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 0xd3dd3d05f649682f73e4ff3096c7a875386db262d51034a8f40c83b826866a15. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba591423-81d1-4eb2-b699-22f4014ef5f7.json and https://artists.proofprofile.net/proofs/artist/ba591423-81d1-4eb2-b699-22f4014ef5f7.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 0xe76a4cbad0844f50d17058b304c6b97712ca8a19b8b583602414ce8622159c9a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFH2510643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bceada4eeedf19fe4183d7d89b4703dd677dac2d94d82424477f51aa667340. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFH2508227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a56c4789ab22ac2dd508681711c00b2184249602532be33375799cf50b4d394. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFH2517205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3e8b419dd5ac89a8a2ff83966fcf3e5703548593ab508771d613a3629b629. 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/QZWFJ2555669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2621c452a89130f341d969b7d0cfc43c66c71b701caede9462897bfe085bb6d0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:11Z), 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/QZWFJ2555718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f341def184e89c97e5038b91e70dbd96bf580afebc88e7b7b98c18b46a4796. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFM2588254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c50523c4852de34666813c081674c861a991e5406d284f0926aeb7b08bd0b3. 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/QZWFM2588243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ec25323f0d5a68a31fc905cd93b5e79bbe8701ac9b0ec3c54424e203ecd952. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:41:30Z), 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/QZWFM2588226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa488da13a5851659cb3cf64d6b94a5e87fabf4cd0d03e5726772a31515f106. 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/QZWFN2530857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d74748968d0359885128ec06bbb625af87d313b9889a3c4c09cb37fd22017b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZWFN2535646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9bb0d2eafb38fc2f31729b96b0cbe02f964fc0164643deffbd636a4d131464. 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/QZWFN2537946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4897d350ddd0a8103e7a2b3964dbf91060c16923a920bb4b47855ab62e8260. 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/QZWFN2535644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d4da55bad0b83e4b34f3da912172698c6e3446c85e09a2f914928a832641f2. 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/QZWFN2530758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70ba65e386f844374d10967d025b9e0733a03c17bbcfbd69a0cbd9a02033e6. 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/QZWFP2578254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceec1359f31db2b65489d90b52257704134fc69a19feca3ca134e6c285bda71. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFP2574225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124421f12b0d7dca0e4080e15a04d9dc08aa124235f07e785c778ebfab4d511d. 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/QZWFV2574659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3693dc3a66dd985e30480306cc69d0f2350875ced5f1a87411accf9b9fc5e4e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:52Z), 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/QZWFV2576511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e835246421eae5cd2e0efa3c2866f5ccee617c3a452a53d485eed6f7a35ec77. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFV2576512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e262a3b508c0365e1a6afd98e0b120668e521b9078524247b831ba1b66353. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFV2576513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584573c7591b0b86101de85587db2802dfdc43ac352083f61c8c06ef87a3bdb9. 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/QZWFV2576514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56d6370ba485a0d1b67139c6b2e2c45c7779e96da1c66f4a4e943bbcdf06f69. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFV2576515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875f4d6ef0ed1f5dd2d7f758e6ca1f11853ad997986c8ed26be4b63ff0dfa34. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFW2504116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a90f8d85073c76e3f609fba4e2562954498bf10534cde5b7ae5611ed778a38. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFW2509530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232492be95a663a0616e299167cab33774bee1b26fed0da7715e3f5b4ad1ee8a. 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/QZWFW2502078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a8303670d546bb3c9b0fec64794b61d1cd5511f46428473179f90dfd3a27a. 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/QZWFW2588873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284bc9c418bcadb95e751e61c6f5137141846947695ed55de282a012799248ba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFW2588874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6dc47edabedf65309400e56a44f2b36c3d22c210db3923447e12b5d0b9765f. 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/QZWFW2588875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6895796e220fb5942115eb80f0081f2a448ec3038347f9127c9e9ac1e5a3c9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:10Z), 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/QZWFW2588876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b7d617ea14dfb367ac9b3b24edadcaba2a9430f510305a9405133d55cbe67. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFW2588877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80bc67f4a8349c9e83523b8b7205d71c8e205103c3ce43e57c6d2f0667bf562. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ762523439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64360bf9a2556d684b8343e9292b3f3e6974f97a8fdee8cb288a0c0592ee7151. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ762525321.