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 0xe8238ea8d5436fc2e9a0b2b8c2532601316504565dbde153bd29f573be8df7db. 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/266545cf-b59d-43d5-a978-48617a8446bc.json and https://artists.proofprofile.net/proofs/artist/266545cf-b59d-43d5-a978-48617a8446bc.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 0xe1d05d1fa046c93ec79aa068d216723c8394f048644cc1f75e5e234fd53e9ba7. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USHM20339453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43321168164c871c3519f15d50d8e8ab023921df021f7840f05315b781fd05. 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/USHM20339454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c3653bd92d9ae04abe15d953031d78003c5e1712bdb8318813a4bee4ce2587. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USHM20339455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f097507c551ec61f4f0b3f67fc26f0662b3990c294a09f7e6c20704889c813. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM20339458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24886e183e975388cc9048171227e7cdd3a19bf5e321236e2b93c508c91df1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:17:32Z), 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/USHM20339459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c914ee4c257d6fcaa3b971e7202310d9122928edbb40b32625cc6a37dc4065b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:47Z), 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/USHM20339462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23f25bd5722f30dbb1ee0495605e4c9c2464a78dc89c1ef994e14cc80f73371. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM90422927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb091f84c1bd07b35ce7c13407b8b6abb3d9945d6f0c8b68f3cdcf66877ca7bd. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/USCGJ1216781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f303e05b6c3b57a8a6cff19bf3bfdc6b7b0b01e7c359ebf50503ef5729b23b. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/USCGJ1216782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e260ca0d7b7129347cbf0c80580b59c48359ff9e25052fe519d24dae882591e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGJ1216783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb1971b002ad9ff88b8d352c34f124cc33390adccf154786941573d2e41aaea. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:28Z), 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/USCGJ1216784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625217510a76023c9e5f45abfe4f46c3fe0db63441f452b5abb4be5902e2e845. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGJ1216786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811bc2222d8363bc6438451db4e85bb2cd9e7e987bc02ad171ee0b0ce8b02d0f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:50Z), 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/USCGJ1216787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c3964dc1da91c1088dff6118afd69e444b076380f203bc26fb8d334bf32112. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USCGJ1216788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99c3d861dfd14c840078d0d7b7bf77fb786bdd81596449004c81739cc044cff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1216789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbc671b842bebc6599cd52afde2b2e07b28defccaad59c6fbdbc52a80718791. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USCGJ1216790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d1a34fecf7651d71d1181b6a3b17d33e650c8dfdf967fbb665ac742c9d141. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:34Z), 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/USCGJ1216791.
Heart to Hands: A Solo Piano Retrospective 2002-2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ec8522dd2f2ffa51dbf29b8caf22ac03b68e49c2e8c4df26f74464cb07ec69. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USHM91200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185c5806d5e1e6983652f9534548b47b7527decb4590a0c733fd5a32c3e7628. 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/USHM91200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1eff203626108026c60d3e786fd54729a7157879d3bb0552836ce6d65b59cc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM91200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c046129313ce9011683a0083d17a49d47cd610234a2a61f66996d6f8a8e1ffd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM91200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076690b9dfe6b3be4a57d1661a7dab8f0aa739571e3003aee1bf01d60f239f2d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM91200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ace894e4d7d1918b4632c693a9a1f76babcafc470cb31f65456e57e44d2507. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM9AA1403403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6ec0af2afe2d6ec0f4cedc7237fd8c080115deb1164d0b516316c8ccf8fe7c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM9AA1403404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0d5aa2d782d892e15639510705b177353827d16a92cb60a8b27025da1ef90. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM9AA1403406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe382e4eb72d4be8ba472326f98cca870b6e6a3bef45ecb00f8a7e9d51ce5137. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM9AA1403408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8c48fe9b4d199743f29359a4fed74c79de7466f55b6a2af0035e92352c29fa. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:26:35Z), 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/QM9AA1403409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0403746fcda3d7dd922d693d17f8db9a8fe5d8c09dd116b04a34638e2fb66a0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM9AA1403411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea11886aa810c2d2fce1457dae6fa13faf9fd4cb0782e75ebe60386fde78672. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:07Z), 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/QM9AA1403413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb2de37ce277b9c03d6fa7dd51e8fac7fe7f81a0c216c82d40c38692326e56f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM21676293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ed75773bf8c2960ea393c7f28d986aaa5816f21f47a5fa7d785ecfc00d4a18. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:53Z), 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/USHM21676294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40ccb185a7397887f4e3e1783973fd477af3efba7ccaa629282b5a823e7f446. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM21676296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df45f50da9990555093527471ec7d8ac7062e0da06620580707abd88051e9ae. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM21676297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596afbe0722034ee3567012443c8773d74e03c5cb6d6bcd597a7fb6ed4943d01. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:19Z), 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/USHM21676299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75ec5f98309a54339c0c0bd6c03b71d514421b65d1d417198c1db417263af35. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21676302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584e06fff85dc1967dab4b0ca3fe58da51afdc1c8a4944041c3500eb830f46ad. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:18:41Z), 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/USHM21676304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1545ce000cc57334f838206fe04d62bdc5b4d8e06fe31c188001979f69782c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21676305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ff7428714c1c9e165c26b9a7e3ed9f352e60fa785a8f3ad2b7f61208ea70d0. 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/USHM21676306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298628c535db175ad7abb32e284a6120afdbc38eccde1ce9d8b8aeef1ef2a87d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM21676307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c89a33c2866d803b595d41f4f0e216090fe05920cb2904b86ed8075053e9a4. 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/QM9AA1468081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e20b133e2ead51b669bac941a070c7c73410f7a706e9f1d499db761f41026d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCABJ1258190.