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 0xea483f903b51130867310c44f243c0928f0b0c7bc544c58f173c7c8cbe50945e. 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/5a8d742c-b380-4937-a378-1a93c5ee513c.json and https://artists.proofprofile.net/proofs/artist/5a8d742c-b380-4937-a378-1a93c5ee513c.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 0x8b6936df319891453809a0b1501a5e6f2c27658f7b82bf6e2d1b7efed99974a4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BEAA10201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc5932bcddaa6776b39d73cc18d03760d90468e5925d1f11f02259bca83b72. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLE800300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5077cca02fb103506f86bd674ca5c510e784e88992f557212b5634265fcb7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB0581400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8ed6047ccd51df6e6cc5c6d0bf7b2c191e68087322e00c6afd82f199852cc1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GB0581400088.
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
High Contrast presents Marcel Woods album sampler
Don't Tar Me With The Same Brush / Get The Kleenex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fcdf12ec71210fbb6201b718ee7fcb89a6cf2123cbe61c91d9ff2ce1ef6235. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/NLM070700034.
Musical Madness by Marcel Woods (Album Sampler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b7e105ea182fd2add9788b283650fb72e11c836a6965e90608da64a9be0c53. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:50:44Z), 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/NLDD60900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a925e670cf4f47a81192d51c8bf942da98118fd5ab943ec3fe9662dd66aa43. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NLDD60900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1987851823097725ac394952925304ba68de2ec64a895ec58bbccb2b70ac8a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:36Z), 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/NLDD61100096.
Lemon Tree / Time Is Running Out (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cf950ff53253bb9c98a44e8b3f7a376b883d683f29029fb0a6094d0e54d87c. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/NLS241201465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735b3541d1ab7e93e8a6e1cbf0f9b2b2a2d3e43f39c4e77fb371f5ad213cd03. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLE801500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98748aca04b86d1c1b22a3b9e883859ad4adadce6df0dffe240a0b4f18663683. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLE801500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b037e8749385646ac90bbbcd3c5802aa9fdd8ca0033a0a4270831d47a235a1c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLE802500015.
Club Life - Volume One Las Vegas (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601dcd03f505d153d3d771027fa5ac8704d1760a25f73bb4f578e07b2c5e2f18. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CYA111100018.
Club Life - Volume One Las Vegas (Continuous DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb787b531d1edbf8ed0e2dd5dd4c6b1d878ff7d1c60c2a4e8a9d2fc87d922a6a0. 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/CYA111100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5beb1db8eb92ef04eef5f7ca730c89ffbee2e5f9f4896209541714ccf069af. 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/NLS761100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50607d78574ab8f2a88e8e3d49c1581a8bd82a255fd844d891a76b8f9da4222f. 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/NLE802100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d713a9ab794676168682306a9a6ac7572c6bccf6454894f7901f0912d5aa7bb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLS241202196.
All Rights Reserved (Continuous DJ Mix By George Acosta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbc7cbc864801e02da7d8782308a4d2ad4e10e0073347f9d24edd0fa3bb39b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZ41010589.
Armin van Buuren live at Tomorrowland 2023 (Freedom Stage) [Highlights]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1f76a37463b340e9147c5f8535a116910f44f7539b07b5d46b287333f9a4a0. 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/NLF712306277.
A State Of Trance Episode 229 (Year Mix 2005)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eb9b8beac0496fd09324144500509ba70f1f224c978dea21ea38c674196ea1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLF711313700.