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 0x8dcc6b6b1ce1c09e2af3b98eb2d48e67505b41b7de7528329918d68f8fca3097. 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/13591de3-642b-44c7-9bcf-4ec1d2ac11d2.json and https://artists.proofprofile.net/proofs/artist/13591de3-642b-44c7-9bcf-4ec1d2ac11d2.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 0xa74baeefb5bbc66aa2cdfeb9e235660a721e9bddd80c2d3a581f0f99fe132609. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SKG151700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b890d16d0d62060a1c64767205692be3174bdeef433aa9584c5ede3c56009. 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/SKG151700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb728949824b1a431629a25349100b628e261e8faf76d544351b596b5239eeb. 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/SKG151700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4e095f32db443c3ff40ea9c0ce3b7a67bb1497b81539fab97296b22c81570f. 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/SKG151700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab44aec718eaa80f8c0abea18c9fe33e7eb70afd2dfe9f2da83660b107eb27. 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/SKG151700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66c01455d32dde81e1d87d4b7cc17e6c84998fee02404953d3d9b6e9a2494e. 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/SKG151700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a6c70121edaecc3edacc7143f2b4d18a99a8ce17c0fde6a8e7521013ab5ea5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SKG151700407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb5dd527811ee249ea7a77069ba704a937d89bd9d0060b8f4bc000b263bda6. 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/SKG151700408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad25abbb61f467f2459732441e9aa85740667143d765a21ca77108dc7735b380. 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/SKG151600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d32d751261fcd89cbe64a5943e51e084c56627cda64d221afcc8dee80443c2. 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/SKG151700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f132a65193710e0afd5ba52edf3eda1e8606692f7fa1b13dddf537a7139df8e. 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/SKG151700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36c116614da86feb613d3555208b454f3a9b000aca8ad1b8298831596abec9. 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/SKG151600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e8622f3c9af34681a3a75420492dce9f3fcd483118a60a79696ee64771483. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SKG151700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5126fc3ff0c7893e84c1a515e6df78a63b4d90d37610501ba2eb5713fe20617d. 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/SKG151700414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2731e139fb8592391787f19ff855c61df5e4a5409e56aa22dafb767da592c119. 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/SKG151700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee946c6460397225b864550e3f0eb9e0b21cd0c9f2c977dd8a80129caed122. 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/SKG151700416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd170a502f3eb2c42837c108bf4142ce2a9418dc9c41f47c677f590ad2149961c. 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/SKG151700417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96e99819a81f6d576bd650d6c75ff0dd8b813b527a7388ba003d12ac8c4a0a. 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/SKG152200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96e99819a81f6d576bd650d6c75ff0dd8b813b527a7388ba003d12ac8c4a0a. 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/SKG152200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b9d5e4baf8e9ae471b623f4f6d5e8efdf520211f7a732e1f53b387c9609adc. 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/SKG152200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d721f911556b9bc0a375cef573947038b2c8542e64852227bcb31f9995285. 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/SKG152200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee01fae57e6c2bbff9e29efabac93470ca21f9613b23922adf98066d0848ff. 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/SKG152200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcace1e35ce075bd95787d4dbc02054509762a965c782f0dc5a8094c7de7c610d. 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/SKG151900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e97aad1fdac1d82d760fd06023a511a1d32a6db61c19da9b1ce3141b58fb0e. 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/SKG152200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc376e5ea2b37cfc2716c2f8b9f7c2aa161287174113727edf284ca320876950. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/SKG152200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4d387854aff72764dee06976911b8fc80eded2d554cee341d56915d9fd99ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SKG152200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859e2fdec8ea82632b0b0d351aa09cb45a84dbedc387aaf3ed84c51ce7596d6f. 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/SKG152200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57586cba6affa98704693ea5eb5c0c76784a3c24cd9c58e789223a4f408102e8. 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/SKG152200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fca4a55758948a679010cb7cb9e82cf81480ac8f7c276e7f5cdb3e50db0f3e. 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/SKG152200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d95a8257716ab07397f1cad437b7c00c358fe93bf12d27c099a431467b99de. 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/QZN882134671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ace586685de68c2112074251bf630a752f4fef300657594ae08e0c87a9a8238. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SKE532000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df1f37fddae1845c3e445cecd8c6a50fdb6b2a3cf2b99e7c4cb145e7c3f7ef1. 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/SKE532000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa435447d550b6d5c37f99f0756c356b132e1ad8fb5c5f1d3c4988db5ad8720b9. 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/SKE532000204.