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 0x69ad037ab79b1c54adc3d3544ce77851e1669bb3a5594296e3cccea2069054f7. 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/115d6288-b3ed-440b-9f6b-eb3a108717e7.json and https://artists.proofprofile.net/proofs/artist/115d6288-b3ed-440b-9f6b-eb3a108717e7.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 0x3096539ae6ca080124fffb83c2f087b0d896f5d51fc7a92a4554b5a131d35bf7. 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/BK4DA2430699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b8a3f7bc27b872d084ad93838fbd6d2bdc91cdb26820592bc6733a8f817838. 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/QZTRX2458787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe891d58aaa6cb2615b66971b8d304dc488e34369e1d7f0f2211f06cb62bd68. 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/DGA052368564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a99c8b956b85db47f3847cae50ccfd8928927f407b6523c8a6873289ce0d5b5. 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/MXUM62300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf64acb8696e84a389cae88f920f9fc8a03a00ceeca4498a97d19e81f3bcf318. 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/USHM22252721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd3a5b08a04e1a66510d6d0e96cbebcf88c41f4a655afdbf9320d1920c8c07. 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/USDY42271671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4149df1537859063e62fd19dfb52eb679af65d70c253d6acf0eff5308d1fa78. 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/USDY42208428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab86214634277eb5160ba7502bd51cb314ca4a590387cd2589d5e0582f4d0e. 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/USCGJ2239752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270c50caa6714657c1fb20e07b0ac73f75383705846e1008a86fa716ce033b6. 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/QZTPX2127533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7afbe7a974588dd942d30bacbdcefd60651e892e17e4ff5d58138f7e272f35f. 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/QZMZ92135503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66755f9ed74ff0f986fb3b1e4a5f6f4f2f2b3df4b53c26f17637d259742be5d5. 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/MXUM62300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b448a1725998e45ebff0aaf77f2b990fc3e072a43b160689cc454ec7517034. 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/MXUM62300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912583108771f734bcc17c31d75cfd2854a965fd3c04a93c919f7cc1190ff046. 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/MXUM62300549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d485dd1c7fc32389285c3f75f255ca542486f54da22f3001642ccf35eb688f. 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/MXUM62300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca596246b9809ad0c2d518760f5462d1f28679696295ff7a2d5c0815a49f6d6. 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/MXUM62300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dcc4835a81d2482f8404cc41b573cf437571e7ef5178ed46da2052703433f6. 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/MXUM62300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6ec65dbf71914f542d9a3a61e06fc3122a2f32112c72daae6bfc5413119b1. 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/FRX872322000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe891d58aaa6cb2615b66971b8d304dc488e34369e1d7f0f2211f06cb62bd68. 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/DGA052368564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9453b587363150ad2fb1caeb7582a205c3856f9aa6dc3224d00f3e725650e. 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/DGA062334891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a871e4738cd0cd72fa4969c740b09716f6d48e85668e79e88f1fd6be687d72a. 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/DGA092353605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801cd6d1d343011266649962d64cf603d9f9507ebaf2f7dfd559dee2e236147d. 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/DGA092353606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bfbb4670cc10d54f2746f7ba577bbc6d00c4bda8e541565acb8868ac5ad0c3. 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/DGA092353607.