Richard Desjardins (born March 16, 1948) is a Québécois folk singer and film director. Career Desjardins and his friends formed the country rock ensemble Abbitibbi in the 1970s; Desjardins played pia
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 0x1f351e93748ccb3b064cc681c48b81f36b7491d093adbe369e5519c000254788. 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/d9d2da90-b747-483f-85d1-34c679c377b9.json and https://artists.proofprofile.net/proofs/artist/d9d2da90-b747-483f-85d1-34c679c377b9.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 0x45f8f3f5679ec00cae64f57a924a3c0e6fce17b8f9f638b9ab3bf0136f6c18c9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CAZ700907352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eb18c5b12ba273aad488735ff6e53c76f816f9b4864c0cea58b2133fa53d23. 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/CAZ700907356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15afc2c893d7a33febfac95fef63df3ee171b79655a983424b63ff2c67878f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CAZ700907357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a66b85d926c5047a438b26d5dec0f2e6e58203094c133e87c76644142ef3ff6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAZ700907416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b8a022e6b6fd12ea148cf23d4defb9ca099211745b8687b7ae28ccc1ff83f0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CAZ700907418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4b216e40081aa3ca94cc7ac266d4ea5b13afc8ce17881d84672b5809035ad. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAZ700907419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39fa093b3614d9f26f44d4d4f3d134d5147f703e06c140165c7228c466f9cbc. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:50:43Z), 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/CAZ700907421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29dad4942c805287693994020a0d52e93f1099f1721ea292b63e5c14a2311ac. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:35Z), 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/CAZ700907423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32c449f2ef9d451795dbf426217f527414b84200679c9fbcbe1548ef52907ec. 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/CAZ700907400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a0d48517960951e8de7b514620c2c2f77f7dad5612d0676556655df229332a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAZ700907402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b22f2a994245e435aac13f2bbcdde785ff6d790bb66d57339af7ef6884f19b. 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/CAZ700907404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5221c6eec2f9fc0d9b37e56d933c24fa262cb72fbbe71101094dbcbc5b465c2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CAZ700907405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312fe0d6b7871f759d45c7091a5f8276d0ecc02200d43bc3eefb21b871de568e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:23Z), 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/CAZ700907406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e6072e2eaefaa987bf1494b4b6e3afe4bd216da3a2ae2d6bee83339d1cb981. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CAZ700907408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955cb309046d7e5d14e42abf5bcb24dd5c3d046d548a992c90373e33b46e0e9a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:23:34Z), 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/CAZ700907409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7618d15e2194524cbdb04925355ef62b78ef6a3c8050c8d032f4eb5c360077. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CAZ700907410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc722fac30f337a56719e6ba1466a062b9e0804508268b5b06028c5131bd49e10. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/CAZ700907411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a158609e0d902b731a6d60ba5b5bc6931ccd63227b578c1d6305707d9b5e0. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:08Z), 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/CAZ700907412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6395464b554588d983d848c173391d3ae2fa036c3411c06140c303f33b206702. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAZ700907415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dcfa33a7990037edfb0c2aefffebff447901c62248a103441bf361c6d90b28. 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/CAZ700907399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49001897f254b8d968ff3d5296493c7043a04d37ecf601ac825d2a22c43946c0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CAZ700907407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576a7f6b91ebc6eaef71760dd2a7ce6a9bc98d8ecc44530147d21203360c610. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAZ700907360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed103893dc794ab7a2644d2516b697048684f237319c981031836ee7ba31c2e5. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:44:34Z), 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/CAZ700907361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdd3a30ffe22e40c24d62aaf00fbc5abf352210bdc8a4b172002a8c101b5b0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CAZ700907367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d64216428cb671d62678053146ae433a6f4c6234a26494c15314f62ed75b7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CAZ700907368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576a7f6b91ebc6eaef71760dd2a7ce6a9bc98d8ecc44530147d21203360c610. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAZ700907360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d64216428cb671d62678053146ae433a6f4c6234a26494c15314f62ed75b7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CAZ700907368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046863b47bd70a3b30b0dd3ae282447c42956f00a30856031ae21a577b6f4a7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAZ700907322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7000b6511e8a9f0a273ca44807c5027ac3a4acab0323efe23c88f8b0befc7ca. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:49Z), 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/CAZ700907323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221e751a415b3fc46c8ee83e3f95202093d71bc178b34a56d0b7aaf16c244696. 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/CAZ700907326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe6f5f77ba8d3b2309089829935cc4fcc597f86aa421110ba9d581766526fe9. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/CAZ700907327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ad5c076e33f98293d471bfedd8c38f6629aa43f91e793cbb237e708ed0d12c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:37Z), 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/CAZ700907329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee9476e1f0d4e76c31fb0ae50bf1ee1d86beb0da8fc9b6f881de70205fab200. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:10Z), 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/CAZ700907331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f3c5e1e3129a464d29550025943690465058827bc2a487f4486eba046599e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAZ700907334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2380ae9fd8620a691fa35ae5c466a1e2eface8e934b52bbb5522aaa9db45c015. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAZ700907336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046863b47bd70a3b30b0dd3ae282447c42956f00a30856031ae21a577b6f4a7e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAZ700907322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221e751a415b3fc46c8ee83e3f95202093d71bc178b34a56d0b7aaf16c244696. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAZ700907326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ad5c076e33f98293d471bfedd8c38f6629aa43f91e793cbb237e708ed0d12c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAZ700907329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f3c5e1e3129a464d29550025943690465058827bc2a487f4486eba046599e1. 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/CAZ700907334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa195004003a6b9891cc80e20882828127cf434ab3e209c9701c98310ed8f8ca5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAZ700907337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d7f22d42a2eabd82eec628594a13881ae84f4605f78e567c4e1facf0ee8b8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:48:10Z), 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/CAZ700907338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a52d17ab05755bd8160ba63cf210fb9a09d37a5dc7cb25e5c5f20c69b651. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAZ700907340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf43ca2829f5f8d4ffd16e8e9e51148b592583bd406c39e0353d4d119483b0c5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CAZ700907341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2341d504d01fe36ed678f076114ddc876379ee956f510a88688da7de3cbd353. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAZ700907342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbac76fa56ed84e4468aad9115df8681e8cb2ee09ed5de2eb2259d2be8214d6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAZ700907343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6501225dc627ac8d5270fefaca928aee56a66ddb8cb498fe896aeb53944aed. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:40:59Z), 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/CAZ700907345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250b5b1036d9a07914cea712957dc2abf732c919341238c37c9d718c0cb08151. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:50Z), 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/CAZ700907346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37930da34beffc057b5efd2f7336a5940f58ac1e5c4dfcf44c964ce878a13680. 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/CAZ700907348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469dd3725d392af25277324cf86720d93a2276c3d16b82a544a93bca424dc10. 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/CAZ700907349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc491ff8917f0f6f8925716b2d23b033b29c188d41fceb9755a1a3d12217c41. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAZ700907339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a52d17ab05755bd8160ba63cf210fb9a09d37a5dc7cb25e5c5f20c69b651. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CAZ700907340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2341d504d01fe36ed678f076114ddc876379ee956f510a88688da7de3cbd353. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CAZ700907342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbac76fa56ed84e4468aad9115df8681e8cb2ee09ed5de2eb2259d2be8214d6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CAZ700907343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469dd3725d392af25277324cf86720d93a2276c3d16b82a544a93bca424dc10. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAZ700907349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0866401a7b860f8e4203af54aba4655818617dcac88306759ffcb3405a0a1ea2. 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/CAZ700300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa68e4a03cab4fb54ce1d2412b2cf541cdc4552e0eeda72a7a0a724f5516c6e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAZ700300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87764f02a43a10bc8964c9eec1333a60b38c610b4b15722e327c676641759174. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAZ700300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9db629bfd4b53487742b4ba80246150a84f9247a08735405297ecefb1bc388d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:44:50Z), 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/CAZ700300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5efc1d48fdd894bad695e656c7a4bd2b2954cf809904d6138690afead4903. 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/CAF541110103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdab95ac0b70e8f6d2349c93bcafe3eb8b303631d375dbde975bdd8f4685112. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAF541110104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf476050db29fb222882804048d45553e04131c4125109d1bff7422d08891cdf0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAF541110106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4ca6af40b233e24f1a354efde587edbdc162fa57a393b2400ceb09c52cbdb. 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/CAF541110111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26aad9065c735adfd322bbc5bc94054755cf8d72bb2bea9f1ad6273932843ba. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CAF541110112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf237c2ce56b8bd2735d46ebd3bb47f4727236be274aa3218bf9049da311377b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAI601207003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ccff81a389311f6162a0834f6cc4e28dae25b7875cc1a78fde5f9c92705b91. 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/CAF420600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d839d8c34e2199b2f335c455d1f013cc4d55d4ffddd85e9c79f1ad2e149f2. 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/CAF701070302.
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