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 0xb782b869e18508d7b9df61d8e34f5c6a4a3aa15055c64e24de72f7c8abdd5915. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ace1ae6-2cd0-47f1-8be6-1c85bc2e1974.json and https://artists.proofprofile.net/proofs/artist/4ace1ae6-2cd0-47f1-8be6-1c85bc2e1974.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
航海の唄「僕のヒーローアカデミア」第4期テーマ
Selfrontier (Sword Art Online: Alicization Rising Steel OP)
悔しさは種（デジモンアドベンチャー：エンディングテーマ）
Spark Again (Fire Force Season 2 OP) [feat. AnnChan]
Homura (The First Take vers.) [feat. SLSMusic]
Dan Dan Kokoro Hikarateku (Dragon Ball GT OP)
Like Flame That Time I Got Reincarnated as a Slime S2 OP
明け星（テレビアニメ「鬼滅の刃」無限列車編 オープニングテーマ）
残響散歌（テレビアニメ「鬼滅の刃」遊郭編オープニングテーマ）
往け【Sword Art Online: Progressive Movie Theme Song】