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 0x2ebe8624dcd02f73ed1b9773e96630ec223d6ea37c0f0657a48d17ef33551e31. 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/23a42c8a-064c-4be0-99ac-b4a209564ddb.json and https://artists.proofprofile.net/proofs/artist/23a42c8a-064c-4be0-99ac-b4a209564ddb.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 0x57d850f0fd800cc42d8b7af6206c6bbcadb02aa874978a342e3b910cb5d18af2. 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/USHM21920791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15ffdeb6fbb4f85e70fe72942c165f94d5876e220e198c18abcaef3dea7b3b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USHM21920796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99093e92637ede37bd307e1e1ab7ae8a179d260e62d376a098a95f984b55c13d. 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/USHM21918339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689fda5081d9ba5e13ce5fdecd4dfbc24da7ab92ad1f6d4f77d3edb68d22e16e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USHM21918340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa012203566d450fd9abb8b4bd7b1f08c9f42d8184ec1d7482a2fe5d0295aaf. 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/USHM21918341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd898264579d2742f958c486e7c9cc3dc9a74ca547350c8c4b713bfa831295e. 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/USHM21918342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69299bb59dfcd61822b213c41b27f03bad9fc9e31932e3db42ffc9cc4fa679bf. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USHM21918344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fab145df8e178b20234c17bce1d5bd6f26a37d303425403bb652a062458313. 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/USHM21918399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee28e27cef1ba9451fcf175eee90da3ade90e10c51f6b23217797463bde46b. 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/USHM21918400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770fe5fdbc98e087219dc70e83b0ba89a621964ccd966e0f3e0d06c8cf6ce02d. 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/USHM21918401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33900db6ebc7954ec8bee496405bb794b3668a7ad9fea638f3a7ac95d36d98ee. 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/USHM21918402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc439237126de56ec41a78ce650a6e74b5cc8905f85dc26a9108d80391ebe3bdf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM21918404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4979c357509a2aabeb4af3948c85981491767bcab84d2c677c7ade579eb7d2a6. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ1830435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666473f79145c4b41cda38d9608f276d9e798988a9b024c406f374ce2905749. 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/USCGJ1830436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfebeb4bc1b1048724ddd23ba389cc7fc42124908c0e766c82da507f34efdfc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:49Z), 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/USCGJ1830437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1bf2d3176f886bd3be042056d8381e946db30ef8112ae85c0129a56e20d1a0. 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/USCGJ1830438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76d56b62d73697dc9a2a20040a05ab35d61214413aa903965f388f0025d5c50. 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/USCGJ1830439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e799c50a4e44e1a2702671d7dbd72e9622442f0d29e1ffd3c0e5b40890cbf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRIGN1200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e96664c7916a69ac00469c3696f5ca689cfa2a10a5099489a22ce72dceb97a8. 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/USCGJ1830440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960daac22a212f34e8adf455fcfb038caa59eac121f53fe405193ce016337b3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRIGN1200514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4af41478e93d54c8fb5dd68b2b7549f8c27c9f743afb22d9227c1e5a7507cc. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:28:52Z), 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/BRGOR0400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af7ed1a124e8cf108c0b25db8b4f90f608a229e632e0b37cee2e8a74768ccb8. 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/BRGOR0400541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282672608b8499922b3665fff8d0ff6cda427ceee34aa9c1e90d3fa2714cccd5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRJ640800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05d5c60750a59942bfdc571a78161e2ed49898d8c54357da42acb152fcae15. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRJ640800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a644177c9d29a4dd91bfde877296fb99e99a5d437bc6f14cc20bcc0314dade9. 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/BRJ640800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bfcdcdae89c1c344f07be8f0f1aaa081f6922229b3d46a6b76cb2fe83b2346. 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/BRJ640800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1924619c9cdb4df42a5bce8070ada038be1ae151b56cd9119e94ff1a87da63a. 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/BRJ640800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691567d14eece7d4294bdb56ee6ee4f395fc0a0801a148a6a085905095413993. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:10Z), 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/BRIGN1200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f985ec565764059016cfeff8809c85070100b6200eefb1832aadb4ea5de06d0. 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/BRIGN1200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d047124f08b70d3692dee2006c5d52fc39ea6a13552c3d13cb3868fa6ac2ecb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRIGN1200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa70a1848df30d5c83677323953f72d6193d7585a0dad62bb39f947a912a07e. 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/BRIGN1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09948b8b44dbffeed3283e642fb5e8e0c0ed20597e9052e9c5941ba395618954. 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/BRIGN1200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5088c384a23f38aa4c5627bca776d987731acdd86f3900afef30592f1f54df. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRIGN1200511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e799c50a4e44e1a2702671d7dbd72e9622442f0d29e1ffd3c0e5b40890cbf. 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/BRIGN1200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0792149cd1e0cdde8f7334b68945f707b58c253d933ef7af6b26d277cf994ba0. 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/BRIGN1200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794bfc3cc86d61877ff92fb02e2d6238755020eafdae60700edb5d8ef1bb6eb5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BRIGN1200518.