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 0x4bb4b114155835256c219e2c85a28ae7c2a337798c41cc09e542f055ec6bf0d5. 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/a65f0a20-be4e-4a80-ba9d-9ea4a0d1064f.json and https://artists.proofprofile.net/proofs/artist/a65f0a20-be4e-4a80-ba9d-9ea4a0d1064f.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 0xc397d32ad3773bdaf5369968ab1ed73741427052a1b66d7824a6d38c59f706da. 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/USAT21500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3919a9d5e177960357b3b220c4c53c9cfdc6191f544d4840c4c7f69f341a043. 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/USAT21500549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40121136187f4481974c5217b73c2845ad23b9d1cad65373283525c72d40c3b8. 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/USAT21404296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82721ad4211e637f08996edd4fa4436351440f2c16c119112b6cefab8187a567. 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/USAT21500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5e2514af464a33a0f9f461a0e3ff2a979d0d87850708b3e19a518febeace0. 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/USAT21500551.
Jungle Bae (feat. Bunji Garlin & MX Prime)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13da125ed2e888b250c50914963353574a1e0182dbe8515fdd7f687055d9b6d9. 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/USAT21500552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b7d9ce240367f2c0ee146ac316d7a5dc062b7ace8e9be04130263d9808aa9. 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/USAT21500553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b3e17a907a79c5f22162cdb3d274bf7104650645e22078df2e6d57302a56a. 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/USAT21500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60d07fc693ff49090dcd2bfa1ae890d82e6e3dea51f1d74c69d4fd7b3a91a88. 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/USAT21500555.
Take Ü There (feat. Kiesza) - Missy Elliott Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21680266c6263394c10a8e6863e008624cb0fa4aca450111fed45ad8b859f66b. 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/USAT21500506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982b895d72192a5440b742c151db136922f763d1eb49a556cb676b4b49b39f4b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USAT21602228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b112947012cb1db33bbc01e0f9126603bfb11e20853fd016f2de20e85ba725. 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/USAT21602229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34870bf4092bece21da0d274f96528cf42ffb1fb9e107ea0b7ad718b9cd243d. 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/USAT21602230.
Mind (feat. Kai) - Basecamp & Mark Johns Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143e1ccf5c8e4d7486dd41f768545b38cb1caaf615563495f4f244a3659bbe8. 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/USAT21602231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8591a5cce1e57dddce0616938ef7134e179d01e5151f5b3d26ea5f0a1f76d01b. 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/USAT21602232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c51b46ec325b648c8906e16531ad05fb750f5e7f4afad4208372dba22ce90f2. 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/USAT21602233.
Where Are Ü Now Live (with Justin Bieber)
Where Are Ü Now LIVE (with Justin Bieber)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae302b2543c9091d35f6c3dd043c6ddc90bda6e27250c9e1b3b7f304ebd58b2. 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/USAT21600607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb343fe7c2ad626b794e68b5f3f9fd805e2f71650c7c5a4f32168389dfd30b515. 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/USAT21503535.
To Ü (feat. AlunaGeorge) - Armand Van Helden Hype Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977fc6651000756ccb347a3ea288ddc5b3f71013f2a75ed9f0ffe392b833d955. 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/USAT21503536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f17e25ca5daafd02e995986bef5b19121b0939e7b944f89ee8fb59addd345f. 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/USAT21503537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e4fdee6652c645254dad80a5d2e856aae56984d71c8938f6b137e9f876bd5. 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/USAT21503538.
Where Are Ü Now (with Justin Bieber) [Remixes]
Where Are Ü Now (with Justin Bieber) - Kaskade Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3147bff48e2964294e2d64beaeb4b686daadd3c18b622578504cfdeb85182403. 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/USAT21501746.
Where Are Ü Now (with Justin Bieber) - Rustie Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2726d964ddbdba54cce985adcf4d884251dc3cf6a74cbd33aa844c92d5dbf81d. 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/USAT21501747.
Where Are Ü Now (with Justin Bieber) - Marshmello Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c314ffd789c366f50492905d683a4bc9145b31121c5f509a0962541ad741a29. 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/USAT21501748.
Where Are Ü Now (with Justin Bieber) - Ember Island Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadfc6fec14741d9877ab5eef5419d7a344727d2e010698f4fbe01722b27910. 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/USAT21501749.
Take Ü There (feat. Kiesza) [Missy Elliott Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21680266c6263394c10a8e6863e008624cb0fa4aca450111fed45ad8b859f66b. 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/USAT21500506.
Take Ü There (feat. Kiesza) - Zeds Dead Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47f0bd207a63cbb7ae6728fbddeb50d3f8e72b4bd3e9afad896bc5fc33a24c8. 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/USAT21405316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2860f5b9b37d12fc0062097b6eef9c913536f62ae272d992259bb173cf8da414. 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/USAT21405317.
Take Ü There (feat. Kiesza) - Vindata Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd2644a314d920a095d6da5caa23e6fd44aba32478ade94dbf872423ce9f5f6. 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/USAT21405318.
Take Ü There (feat. Kiesza) - Netsky Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07067206fa9cabcfefe37faa93e38c25bae1c1c71c12164b110cf8986ca14bfe. 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/USAT21405319.
Take Ü There (feat. Kiesza) - Felix Cartal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f578e84426ce8e8e342b33379d2e727cea9a88144924bfeddeb5ac001383e3. 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/USAT21405320.
Take Ü There (feat. Kiesza) - Tujamo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692ef964c771ab77b81870708614b9da272f31ac8faa3d9d1b9cdf776b00becc. 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/USAT21405321.
Take Ü There (feat. Kiesza) - Tchami Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644457f4248fcd28891dfd5bda76189ff950b4b7d98aa83a46e0769181fd7771. 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/USAT21405322.