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 0x5ece225bbf7d7ce977d048b62eab1a5ff2df577b7b2c5e92238734d9ee26d093. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5db02c6-743a-4362-8c72-024175535f84.json and https://artists.proofprofile.net/proofs/artist/d5db02c6-743a-4362-8c72-024175535f84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LoveLive! Sunshine!! Watanabe You First Solo Concert Album 〜Beginner's Sailing〜
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 0x85aafb62c118aef757f9a5579bd9791bd0c8f94a4dddc73b5651f8857607e5f6. 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/JPI102100841.
LoveLive! Sunshine!! Second Solo Concert Album ～THE STORY OF FEATHER～ starring Watanabe You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ce01e04f0288bdc8d1bb3e32764b89422fbe8618d1e4d296b026de062dad22. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:09:32Z), 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/JPI102200639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed9476c8150e184a82fcf30e79408cd967cc669a4c8d228b04d427ed49bef0c. 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/JPI102200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b355fcdb67e8d04a879ad7940b7475099f6888caa0ecaa816f7cfa42e23babc. 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/JPI102200648.