7c840609e8.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 0xd064095151fe03f5cc7b688f23e14da2976a34f70e1a8aa812f9e7753f536e71. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:04Z), 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/QZRP42360099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2b9a95a3a570b00977b861d77c3dff4e9cc7ca7d81d2aff479b4c0bbf6814. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZRP52384052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613228852331f80561724b9ebb9d7616e3b4462879946bc81a7e8f1b2afd852. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:49:49Z), 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/QZRP52381961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ffe7446fabba88c64c707ae046d481bb4ce7713e9e3da187ba8eb915b5be68. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP52381964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7432dce618e68c0ff94018795155202dcef078fb744a37ec781c338c0445bd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP52382248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa84a0f90370181680eb60d5eb51b51737a26cc4b49a31df9f30feac1b3627. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:05Z), 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/QZTAS2324752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2676d38ff2883b98080fc57482593159b97322f317dae89590d1098574f7f28b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZTAS2324757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada9e2a1469719379af42c62b5a128154eb8220b5bd75979b56793506247ed5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:25:34Z), 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/QZTAS2324762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d05b93a1190ac1dcd5764b8823536bfb9396053c71eac6ea8069c89e8e1070a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTAU2305374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ef28439b063c1262bb25e19a8df4369f0080592c94a8c10b0fc66ddb157550. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ42074109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400c075c1f1bbd634c602ccb2149c02e3457ca7fc62c3d6c076742b8a06a18f5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZRP52386133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0d0f4cba9fcfbd9326ec48b82ac1ab5b1adfc9bf1cee846b0d5b2f1ebe09a7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:38Z), 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/QZHN82342485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb823e4580d98c687f564cd7db0a50df8d3fee4d911c44add8b53c49cb842aa68. 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/QZN882185593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6496a096f4c52fc898cf0f9ff5844186964c7091107e7d1de51d1b6a430acc83. 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/ES71G1947575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7722911ecbfe26dc026a5cd72e406c0a362c3cd7fb7ee23703e02cb50f578288. 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/QZGLS2278068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d51e9892c32d6db69d0b5494143e02d1c7e2dad15fc2b073b930352a3f279c4. 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/QMFME2000688.