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 0x35f57c972c4d5b9cb1f42f01c005421dff3c32fbff746938eede31d578ee9075. 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/527e1b19-913c-4672-8296-33077d4c98d5.json and https://artists.proofprofile.net/proofs/artist/527e1b19-913c-4672-8296-33077d4c98d5.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 0x844696ff597972ab30d552923ff5d55b46f0088436ad3204cb4556b69bb40874. 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/QZNJY2370739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0007a2e9ad635e41923c77f58fae63d5a8d4501a865efc7656a4da2f6309983f. 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/QM4TX2329924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb28b9d21de50d71c55a0a1ce0bbdffdbf6f0f22359cf6dc12a456fe8c2aed1. 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/QM6P42408353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291cdb46fdf35c2a642ce3daa0874d261be3664b3d44862d398c334582299cd. 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/QMDA72326996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012db23b92e609010a0bcd7b1ab7778640e8efada1787c6fe388575a2375f462. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2223113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd605b2a5d564880026ce09d7189c38df229383ccc7bf4a9dd3455adc80313. 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/QZTAT2286495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8644d1b370ee024c5e1ef9a586073c6ede0f8c01ead993f89e2dcb2e74da81f. 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/USA2P2232272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade4a63931597c9621b948953324b7c2d90b51ba8b420a4faef4868332f6fd69. 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/QM6MZ2443169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d3072b769037d1252adc7e7f3bbdaa166b257fe5a6649d12b8b5525d5c0d6. 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/QM4TX2408300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa451d403dfaa673562294ccb60b1fc1422145178f7267fcd0a4f1b32296b2884. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMG2357878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf893ab506be61d62d8ea5039fe2dd0a0c35d91abbac6550a22c98221a4a5f. 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/QMFME2394206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e347a8e8be486320e48b0e498044b29b826cda2efd5e41d070f394b4bf7fb5e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM7282338522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d1b076ec57f53bdc283c769a2b37d71896fa321c3ba3fe0f3fa31fa48292a. 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/QM6P42323758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2401b215e333cfad5e969415a0d5227e3a11ab508fd4cf82979504f893d97d85. 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/QM4TX2399844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699373643d0a01091738fa774979ce2ad63ebea91dcb747c611450f010475259. 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/QM4TW2347372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3648809976869ff649f41f255447af916cf4fda47b5730ec7cdc93c49429e743. 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/USA2P2300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56d9d18acbd753ff27f85e70153e8e1e0404fb546738fbc8dbcff61fa1ed360. 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/USA2P2254094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af3fd2cc7d6472f352eaf53d1e614918b7067d206f16b1123b1c6d40f4accc. 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/USA2P2249038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33403c751f1193285f9bf9fe61999bc0cc94c72acaa1c0cded779dc612021d. 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/USA2P2242702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9793ab9237f526060e31b631e65419c82ec8d2edc1867805952ba5eb2abb4c. 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/USA2P2240113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd829722d0c3293d14bab47359bef0a19b5b76c0b49d4ceb6acb6cff9ca716bde. 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/USA2P2203521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69714bfe744a0f373db19c30a6096dcd7a0dc68459cb420d6d324d2888710299. 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/USA2P2236075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120ad67cd5ce0a4b40d90f579ef4eaa2bf73ed8da9681c5783cbc7877af01ba2. 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/USA2P2227049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bed31609bf7ac1ce8fbbb6fbd77166841eeedc8de1e1f6f2c3e2db0063a248. 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/USA2P2209811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12bfff6f4f0e5d5dd3e412435508864d6136232071c14d448a90a52fd09a32f. 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/USA2P2200938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d14e8fbd7580d33a351ce1b4d8a8363aee1c0d1560cfd19048e1380e29853f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2151998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d53763de06409538dfefc3da01726e22056e7f7a76f5f4d2efef388c10a7b0c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2151183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699147f94285e6d3714efd189a307282ef241534e3e72389adb1481df8299684. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2144959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f7226fd4003910b492fc80d7712a20eef681bb9d9cc8931baa923f35a7831. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2136335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9e13e38066206c5f85a8d714df4b6e9c88a5730d0a436998a9b038776eaf0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2134465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a6bcbdcd76132ca7c52861e5310527367ab9c29ef7394a37bf21f70ff0e058. 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/USA2P2134035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f8929405e39d62c887418778e31be0c887be10ca96999c6570c50e45f465b9. 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/USA2P2139252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f60bfb871621f3a0a3448d0f3eb1cface48640951036797e3fddd3a4fb431. 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/QZK6H2194082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b191bfc9131eef28702d297f1af679a6e3a3a71e34197ba290d2a44a7e6e3bb. 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/USA2P2151781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9721e55cb7a9784cded33a100a291b374e3f3e62da73503f8dcc1d58ee3d7610. 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/ES71G2122441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8c43e21230788ab3ad043b1fc05613c8f721aafbdcc53ca56e40b8a7d82a75. 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/USA2P2135458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52387bab0a426be295e53244a33a61f525e9b2cc4f78878faa438f81f2dc2a2e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2325557.