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 0xaafa6bf7bf5bf8117321de8d9fd4905419e256a3eefc68e63c84a761f22d274c. 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/868b7b35-e3d6-46d1-8704-f50e762b73a5.json and https://artists.proofprofile.net/proofs/artist/868b7b35-e3d6-46d1-8704-f50e762b73a5.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 0xd26a75265bd8c72fa2d4b8ae571033c79d821cc0428bb25970a838e31391dd91. 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/TCAEW2096120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa321e74d3d2871cd40f49a9af692913f68f965b01214e1ea6bcbe2f63c49df76. 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/TCAEW2096123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f604aa146ddef05180c13beef0ef14d488e87ea034b4115cecee97725935667. 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/TCAEW2096125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b02bb40de9686fdc8e053fce9b062de8fc3e913244e571846b8032b126d713. 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/TCAEW2096128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce9a54b084cd7c964357a526758eec8b917c6a8d5cf61a6c989b724274e8edb. 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/TCAEW2096129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac8b5cf9ffdb3097b0596e5ea1545b5c7f99d0dab5d4b3c6cd753de824fb768. 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/TCAEW2096132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80af62e9b53c90c8a9423055b11fc3ef66e94cc4e9f62842f7c6361b70e0eec7. 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/TCAEW2096137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1bf8d57873f45410650a220da0bcfe1c1e0026ca37651845af0ec7cd821c9e. 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/TCAEW2096142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e20711eea5687dc7968d539560263782d68946364ee718915b81de85ec5d76. 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/TCAEW2096147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e6524e91bffd424d7947e6ae4c4e44be675ff148e70fb3f18489c150470573. 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/TCAEW2096149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2446c098c928246a7cbbdcd118446f6028362c69c2936fec63b0d76783be88. 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/TCAEW2096153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009e779449dd5411a1a56bd55c8c32a8242efb04251d63754161975605a28ecd. 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/TCAEW2096154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261cf6e9829b6c2ded9f5823b68de03c2128b09dd5803b1b9177aa5229258c07. 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/QM3DF2249892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6c8e2a5f4755e4ca9c175545d57f578a16074e74da4e4dcae9a869b8c0a1a5. 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/TCAEF1981023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3fffe376d2f4a2dce8ca13dcb9e69498d9eb30c31a0d81794b0feb1856fd0. 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/TCADP1847283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee31517074efc6295859f23c8c15a2877dfb45ee99c4da68e86967972601a6. 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/USANG2215477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c055f46164c8e5ac4240f7215730ff8b40735570f78b57889e60c48e527e2ad. 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/USANG2215478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de32beffaceb0e27a302311a4f6fb67ba306a1338d9e4d264e078705f2fb1e. 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/USANG2215479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af450be29f7bd73c19b25cc830084387dd2128c94782cc4873b28e0bf89c043. 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/USANG2215480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34ae2eda521aaa74b0bb958fe6e6c00822c40a07898dc6294c4afe7fd2e2a8. 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/USANG2215481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea404c3013665399bb992435991e2c9b8ff8bb6fc3dbd8bffde89c6b8a303b. 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/USANG2215482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f639ac92232d09159e47bf440b9ea9ab4e1bc9363b95ac014000590f6a9092. 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/USANG2215483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6734423055c6b35d5b86ae4991f6cc159899107e7ff4be91b2759458f99f9f5a. 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/USANG2215484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a666550a98dc83d7b6c5a45bcdd40323ef186c6f14952b154e8e57ebd0242f. 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/USANG2215485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ac75b2f861dcf8c2636860d401fde030e8b60fec77f7f7cd397b8ef8d8af4. 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/USANG2215486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57870d043741e2faa05909ab8be64a3d5f269713a4f32bac63025bf348ac9d. 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/USANG2215487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315d6d51a77abfddc03e2ecbba488418b5c5c93c7e85059f98629c25f54602e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2215488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a1e69aaf11e5ba04621285a5b27f93f6f3e27f812d77ace1a1d3b49d549393. 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/QM3DF2407503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14e944123007454279b05bd9331de4622f079e8fb7e7cec02201c4ab7395d07. 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/QM3DF2407504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2e06230a2af539194222ba890099be8a66c45d71d952fa7f18c830881b564. 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/QM3DF2407505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb514f351202f73c7226ab510b913b9e16f5075bc9fdb4dcc816435d147ff1cd. 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/USANG2122067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1575d141c55901e5a85a99fe8321a602e1bc807da5855df679a01206dcfd9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAEH1950565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8bc8b5f535d619d3daf07b15028c307e082a4f4e8e2e05ed36e49e7b0fbb1c. 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/TCADW1852693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9f5ea176e3d87dadf1cf0e7d451de44341004d487a7a9ffc276a1c3c3725aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADW1853559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742a0b706a6a109bb6e3500c2734a82a58a0852fc8cd6ddec8d121cf0e6b020. 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/TCADW1853380.