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 0x5f20390f65f714bca7e73498dd1a902797396052c5c3df954e4f2ca2e9e09382. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/401dcc09-c287-4289-91f3-b1f7e50e7a4a.json and https://artists.proofprofile.net/proofs/artist/401dcc09-c287-4289-91f3-b1f7e50e7a4a.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 0xb9fc2c61e5fb3ebaf9a5bae95e2eab055b7675153d01c22cc6c5cae74c1efb9b. 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/CH5170500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcf7217671d4819383a2e59aca0e73d313c7b7b1eb722ae46fc62f2fd242b39. 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/CH5170500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a1eb67778b700562ed163d73d2a4fc9b8defb4c7eac223d2a8403d83192a6. 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/CH5170500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a0a656b04c86691511706a4c74ea8393c5d1492e132732cf34e33434fea44. 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/CH5170500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878240bf289af0cd0beb363c329154f54d9f9d0960b47a394ff974bb97accf96. 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/CH5170500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177da45fcc10793e280492336de4b4d337656f8395a59970ea372dfa2f65767. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH5170500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a30d8abe73a7367ce8b8a95306f940a5b9cc26ecc055ce27bf4746eabbcb8ca. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CH5170500167.
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 0x3975ab72c218f8bcc3aa9f1bc9bf4f61d16a381e9e0b09d5846bbf9b91d33688. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH5170500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833bc2d9f531661958f65766731cce27c971a87042277af3953cb2c2d06887b0. 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/CH5170500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277eb3ccc16db6d962aeac109280dfe83b3aff05c27607c8f718844ff0a7566. 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/CH5170500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a449523e01a8aadf4bd1f1a6d325a9e985ad56ce35202eddf25612b5d885c8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH5170500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff296362f383b464a1e111f3cc7ce70f048d28aff8a93c41b1725e763176a2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CH5170500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4855b495ad6a71259eff39509a63b47a4e86eac6be0cc609f7391707a6bba938. 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/CH5170500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc897f55c136ed01a62da67e6d6dd8bd759298368b07090ddd9590a785257b322. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/CH5170500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e60ef26a8f2df478596ab7e5dc55889ae844a05e0634fabb5c97b7b658cdb79. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CH5170500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6661664e55e985e2bed4c86ee68c55bcc3094721b6b9d3bd871e2a9f18d63b. 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/CH5170500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b24f468946cfcf406dd4a321e1f7d40f43c98c0b76c5aa9559b49135c0011. 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/CH7811815577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a17aa6ed1440bd63d39fc441e8a62bf4bf66b675dd0054c722b99bbf441024. 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/CH7811815578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1b011108fae7ac7d90e6ddcb23969e53d75515fdf43caa29fd5f83e5873f4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH7811815579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495469404128edcdf933b63c1e83d4f3a65eb60024d1d2dbca54ec3dda434f1. 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/CH7811815582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3090b9f667017c8c02d4bb191d5e0371a36e14bbaf6d04667022c4da1135a5. 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/CH7811815584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675236c7fadc6604e7fa07524d38d4e1ddd3c01dff8bcf74abc37ad473043a12. 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/CH7811815585.
Dune ade Langstrass (feat. Tinguely dä Chnächt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978d71a543101dee08b23afc90272c6e8556366792bb0632d3dd1c81fa1e4a82. 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/CH7811815586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0afac8278c17c6c51456277b723dbbeca1f4eec254c3b9669c70dbfa21dc72. 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/CH7811815591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49a041baefc3214d257240f6308613bf295cdb21f0cda867286cfef82c524e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:57Z), 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/CH7811815580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c11b5619043cf9960c294f892eb2fb9f7d91300eeb02111e939bed0e4ba3e6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CH7811815587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d3b8dbd69114fe019d3574933763831c0f93ee465b87b5749ecbdb22460c20. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH7811815581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378835c422204693e1ab700b43d6ad7246d86845c9f86edf71704e5ddd97c0e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CH7811815583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f842e6834356e175b32ace9c27192bfb1e4f23f7c825355d813b794c388ab. 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/CH7811815588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9606295e00b78cabe4986d3da56313d432b86ee07e3c147ecccae09c995e80. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH7811815590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a9ddbc69def7b2317b2e2c59df121548378ec779ca8e064ae7164b9e43c8f6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CH7811815592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253d7512b2a5cc1e4cfebf43303240ee537b853f2a702d57b986641e603294c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHC381700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf213e8f5fa92e653abd7eb575d82127728b820a6d3d138b7f3490785692163. 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/CHC381700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c243b0460eb4cf622f2d7f5730a01b594425ae9e4c0b15bd2b8597b237b7149. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHC381700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc757b97729eebe5678909c63c6d7245a0c469acf698c54413474521abc4648c8. 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/CH7812222098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21505273c04659051c5f913c66232b79623fdfe527b06c00e7e075f6c70b32f6. 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/CH7812222100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6661f4cbc733aa3d8bc3933d3b710547bc7d7d5bc9151952d8042acbf968ef5f. 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/CH7812222102.