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 0x5efce6905aaf55a2d7bafab26454377de82417bc2a66d0f2f4f4af0f7e6043ff. 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/6498f57f-f411-414e-aff0-14cbb34989db.json and https://artists.proofprofile.net/proofs/artist/6498f57f-f411-414e-aff0-14cbb34989db.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 0x2e7c91e661ee18df421e02bc264e19ecb026fc7ee3cb4683f889dc024000b03c. 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/NLA320320257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce3878ee81c608b19cc8831864d69e4ff83d42c57306468aa4bc3fb90342b45. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLA320320259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce457d198d450ad1a60fb71d64485653b7d01394b8b8df8e00c7c01e67a7e7e7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:18Z), 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/NLA320320261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058fbf638d6a969103ba929a27daf19a99437e53827d4b18842ad7bf83f3c87b. 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/NLA320581585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aab106720a6b5c212c682158a472ace1e8f7e039109522b903c7a27a9028a9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USRZR0388903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d3d9181f9c9b213206ded8191c11dfd542878d620724599b7804279a9cd1e6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USRZR0388905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecd5e4398d9e0aab66ade0254f62024a8d97afd9b3f7164b5602612ec3b435. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:36:32Z), 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/USRZR0388907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4899773acbf56ab3669227f91841257049f178c74e1f51f88fb9079f9802bcb8. 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/USRZR0388909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f89c0eee6fe892e654a95052861cd72f7cf9e4c6a461684278856778473b14. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USRZR0388911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5bb4f232bbe8c5afa013e7ed770c5954cebf6d1260b674d423fa6ffa97e6b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USRZR0390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd432eee8401c19537dcb45efa209b560cae42ee762bf5fdb483c8691bd56ac0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USRZR0390002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f5432228cac25aed349a34c40e779d7a059bd9be98751f5c72288be0a4025. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USRZR0390003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233a9ef99738bbbd29c85446b78384d28680cb86ccaf2e7d1f7b281fa23dd5c3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USRZR0390004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe092f3625aa78179ce76f647c3ccda3939e1d1a2c9405311506d69d2ed0ac710. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USRZR0390005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e548850f1a5a4c619528a5a874e44a47253ef72c5ffbe090ae2ebd37097a904. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:20:04Z), 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/USRZR0390006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961f87127b278f70a9b54cd8abbdb5b7e7d34a7534d2102e3265c76730281946. 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/USRZR0390007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4f7e6c701b0862d5fe30eeb91c8fbd5d93abb1fcd57bab6c37be0f9d955cd8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:39Z), 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/USRZR0390009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe6fe54c358ee1d0895e6b880eca28c25f33088dcef49d3d94ae9d54d3f55f. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/USRZR0389901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d9d945c86419037c56826529594aa64441c147f1327d65c29a426e2e407b6a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USRZR0389903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b73c614afb8eefa9bc65d083bd80e9c513aa18df0a7a55044076c70713a8c. 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/USRZR0389905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87df50797ddfe313171a5299c3784e53d0f6c75eefe6a2bb3d4df7807fd98ac. 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/USRZR0389906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ec1bf1b1c77e91c9eb30aeda19c410558768bca00a16444991a530ab4ac457. 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/USRZR0389908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a233da1403ca88e40c93ff3179d326ebb5273ee24c16cfae5baa973f880d85f. 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/USRZR0389909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5ed0102ecb85f7b78184b0626100424c614b37d4ae272b03f2912071ad81cc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USRZR0389910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b805ddc561d3d03131ae6ca1805734e122bc330b15206b76afd72a49dd8367. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:50:59Z), 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/QMGR31992878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe6945cf9db39da96debed95d0e035cc5be6c2395e0ffa2ba3b1f8abfdab60c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:07Z), 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/QMGR31992883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9461e22630d0d74047f32eba470e9373a486869faa560b3c2e6c38f47af2de. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:51:23Z), 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/QMGR31992891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19c53a7b36b795a05f46893a683f147c5df62bee787ff57d85291c395476cc8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMGR31992893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d6745c1eaa18f689c7e5b88372688597fa47f0db39cd41a3bc9b88092911f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMGR31992895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47726c9f692105f2681ba9090d541f33cc339ca94e10f7d2ff27446a8ca6e75. 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/QMGR31992899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35197d680b5d92c853fe116829e0d3ddd4888ff930a835d2286f2b3a372120c8. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZQAY2481294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796cf702d530549588502d34e192618fa07a95d1dd907d8c5ea57bad30378e5. 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/QZSYP2408625.