1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8c31096647cc3f6d7d68d486d2954b850220cb932231c1ff270fcdc8b7237c37. 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/624d6aa2-ce24-4389-a318-d1592ae40cc4.json and https://artists.proofprofile.net/proofs/artist/624d6aa2-ce24-4389-a318-d1592ae40cc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Long Gradus (choir & electronics): Part I
Long Gradus (choir & electronics): Part 2
Long Gradus (choir & electronics): Part 3
Long Gradus (choir & electronics): Part 4
{"copyright_id":"0x3b9f2bd2214d000f30c844bf8b1794a13184ff1bf1ad1d463f0e99d42bad15b1","isrc":"GB5P59700122","name":"A Woman Escapes Cue 4","registered_at":"2026-06-20T02:54:40Z","spotify_id":"74LZ5NilKIbI1Xf9eMpuXz","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9f2bd2214d000f30c844bf8b1794a13184ff1bf1ad1d463f0e99d42bad15b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/74LZ5NilKIbI1Xf9eMpuXz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/74LZ5NilKIbI1Xf9eMpuXz.
{"copyright_id":"0xc090e1cdfce5ac54c6158222920f97a5df6acb389d4aa7d3378a878a9cb0cc1a","isrc":"GB5P59700124","name":"Composition Of Flowers (Excerpt)","registered_at":"2026-06-22T17:14:16Z","spotify_id":"6549zuUYGC6SKeIdaKzwgZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090e1cdfce5ac54c6158222920f97a5df6acb389d4aa7d3378a878a9cb0cc1a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6549zuUYGC6SKeIdaKzwgZ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6549zuUYGC6SKeIdaKzwgZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2351a11830923eca85420407da60d969f08dbca11e6485c0ffc40a62c759ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ZiWBNUTVENWMTDxRGU32n.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3ZiWBNUTVENWMTDxRGU32n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c5809d721a0d4eb5dc7fcf9ee378f8be83f1901e32d1b15a4c2e48c6807379. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3aB0w0rR1PFVhTNb5U2ulQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3aB0w0rR1PFVhTNb5U2ulQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b5fbb51bcb910a6441f620e7df466e5a110a4148131f465351dc0d6c3347bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/42qu6wgU5RB2cYdOQES8nf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/42qu6wgU5RB2cYdOQES8nf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c2b55a47f35b5bca47c4f7df0b31701f314d8402f0cc35882964097fe72e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/07qI32Eu5hhWx54YOaxE1K.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/07qI32Eu5hhWx54YOaxE1K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d3188fd5bbdb6674e84a732999e8b3a780ca50b38fbe8b7e30938c3c182cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7KI9Y4uRThUiQSuRMunzLL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7KI9Y4uRThUiQSuRMunzLL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ba5c01bb6215d891a72810f883636bd341e1fa77ca7c3871b93bfc80a37e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/77ERu7OislswKH6T8xbrRv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/77ERu7OislswKH6T8xbrRv.
{"copyright_id":"0xc9bd367ee32aaa883855daa1dce0cd945ddc5488fb97f1d06b38e006bf7e6337","isrc":"GB5P52100095","name":"First Cadence","registered_at":"2026-06-21T19:39:14Z","spotify_id":"43QYCVq3fRBVKRkUTgp0LO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd367ee32aaa883855daa1dce0cd945ddc5488fb97f1d06b38e006bf7e6337. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/43QYCVq3fRBVKRkUTgp0LO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/43QYCVq3fRBVKRkUTgp0LO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d09b1fd6bccbf29bbabe714dbc196dd3857566f03b827ef31f3d554393449. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5m2Tets6QqS5IMuL0v8pf4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5m2Tets6QqS5IMuL0v8pf4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc68b6a070bf658c3ee9255f9e3b688708eb0f280845a775c99cf203559b4fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0A4DJqR3hcPzm0VUEqw2S1.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0A4DJqR3hcPzm0VUEqw2S1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156cbff78c19754f753dea5f3953985b8c3385cf4641b18e7651fd3e87e15c52. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6w3dIJns7QINp5VbTBtAsw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6w3dIJns7QINp5VbTBtAsw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fb6a137b48390f76a8359ea68f5e39de67a262b8f7641abb6c4300241e357b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6j2WzsvrDBUkyH08pO376N.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6j2WzsvrDBUkyH08pO376N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94afae183398b9e1af9749c08388148e0c37c21da44f0733fe3e78358dd10c30. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3hYcVIhUcOIp5IoYQjPLn6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3hYcVIhUcOIp5IoYQjPLn6.
{"copyright_id":"0x9a19d94fec1f070c8ed6c28431191cbcaaea164b7e7f4f6ec1c22aae1ca01e3f","isrc":"GB5P52000351","name":"Diaphonia Basilica - version","registered_at":"2026-06-26T12:50:15Z","spotify_id":"5IpF5wOrZIGbb6p6VERzIw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a19d94fec1f070c8ed6c28431191cbcaaea164b7e7f4f6ec1c22aae1ca01e3f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IpF5wOrZIGbb6p6VERzIw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5IpF5wOrZIGbb6p6VERzIw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a953cc480f5a84881fb4a97e99f4f4c1f3a2c913a35fe13af17735a4ea1cab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7reAsh7MufMKqphiz0qcz7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7reAsh7MufMKqphiz0qcz7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8756f1844cfb4d2e8f175fedcf547c03d1fbe32d8a71e5ec08cc1b5c0b001f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/15FF7DLqDrDgYaKALJV9G2.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/15FF7DLqDrDgYaKALJV9G2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff832c119f4853175430a2ae95d2a561e6a726503645758797ec48f7dcf451cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0weFBFAH6wOAJuwSqPkAsB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0weFBFAH6wOAJuwSqPkAsB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab043b8d86523a5a999b2b5f8ea68b0ef249a32a66734998d33b5e418b7c8ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0xtJvcniZ7aQmKFOikkh84.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0xtJvcniZ7aQmKFOikkh84.
If It Pleased Me To Appear To You Wrapped In This Drapery
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa88d20be18768a7338763dbaf2decb737fcb69be3534387025a469b772d150. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ZXjVbxWCnBmhNRVP1RbdK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4ZXjVbxWCnBmhNRVP1RbdK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8b3ec1ccaa938e89b583d855def5d533867f093e3e99251079470d2e05a358. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4TS7ZKYI9duQujtVglF2Cb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4TS7ZKYI9duQujtVglF2Cb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df895a644e32134e4da0d0cd70d2c4967a0fd3dc117c9e08fd7a51c1d47769. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0cSdWJzO18liElNMCAYCig.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0cSdWJzO18liElNMCAYCig.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7598ffec2a73c94a1598be219acfe5367546a7e808e741166c5c99fe59a6a08f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1iLJV5tiJClACgW4ZYrPCm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1iLJV5tiJClACgW4ZYrPCm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8964f62c776e82540c53f292c0712cc7a9a02011ed45eca9ac8a974d2e94a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7xTlwBb8YH33thmXs2hFvV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7xTlwBb8YH33thmXs2hFvV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bffd3655c9f995ca021817827d33ffe81539a65f9fe9e30f3d3d0ef13b11ac4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Af8CpB71whYRZJpKILu90.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Af8CpB71whYRZJpKILu90.
For Harpsichord / For Pipe Organ And String Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11bbe42e61c5b82b633b6543e3ab73463eb98dd85ecc1731282a2f70047e31e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3LYVjFvNCTWVyixNT5mS5e.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3LYVjFvNCTWVyixNT5mS5e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074a35db5eb8a8d8587b927a88efc45cdae8822e5558d77759b6535187682b2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Yaz0sGAAYLDbORbe7BIWO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Yaz0sGAAYLDbORbe7BIWO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acaa3a6dcbbc34f90268a2c9c03222dc01ff774b5264d62135ab56fbf62754b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7hPNy1PpTSt5ziByxjSaED.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7hPNy1PpTSt5ziByxjSaED.
{"copyright_id":"0xc090e1cdfce5ac54c6158222920f97a5df6acb389d4aa7d3378a878a9cb0cc1a","isrc":"GB5P59700124","name":"Composition Of Flowers (Excerpt)","registered_at":"2026-06-22T17:14:16Z","spotify_id":"3eqkIhwmWM28gh0LEH4a88","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090e1cdfce5ac54c6158222920f97a5df6acb389d4aa7d3378a878a9cb0cc1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3eqkIhwmWM28gh0LEH4a88.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3eqkIhwmWM28gh0LEH4a88.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7371e0cd85e8ca67e22a74865cef1e0b0e922269aaf0701757e26ff48dd16588. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2RRxlmFKyhLBCcbXumCIkW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2RRxlmFKyhLBCcbXumCIkW.