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 0x5fce33641d37080f05d2053a30ca51c6e9e7f2291ea30695fda3987b9b107c0e. 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/317c685b-7113-4a8d-9201-e7df78b51fc4.json and https://artists.proofprofile.net/proofs/artist/317c685b-7113-4a8d-9201-e7df78b51fc4.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 0x07944e29dfcc8f07ff4b50d2f0f035df58a789389fbbbc326be09526654dd934. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde273a08a07be7e89ec9334cecf3f48d49ee35e8fc2fc504b757adca7a13d2b8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:23Z), 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/QZNWT2289602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84ef31990fcef847ef20f8df5ec01570a5de380bb9ca97133b62277f02e1877. 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/QZNWT2289603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707772d8b3166f35a8332722ab3353927d7c36950c67d6069e89d3e2a1d6b5fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553540b8db508425f6e2b2ec7d318f575dee25648fa3e63ad421bee31ca3c172. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:23Z), 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/QZNWT2289606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682a8e4110f3d773435653e4bbbb50f3bbb2ae0892f810cb74982d7df5eb013a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7488078cd8ac64b46c91a56a11839526b4b49f08d840d6762d2a216564267a84. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c5e4c37eb2cf15782348a948ebf9b2e6182b5afb7c30fac63be6b79dd44df. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZNWT2289612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16910a475d538cdbff11d2f8fcadb71c8e985735959d3db9aab7d9ac73c25a58. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:36:39Z), 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/QZNWT2289614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ae62ec67e67133718310f3f234cc6b830bd3758d50f3832fda4357f8d8e1b4. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNWT2289615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc7f94844ae32b83617d6560a12d8075c4e13cfa5ff577378962bfade9251e4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5500c6747a967c53267b6e5a678ccd3b1009b2b1e3798f0be809318d22d57d7. 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/QZNWT2289617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44be8f9a6efa85d80597a403bfe74ef96cb9d9440622f1a1ee2a215e3923d341. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b6bc6a651507fee9b31d9ed429bf2133a16dadae0198bc698a5e24a14d1836. 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/QZNWT2289619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d794c835048b64c11543f9463d89a8032be6c6bcdce533cb7865b7f13b9b3a4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2289625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4836ebc77e412197bd72702c52c2e5c8a7796faf4eb94f7310c07ad33c1ad89a. 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/QZNWT2289628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518dcbd725b85439148cf0d41ca8020bac85546ae5cd93daad9d4a42af7325d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZRP52385668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1101ddac1d5734328c60659e64ff47f92319cfd2b2cadf0cecda7fdb23a482d7. 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/QZRP52385670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256714959853c62f1f585fcdf7939889563eee41aedf994b5292349f3eea616d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:30:02Z), 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/QZRP52385675.