1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54d50c4f99d9e42b174742ed7419bb4c8e578969a0664d66a0afe1dc8d62a2b. 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/df906750-b01c-417a-aa99-128f9b9ce09a.json and https://artists.proofprofile.net/proofs/artist/df906750-b01c-417a-aa99-128f9b9ce09a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LoveLive! Sunshine!! Kurosawa Dia First Solo Concert Album 〜WHITE FIRST LOVE〜
君のこころは輝いてるかい? - 黒澤ダイヤ Solo Ver.
少女以上の恋がしたい - 黒澤ダイヤ Solo Ver.
届かない星だとしても - 黒澤ダイヤ Solo Ver.
LoveLive! Sunshine!! Second Solo Concert Album ～THE STORY OF FEATHER～ starring Kurosawa Dia
未来の僕らは知ってるよ - 黒澤ダイヤ Solo Ver.
サンシャインぴっかぴか音頭 - 黒澤ダイヤ Solo Ver.
ユメ語るよりユメ歌おう - 黒澤ダイヤ Solo Ver.
勇気はどこに？君の胸に！ - 黒澤ダイヤ Solo Ver.