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 0xe9b96a3f82c1ac00add90ce4075c66b5951cb008a320569ec6a6b3ea3cae4f1f. 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/802a9438-cc7a-41ae-836b-0165f0cacb0c.json and https://artists.proofprofile.net/proofs/artist/802a9438-cc7a-41ae-836b-0165f0cacb0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
So Good - Alex Mueller, Retrika & Sputniq Remix
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 0x4b77b6b52f306cc47e51a8e454582fc6b2c2c59eed45ad6544b76337d8e86806. 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/NLQ8D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7119a26696b7320d9f9faa124d46542d039544e3771ca47bf3e17eeb9058cb. 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/NLQ8D2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab178bf1066f7fb2cc4ae5011b479430257cb3d2f57a14ba88b9ce36619aad5. 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/NLQ8D2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481456ba415d26f48d47585a4a62982a882903e48bdea0249efb5a088eccb645. 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/NL5UG2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa240d1d59469f224fd3e435ccc4baff920f9ddbbb67465cffde1c55b2074284e. 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/NLQ8D2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12cf072df32b799c6e3df2c55e5f11b7b87f1ed32d60f50b14dbbba2a1ddad. 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/NLQ8D2300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb238d062a1b4654eb35f9fd82642ca010add77e9237164cc44602324b1763d4. 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/NLQ8D2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc517d9f7f94d4169762c3824fbe9c73b87da62b1a1e59b9744def05f98990a. 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/NLQ8D2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968dfd06870d9e828bee2d901fed69a72ba0553c118267b55885513862bec35. 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/NLQ8D2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03836cb15ecbe908ba678861c7aae57d38ddb0edd961947adf9380ee8c57558. 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/NLQ8D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0417559a9657ad692f7b439824fa88f1701fe2183e4d50209d9461ad783f187. 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/QZTRX2286101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209729a8596220259b86d259de2d82c81a111a020dcec1a4319f5faaeec642dc. 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/QZ5FN2206475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e952941148cd3560e61f60594781f571b8edc24c9e357c22f6da3f1b1179b80. 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/QZP7F2150026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc7f649006382e8dc808fe83080e5e9f1f0da488fb7c4cd349005eea2a4b076. 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/NLZ542100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dacd5b3ca948e1cf04b31ec6a159be9d1d8894373dee02f43ad0853944b18c. 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/NLZ542002149.
Coming Up (Hold On) (Tritonia 414) - Dokho Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0027dde11b1250e876bf54743ff0f346d82ebb14178e866236d4142f735479e. 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/GBKQU2313232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb2d40dc0180843f01e18bd2d7a307629f658d63ac5cbdca84f62f5a33ba0e6. 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/DGA092409777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085c3ef234ff77902c1d0765f1938669ec2959ee35ca19f36bfb873b4b225ecd. 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/NLQ8D2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a4198bfb4e8f6e752b74f9458636e9e6310b2e94b0a4bd14dfabe56bd8ca12. 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/NLQ8D2400362.
Revealed Recordings presents ADE Sampler 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399054ff1f89c09ca1c274893c715bdcae62774f9c003546b899f090bd6f69ca. 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/NLQ8D2400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f62f0803145efaa1131ce591e8ec3b78a83ce6145244997fb265acc1eefffb. 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/NLQ8D2400766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d9fc4e21bd8cb0efaea0d2c071f8d91d43a8757e7f70cd5ddcb9b56868f83. 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/NLQ8D2400768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9d4f8733597cc4cce6138c49a136585b62ab53aa8ad892cbb4062013915d54. 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/NLQ8D2400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee88e78e10582d311673db1b300619cc24b7f8e6cf843f06e15a80414012d32. 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/NLQ8D2400772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a225e60caf643eec09199ff550482ff72d3060f3ff51c073cc6ede2039f9fe. 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/NLQ8D2400774.
Move It (with Luciana) [Sam Noton, Alex Mueller, Retrika Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0940b2ef128115ee726a7c5c8477232e753b1eda29cb08769e809255d44f868. 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/NLZ542301854.