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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62428cbfbfee578e79680a0950046841891ae2a1c8f2ae298ea8a69de01f7a7. 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/dd0bdbd6-e142-48e7-b5a4-d823e02894d6.json and https://artists.proofprofile.net/proofs/artist/dd0bdbd6-e142-48e7-b5a4-d823e02894d6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc533a1a61b8e2123c0030d17ec2b69c89a4ba09fa668b6e5b9660d1083cbee. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZMEN2059070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63858d7fa13a423b4370e3c58bd9d0229763f5026f293cc02ca17166a14000b9. 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/QZNWR2076720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61057222951055eb465aa6c486312883ae0438002fd12074044cf21efaeb2495. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZNWR2076716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14975a886c36ce52e5734b7392990a2f31bea86233ac4e85cc8302cb610b8746. 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/QZES62157659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2552925192b7fdd6179719ad0d7321f66b9e8f6a8a2b81d1f91eb1d24529a3. 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/QZMER2190808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4d3908bd4ecba8feef1af8d9599376685972462b38f2ab3722e61ef026af25. 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/QZMER2190816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085eea318c111f81cfd78f514a6434f18826236e1e93b0422886ecde82dd9d6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZMER2190817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da43760c7f5159932896c5eb2b9b0483b612b7caf942584badf40fd08a2e5be. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZK6G2265662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62b2c141945e2c75037aa31f2f01de8ae33bd50a54f1e5c0335f1f44eb93c00. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6G2265668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a223a9fb683b9da692d89bdb8830ba63f659c8611e9500b0ac0cc4c56085ab. 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/QZK6G2265670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f3ee85e30ba6b766796d44640f45e0dd4f29d39a05bf2b10a88f6a23930bf4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZK6G2265675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c63ad6ba0aaa67520b0c9f90f2d448c5f61af0b76cab0255e334469bf3d56. 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/QZNWU2295055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446cab5aa923f643585daaac70961a676a500b10e6db49068d99d9a367febc83. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZNWU2295060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5749922aeb8036b2d8c77af334f36238a669670efb6af21fbc9b74fb367a2e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZNWU2295062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f6aa5981207ba17640d165ee8aa699380e4e10a3123be69b54b62e2b5cd53. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZNWU2295066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7aadc2c935884c332f9d743a687a6e028c8ee3132232eff141d4b5a4fcb122. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZPLS2277934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a14b8a4df3c51f155d11028cb59187f9af77a611308b1454f4d0ed763e5913. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZTB42247679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddbe7a306c9f71a03511c98b550fc003aa4f631f72890986a53645350981ea6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZTB82281102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc541e68331dd2cfef4b6afcf0225d20af5314fd27cf26d611a8ddec81f2ac023. 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/QZTB92230366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10da69d2e57fe552a9a57833f7175cbe3f60b26cfa2161d7c1044abdf0272f3f. 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/QZK6N2337301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d6f1e263e7ea84715e347a9156c7cc012131919d887520b58f9d83e2b0d0b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6F2351081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9cc86d8e247adf9cdd0edd7a6fc37219fd5d77906f0ea8bfd9ec225363969d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWR2384241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d40bac52ff0b60b544b1585c0eb28b0fa459a445ff21cd75dcdcc455fae60b. 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/QZRP52399447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6870dee99e71af65401068dea393a685620254e83126e35040b4a5b9bcf0f7. 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/QZTAS2373205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ae1b9b17c7d12109351d86e165e74aabf1d332826650478c90999bd4e1209. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZWFH2374221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ab523eba4d9f33c7bf3922089cdef9cca58ce46ffc0085176f3a159b938b88. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZES92449123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dfba3a7e407bb496ebf20e5d0c611d688c9c0fc4eac8fd780295d6003c4358. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZES92449124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dde1820bcd9284f2741b9e1e643cfbd2aedacc72d1f6fa853203e53c38a4af. 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/QZES92449126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf11e7f4ef6ac79ace58c8ff1ed1d2b28e639505d7d98c88e39ccd30597319. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZES92449127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dc5db98fbcee0a2718f64e7ce47ba82e62fcd1b11b1d09e199eacab247cd15. 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/QZES92449129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7684c9136c4c4b991b20f93d3bf04ad81727ebcbb68e2ff45e0ce365ed367b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZES92449131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc7da22f3d860158a8bf3b22713d30516e1315433483a8c2a72532528e8f7d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZHN32456272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2989a1d7009d033aafca8d765afb90e3ed46f12eba52b6faabbb28336752da39. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN32454429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b2f4a534616caa6fafb2d1351f4982c252a26f2274687054ccfd0d2454a702. 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/QZNWU2406182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b7888de6e004f25ac5c6d86975e57f0188b8cb7d062c985eae0d43c0c29f2. 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/QZWFL2447624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33402089f24d7ec062b0df9ba7e2917cc421e0bc279ca74e34bc2ce8e5d41057. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZN882417296.
Roudha Hamza Ali Warda Amaryar Soulaiman Mai Zinariya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93a5004e6e1589b2ee0ff8ac5241c05391aed7566414f27783d34f88fc7454b. 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/QZHN62555371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca14cc6881f8a5711cf2b8499c533aa20eb4b80547d50f00cbb597ac1e948e. 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/QZHN72565594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016acc25bb83e335c9e1de5218bb39417e19abe200215e2cc84aa271c4a6310b. 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/QZWFG2530765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11a8617c39da1a45fec81b7140e7b3a4f9927a3d010476fbc6b6d6629e83e50. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/QZWFG2530766.