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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b710876daa797bafd457df78ffd95877adc7a4c85f156ccc2e867b6ea2d173. 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/ba6de2be-8cdb-45cf-b560-ae2628ab62d4.json and https://artists.proofprofile.net/proofs/artist/ba6de2be-8cdb-45cf-b560-ae2628ab62d4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce497be9e012f64140f7356b5a83946c497e9944b5e3cbfe80a7fa72d89d34f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USHM21937706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfb6d42a0ac7aac95ae19e8cdf6b676cd4a260453a26643ff40e4e095496fe. 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/USHM21937708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c59679ad5ace30b2f0b49e8c5171380f92f3314441f801054d2fa6898889709. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/USHM21937709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1bb6bad3c32deb9cacabb79ac52d1c7b1d01981bad8d622688b8efb74c1bab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21937710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464d3b29b3f679a72dec4e7d0201d42856925a74dc2ff4e39c2360b1e0fcf1d7. 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/USHM21937712.
The Scent of Spira (Final Fantasy X - Besaid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf33e72fa83d9ecfc3bfa49ca91de920fdf15f59dc1ed14c176e6d522da77964. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32196181.
Old School Musical: Mv Expo! (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d70b6aef8bb9af496381214d07d4c828990e4741b47d9a55c05627ddf8be5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM82096725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69415bf51344136580119584947098019b93901be0a71375eee8abb597a5f5f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82096726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe0b41a0ca64873ce1b9cc13a066a7411d277df460cf4438525a1e0d028709b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM82096727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d31a2c20519e67b789edd91513928566da081794b987f9e9fa80c1a034b630. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/USHM82096728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772cdee5874fc582b260b62108226da83bc690d5c6bfb4b75c7c23192bf9d236. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM82096729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef22d358a157f7882a3ebc36391ab41ba5dc328af923302c6208f58ff79bd7ae. 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/USHM82096730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ebf155f6346b038bfe7515fcf57f305c6bc805a77478f389765dcfb1df9fe7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2191870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d89dd5df36c40a7d946b56e93806763a0c8766adfdfb65374c0cd4a19a735f6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USCGH2191871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd2ebe2b9e6e1b692d8cc6827d435e1f7825ad52eed7c50c114dcb7a90ee8f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USCGH2191872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41043f0f759219bb9814f6b10aed93cc60012f31b9e480f26193d8d4aa134bb1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USCGH2191873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9765333057fb6a51c22f7f5239885ba94ad16bda1f9354c48be512b2ccd5a4e1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USCGH2191874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c459f76c50c274be685719e0d50b5ba294d2072aef7e0252b49f80ba4f61fe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2191875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6b5d33dca26f54a86337f557a502fb14e0e6b523a073d2bde45f43207cc65. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA42158814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c3bf7573b761848d1f202b0c45fa96c6f02e5b76fd43fe5d653cfed4031a95. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNWS2171194.
Pizza Time (From "Final Fantasy VII - Under the Rotting Pizza")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb921c86c919bce0bb86f44b848a7f3075c56ba6bb9fe51ad0a0cb17b7c1f7741. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN52316636.