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 0xe10a7884f19eb70a51ce369c7a2f4942c32e8679dc5f6cfebadaa40c5dc25493. 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/a71d5071-0dfe-4bc4-8870-9caf4f53e030.json and https://artists.proofprofile.net/proofs/artist/a71d5071-0dfe-4bc4-8870-9caf4f53e030.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 0x934b43d5179d0c3b9a7e5da8ba29d7fba3e60bacb9829b5ae7d6207e66835058. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CLA352300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491bc84baee29478a0699ae09b586cf9ddac2fbaacb4c8faff3757b2ad423cb5. 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/QM6N22288895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9b6ad30e916c4624139670301f4e0a2f3ed61f6f93583b3ff5961bf0770e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22288897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a3e8cd73d30c47ffdaa891aff1441de0571d9d42be8bef246fa5a1710551d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2220978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3a7a8c5676345e59d24b9ac07a65515812c27f3be2955470b0f1831398ca9. 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/QM6N22288898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0928f3fede9f2fd8cd1b78083204f3b68491a655c486058da6bcd3bdf86defa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22289011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5a8e6b83495d7b86889e0e47e8a24500a60d2f76bf1e0f1de1e577588c76da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22289006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aee92f54bfef61758af7cff902bb753ce0a07210affe297a7365b3c4643431. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22294018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc362d4fd1b2661380bcae36aff5385a34d0e1646e037099b1150b83dd4fb2c6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22289964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b478172bdf2398310408666cbb6d7ac6dfc35d9c65f860cca10599352748d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22289125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9544189dbba91fa279e3146f3add4749231298b87eff2e943476d68ea39b5b40. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22271446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bb5a62807ab126c56837f623e64ddc4a8390b73b41aa8f6b46a1a5672ce31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22295280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b242dad75a5e9568defcb2d35ded8c6a1141227b219ff177e81c4bdbf27d7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22288909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50cb0b5a76158ce4c521b86d818da4dba58e25d98c58f22f2ee345d2806322. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22294067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f894302b9a6f40f6d31a2bae08e489e2166dbeb2248643e0587e33017fdf98d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22289121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49bd9a2215ab5f281ffacf4ccb86e15781b46499f50bbaa33aa7d62003a39cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7e7feacd7218ef313a1e3feaafe3016e6c81c0471ac7ac93abe2e16a793b23. 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/QM6P42043603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e0527b043d110881e2606e93f509df3f1ff69f260106e7f96ca4cbd51c0c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42043620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e2d73ed5c5336de47674e7b222420b0b3a4cfe50b55a4beaeb83118ac75bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42018934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593022e87ee59bc0adea4b18d1290aa9ae950692ff5b3f906570251f92b1002c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6861c9280c0eb988cb4a4c17feb662ea64e5292b74720b49b51362dfa6e9c8bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42043608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf812a3e3883bdc8b705dc59b53d17ccf3b174fb10f5c7aa99f97f9d5f90cbac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42043616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e90c928891c1f61d43b91212b908b6466476db16161a47895615d4f2c5802. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42043604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812bf9f61e3657ecacefbccd291bb36ddf4cb2e4b0dc3cb850c2d393fa20fdf4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42018958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6be79e7283481907b4b601670741c2c77419c7a17c3c277feb6fb91528fde99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45d132c553e802a01c9dc42bf0ebfc95a5c51d3177e483f8b9ca85d356fa4b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041e5670b7700a273f2971799f3d01312d32c5eeea4258cad84c4559f48cc22. 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/QM6P42043614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121ecd2c7be28dae87c94c5f34ecd589022c82377ca760a7f4039d432fe85095. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd9ba8be23573a1141f935569bccb8a0b0895fce973a61ed2b34b7b32b4e8a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42043613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc20545a88406e6f954424206727377018dc23ca3d45896523c52dbe4432832. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42043615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c695a4e88149fa62c18907eb43e426dc4f372742560d8a702f67f2bf2b90f8f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42043605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629a0b29cf344a51e22f7494fc6fa4d61650fe1cdcee9cd679ac6e7770da0d45. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42020718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c443f679068da44bace0b18864e2dbbb519a4c7911759ed1a6e681f8b5728f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42043606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d3f4377ec5718872e3f451556b3d88b14088c8aa0d9a507fcf9bbfd88f77bc. 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/CLA352300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd23aa26a48e5f86316d6fcb9d1db0de63f2e1efc63a7ddfd66fdd890032073. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA352400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e6ea496995451dd587ab174321563d6de3a587dd1af872fbe2bdd48a1b8c9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CLCY42300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934b43d5179d0c3b9a7e5da8ba29d7fba3e60bacb9829b5ae7d6207e66835058. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CLA352300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c263e35710705c70a028151e1136c9f0a865d39e25725ff71fc747dd9ab73bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CLA352300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c760bf9ce758eaa3bef6828d556d568db29ad174a2a7c49df7aa9474561a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CLA352400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fe1be0516fdcd9cd803207ebed1d06fa5f3e3da065682ca48e63b907182cb0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2121308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94f64d5fe7033b2506707f78a5db6d053faa130085337821e68d74348c4c41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA72194599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e00b616c9756b40f7bb538f9f5fb6c87ba9a3610512d1d8ce08cd456adef4d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJZ2342087.