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 0xf37470670c367751fcdf24056b79a08763edbfa6919783f7574179dacd7f70e1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b82e34d-0020-4441-aa56-bebc2418b8ba.json and https://artists.proofprofile.net/proofs/artist/6b82e34d-0020-4441-aa56-bebc2418b8ba.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 0x73f8b7e6307c47834822441262b71d58957b77b23f968051c19d2deeaa3f12bf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:58:16Z), 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/CA5KR2397343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6a5845f1dae300e38302732058a0ad32b45b4962be38b40ca56cda3ef309e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:25Z), 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/CA5KR2397344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec676539f5cee41d32ad6783e2c8f8cc6e6122d23216049e49e74ff997089f81. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:55Z), 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/CA5KR2397345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad0254f33e7cff2977115cf796fcaf170900491f208e41a5dc99a371c60de8d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2397346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3ed38c7df9ca559341ce3df7aef46b7fa85d6e9e68d366ac2df718143d8aa. 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/CA5KR2397347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf592c2a40579c7097f6ffa03698b2a0a8f526df3b4a58f0d3b4ef24e3afe2fdd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2397348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142d2707aeb4ebea2d8c9e4af7e30f55ee2366e17d05b076776451d4a38c23cc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2397349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1cf852eb4a86da704b66cca8f1b6431966503975b4aa413c732192f9c23c17. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA5KR2397350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ea7b2d4fab0267b5d441a42cf5e65abf1478ca4ec0306628e8e89f618bb273. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:35Z), 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/CA5KR2397351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58953cad7bf89c4f9f8613975aba0a935848cbd4ff72c8b8cecd27495a30639. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:40Z), 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/CA5KR2397352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030bfb4fab11bba66ac3023fa828690809038346196915fc5ebbf9263a512cd7. 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/CA5KR2397353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9980480571dcbe14934f84a4100e9754c3a785a18483728dc41969c9ed226cfe. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CA5KR2397354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10bd491440d41cdc2b54aa2e3196c799ba1060792b2036dc4706d2610cebdc1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:42Z), 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/CA5KR2397355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edbe16ef37016e9cb01a4db33b8c314c9abbc68161941c04779b36b9bbb6542. 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/CA5KR2397356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515941207b86fe4d2721d029a68fa47ff2f11fba79757aea66571310a7a5a58. 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/CA5KR2397357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb569d3db20ea28fa151f64dc1112b101210e859d344cb4ef6840a1f80333d7. 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/CA5KR2397358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b76316e612d07af474737d8a715274e0abddb84408abf9060f8352569ff86d. 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/CA5KR2397359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c3780d9387cbb6c298baad6ba329f9d348b9394d25f4e1733057d9c93b82d0. 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/CA5KR2397360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd30e95842bc19171d97783f3ea370b7c6ac825ccb4d7572735e2bf531391db. 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/CA5KR2397361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8112735eec6204e41bf90bc35d94c7a55d03a7e9e548c8885af277bf480a38a7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:55Z), 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/CA5KR2397362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a83d765d6b9eaeb373aa01cb0bedf0d8bd1542531f31a9015552a5928849e. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZVEM2567035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de785230a5cc53a8a194a692197889852ccae4983c841abade228fd973f51c8. 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/QZVEM2567037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6700eac857d52dfadedd49880ca2a1b62d7e09cbbd741972e84b261b378c1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZVEM2567038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e2d07eeccc85715ac865c46c0b5f429be977e7bedc0269ec9ae48a8e542b0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:24Z), 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/QZVEM2567039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26550067fa9ae88851118fa79923b89be6360f91eb00b4397329e81f823ee91. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:22Z), 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/QZVEM2567040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9be9269fc1141ba03748d20fbb839bdfe0c7121cb664dfb17ea1b0a30e8d5a3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:16Z), 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/QZVEM2567042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82178d136d7ad71aa27546344f254daa0ba054963f30d0434c4ab370b3bfca9c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:20Z), 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/QZVEM2567043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e039e3c95d1f5973d5884d19c4397ba126e2c38f209f38e983feacf2c771450. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:50Z), 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/QZVEM2567044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38b48030092ec7f51baf7604171700ef35b2b0be80c5af0414129e2ffe7fd61. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZVEM2567047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c680a5fb7a1bcb8360c6b77d13377783932a535a80c6ddea6c3e2e9cdb53b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2567048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4341068a771c0e0c51d207bf4e9e4f2f2ecde4a4e47e96198c507d0fca2a7. 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/QZVEM2567049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a14591463206672585b125c9fcccfcce4c2d858005c7b2ffcf75a985c4e7b98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2567050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e7a8a9d3b89a9f20b21f59233a1687b5d762f8227b0b5028d6b976209d6b5d. 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/QZVEM2567051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9237dc4597dd377b5f2b9e3fe993965e0ded65319c095744b7fc75a233e23. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:27:15Z), 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/QZVEM2567053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c7c2eb6e21fb57e71447b919b3a526bcf81b293ca8f1989f7ceedcbaaf083. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2567054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb07a8a7b71d46f700b64bc4d6b5c80deb66de7097a4c012aaad9dbdb9d8da02. 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/QZVEM2567055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba66d334226b0677d794f0f21241f138cd2256484fdf197164c7f6326d16bab. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZVEM2567056.