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 0xd428f6264a919654309e48445fcb53e8ea4de75712fd16036a35900557e2d040. 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/59f1c564-f609-4ca1-849a-6ec7c7cade5a.json and https://artists.proofprofile.net/proofs/artist/59f1c564-f609-4ca1-849a-6ec7c7cade5a.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 0x610fc0f2eefc26c00b17e18fc68a428cd3781476b1b3a42e10aa916dc5cc9549. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAIQ2443791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02f906a3ba6cef5a3660d00b910ecb1947c110c548127c921605abc69030503. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAIR2443793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77cc0f950901d3645fbe6de0b71bedb36f9b1412ee421dde838943026f3dd2a. 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/TCAIR2443796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe037097b8f1c89bf6232160fa496266bacb4b1ae7bf9f2a230cd66e19f6b7587. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAIR2443801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f84f2e8e0815ba93810f357905d4012e4f8cd5f2be9e03c074e412d7174db. 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/TCAIR2443803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7a11bb0628901d54f145c0afa0ded38d46473581c456d1c04155ca54ac7d3a. 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/TCAIQ2443805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db9a4b1c8b637a62de7f918b8210ff8673bf0943d5f8aeda3c33197e59c438. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIQ2443810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e16f3e0aae1d755d3fb7396c66c9b29253240c0bc9b08213904106ab6b0fba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIU2419100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b9e0e2b4342d80043b0844107545fe76383bb4ec5016c4accaf3a2b4fef55. 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/TCAIU2419104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead5f925bdc91e3fab15f157c0ac17622145ba60742bd3514e2ec7be21d4bcf3. 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/TCAIU2419108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e19798da82d5f5dbcad140387a3996904beccb0b6bcc6343b3d22d5a3f1c671. 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/TCAIU2419110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bea36a92fda95cba6ef9837716aa3d346ae4d7d5bf862426c6eca4daebde20. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIU2419116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c138e8aadce445ca54f8ceb999b39f6214e94cd9a7ec084b080f271a894323. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIV2419122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ee6c2d89464640ffcf6f9974a54a9d4e28286ed8d559115649af11be33aae0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIW2419129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2809c00fe4b2a6bcb4407d4c2805022280b3a2a538875b8b2ff5d800fd7e45f6. 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/TCAIU2419144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5cb1ab473a1652c59fd46f52fd38d533234f42fc91616864a0ee926884f01d. 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/TCAIV2459573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e7b2429d79a9ce7eeb1d581f642f02eaed9dbf05865a242d00b98b13a5eb5. 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/TCAIV2459577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941dac5baa47afce9794d4e18fed2c32d081ccc470da6e5da111531fcd812dfc. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TCAIV2459581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116666a64ff9955a56ae2653572fe69d34e5bbbea25dc97490c3b38aa78a231. 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/TCAIV2459586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c6e942cf7588450c768c4b65e1e8455cabbb9bb123f099350ca5a6e8f5a575. 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/TCAIU2459588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd173f8f2f0acc884043df3a6f7f7e46d17363732d774596ae4ed8d647689c7. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAIV2459590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499cf71260d3cb1b953a167c61ebca851357a090d041c4c6ba8c0354441a8825. 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/TCAIV2459594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68ed2561d3114c71b97e2661a45f273f1ea2399085320df3a5b7e97fa639da5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIZ2493045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2019146a15fafa9fba3924a49d8bb72a71cfeda9f171246a8bbfdc634ffc40. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIZ2493051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237bf7fc2a2b5656aff0d2d67c2e89865d27b65f3aa44c9bed414a45e3006f1e. 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/TCAIZ2493071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4539df93d54a4c17df2b99cbb73b4750ebcef753329845ded508d24e78dc5b4f. 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/TCAIZ2493075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6cbc145ae67b451339ee61bcd751fef463189f2ba1ed97c7ed482e4bff0841. 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/TCAIZ2493078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b094266f8d5a29f94b0a4da7f4f722d3d6e06b561c666bcd7dfab12bb569b92. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:49Z), 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/TCAIZ2493083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5113d595e2f9f9f64438e3f4d26b1450b8eadc89e57e458a9e305b8797e1cf23. 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/TCAIZ2493086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ce0bd1cdbf00b6c08e6765820b836bc4c8ca2d31bd9d42f62d322da66a4996. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:51Z), 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/TCAIZ2493094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5e1c673c0eee4b7127b5bc44bfcde1e1ce4a2dbad4ff33ec01e0751495d887. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAJJ2513873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cef94275ad5930e0585f1968531060391feac324d064eed1bc8b48b7f258ce. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAJJ2513875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214b640a937fb44c1acedcaea2d308cd3c8b63adc24b8dffefbf9adbe3a5357d. 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/TCAJK2513879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f42dd1be7f07ce5f1b097066b1f2c9751b514f1a2d9b8affde239278b084027. 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/TCAJJ2513884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d6e3de9d0821c7c157a8db9d5af3d78bf266f5ae64efe39458dbb85ab8b404. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:44Z), 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/TCAJJ2513887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff06664f3c48f313f7bc7352fd74964c64e3bc51a90a5f96d1ce4d3e14c0ddef. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJJ2513889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb4dbf4949961e415742fa7944fe28ac2668aa5a67d3cee305638b2ecca9e0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJJ2513892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b700c15f00c04a9d9eb5369f90ce149d80252170fc00381b358afb61a744ae3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJJ2513898.