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 0x17f82e3357b70b8146fb9ce4d6566f85cd4b9bfddddefec00ed8db97cb4ac930. 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/19f26edc-8453-49e3-9537-40a87f31d421.json and https://artists.proofprofile.net/proofs/artist/19f26edc-8453-49e3-9537-40a87f31d421.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 0x8715e0c1bb598663fa6577ae90291e6b44b45d35790fb7099fa78d1c8d5b9397. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMEQ2241006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96417b30add1eb68646163acad363d5d3b2895e698f66985e379eeee278bf76c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZRP42207009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512033901d494f2e82f7addbd47dc4461128cfc0f33cef1f8ca628f04605240. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBRX32010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a41448310fdd449fac25026db2d94f9609d8a9266e581b36228ff1c5c4855ff. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBRX32010031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecae2f11e7bf1a3a68ab3979ef40803db783e53825058973f329f8fa1f45c529. 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/QZMEQ2485887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b326acce01e5c71449cd3d3c5258b102b324944131af674fb6e77d360f7d36. 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/QZNWU2413018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d82ceffbe89120e134da5e2e118e5d0a139ee81c8c46a7535067de756a929. 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/QZHN62430138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1737bcd2bdc140874779a8a9b784ea7fee8a925ff5fdf4170d05703348ee709. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZES52475254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630f5e8eb50682e32ed9186b1177d816607fc077dce98e09eb00a7f3ec4a21bf. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES52475307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3341f54d4c12dca8528cc8b71d7763aa5354a987bad488c938f5d201f1871c6a. 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/QZFZ62478136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56729a8440b3c81899eaf5217acf02ac22fbb904c5c6e71b05bd9eb763c506a1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNWY2355168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6861a722bab56d6e14321e11921bb498c5f8b4ea890b9ff0096b026bc9a807b. 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/QZNWY2348815.
Don't fall in love with me (Wilson Remix)
Don't fall in love with me - Wilson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077229c86fee9aa05e2ee867ef408601c54d25d41bb309f87421d322b23f588b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZES92360696.
Don't fall in love with me (Rawdolff Remix)
Don't fall in love with me - Rawdolff Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0557ed9bee89b979fd7458ef8a8dae6d578e3a584904f212bc33b430f7486. 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/QZES92325806.
Don't fall in love with me (Rawdolff Remix Dub)
Don't fall in love with me - Rawdolff Remix Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b44d340c09bda4ec05b5b39c389748989e9f6d735b0293dfa4fb64a09e87e28. 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/QZES92317772.
Don't fall in love with me (Bolier Remix)
Don't fall in love with me - Bolier Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426c4333606d2945536e63440e398e942cd40fd80c310b3b5c1b270adae13856. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZES92316359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e78cefb0524c78a161d74b13701c81d13b8605d889c900dbf76207dc84fbced. 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/QZTB82220326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd13111b8e80c253f58527b8f17ffb70ff931026c85a5872d8b280a92c7291. 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/QZTB92252575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18661ddebe3702bee6f62186fc02b0368db7d21be3f8029a2d0b292f7e9c05. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTB92254426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb6d75fec5f3f644e57a789920c4607ff7b2c57f32add2d9cd3a05d558386b3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZTB92254400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0fd891c694589351469054b60210f0ec6a3aab3b21e70b5d26c2a090864704. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZRP42211759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c3ff8747bd4c96c356f1d8e324c3ea760b547064121baaf62aceced91c1fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZRP52283120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8715e0c1bb598663fa6577ae90291e6b44b45d35790fb7099fa78d1c8d5b9397. 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/QZMEQ2241006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a38691c3b45cf50a3fd778966a040e66c3b21de05eabed031ab655dad0bf53. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZES62216207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512033901d494f2e82f7addbd47dc4461128cfc0f33cef1f8ca628f04605240. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBRX32010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba57d084b048bdfce831f12433636cb6fb4d67064d63691d77bf6c4957f9bdfc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBRX31910017.