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 0x444032c3d45c6413e82c96a5e51abf2722ac9462279af29b811d9956b2bad386. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3df98408-af2a-40a4-98ca-f8a7fcbf12a1.json and https://artists.proofprofile.net/proofs/artist/3df98408-af2a-40a4-98ca-f8a7fcbf12a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ソナチネアルバム1 vol.1 アキラの音楽空間リメイク
Sonatinen Album 1 vol.1 Akira's Music Space Re:make
Sonatinen Album 1 vol.2 Akira's Music Space Re:make
ソナチネアルバム1 vol.2 アキラの音楽空間リメイク
お人形の夢と目覚め アキラの音楽空間リメイク2019
Dolly's Dreaming and Awakening - Remake from Akira's Music Space
Sound of Harpsichord - Notebook for Anna Magdalena
サウンド・オブ・ハープシコード アンナ・マグダレーナのための音楽帳
Sound of Harpsichord - Nannerl's Music Book