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 0xb6108725c835008bff95b05fbde5e0ec84ca0b4d07dc7a01083b74bec55bb1e7. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d270ffa5-7119-41f6-95cb-225aba5147e7.json and https://artists.proofprofile.net/proofs/artist/d270ffa5-7119-41f6-95cb-225aba5147e7.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 0x65614879e422b195ef340c94e76fe050d5215080d39801eca4f7b1e62a81dbe0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBB2215621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cbcdc56ef03f7ddce8e45fdc0a79ca40913c654fe6930b72293ef7cadd1625. 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/QZTBB2215622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6152cf2f53a464e2d749bf0ac11745a87399887859eeae54b44fcc68e90683. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:34:02Z), 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/QZZ8A2564854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb6e5965f549d1eab65591a2b563779de70b0346b8bfeb864da0732e06f6d5c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:38Z), 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/QZK6L2377648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf64f472610ac6e14f72691d82ab076abec24a8edf5606b2f5ea1dc49b95d59e. 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/QZZ8A2564858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f27cfa199d4e494a2cd78337f87d501f3ebfe1c3c450429885893941b9562ec. 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/QZNWV2318871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d415788e537712681fb52a93c09e81140da90a46c2d6e2d0ffec382140a00. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWV2305736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0675017a34a4ee7932074e12741a9e6508c1157a06da3d1361c6d86aab5071. 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/QZZ8A2564875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035f139a42de83de1baa3c1f646137f5456466ddc6bf5fd06a87f7dc4d7f88c5. 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/QZZ8A2564876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd59766d44456a2557f86931efa60cc5e6c3bb778bbf314aa2cfc6502cea573. 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/QZK6M2448345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863b470db095b2f7ba9692bb8834b95b13f73a7749b40a27fc8262dcc543e18. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ8A2551929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ad85b4ff84c2bf3329430228dad96a9ccdc17bfe7a5b679f6bad7f31d5572e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ8A2551934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a6db55c0ce1da41839230736a38012b71120ff63b0d6e6c35991706ccf112. 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/QZZ8A2551936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075b93356bb07774bd58faee6c454b8369be2a61c1dc0ae8b28a72c9362d3623. 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/QZZ8A2551938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0266a29a49758e59dcfee69e802a5e29a52d0b297b27a62e99125461f20f55e8. 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/QZZ8A2551940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a2a889fc9a49e639503fc88718ef00a0edf001c0643d4bbe473426fcf96d5e. 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/QZZ8A2551945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ae344a4eddf58c1eaacda291f1326d5427c0aa7a1a4d83c16a4566bcf3481. 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/QZZ8A2551948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d0b2b787fd806bfd8c6776268d553ff3ca442381280cd3077c8f5f1a7b3a09. 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/QZZ8A2551951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1475743e23c92e163a45db40c909464aed1015cbdcb762f4f43f5638652fcc8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZZ8A2551953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e8955834405a71035b9c0355c3e45a83ac1be98771d2f117a4210cff537c5. 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/QZZ8A2551955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3367fa454d4d41a7de55699c4df5f81e6c4f5070fe9154907d4d6bf9c8d15057. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ8A2551958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559d770c97399ad5e6b374f0df57f9500f9bc48210767dcce76e5a95bf244828. 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/QZZ8A2551960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102b7dee31d8cae99a84cc20c63ba8305451d5d7434272da61e90c876e5b868. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ8A2551963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134639b93c8abf8f307c26f022ebaff1099ca9be45a3ca6da62be4136944ef1e. 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/QZZ8A2531370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b534613bc64b290a7c205624f11da5c1db4a97dd084a07fe02f29858b8cbd40. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:43Z), 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/QZZ8A2531371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468347d96696434313e2e6cc2824d2bffa74b2129a631692b09a715c5de66e3b. 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/QZZ8A2531376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdad83663e37e58cfa7f64207fab5a73d47648651b15d42f27961799fe19115. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ8A2531379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac493c765c91823ee35aec59a93ca2a6e8b5808c0b4a6cb4ad2560d863f334b. 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/QZZ8A2531383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63c2856e6e8ecb64bebed88c53a2b5a0089945daea9722da94ca96fc767de5. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:06Z), 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/QZZ8A2531386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd36812a6ac45cd156eb7f2560f0807d3e28a7e222b69d4a991a892d9a9c3ddc. 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/QZZ8A2531388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5ed6bec23c9b387674bf14cae54f87c4ee96bf726971d370cfa1718b6e64d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZZ8A2531390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89340f067c5272778ecc4e638b6f8e1232b4756927ab0b8143eb39c79878ef. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:24Z), 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/QZZ8A2531391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68479485fd89581fd46785fab3c0e7dbaa8dfe9a89d4650353cf4f69b71a79e3. 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/QZZ8A2531392.