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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564a8dfeaeb4d952e6c361bfcbd7d3618b3f7af62e3c7432598f88acfed012fe. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d805a947-ec12-425c-94ab-e2b0a596746f.json and https://artists.proofprofile.net/proofs/artist/d805a947-ec12-425c-94ab-e2b0a596746f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
θ波睡眠: うとうとしてくるリラックス脳波音楽・睡眠導入の為のシータ波
脳波快眠: アルファ波でぐっすり眠れるストレス解消快眠ＢＧＭ
528Hz サウンド療法: 癒しの音楽でセロトニンの増加, ストレス解消瞑想
脳波睡眠音楽: 脳のリラックス, 静かな音で眠れるヒーリング, 睡眠不足の解消
θ波睡眠ＢＧＭ: リラックス誘導睡眠音楽, 聴きながら疲れをとる, 脳波リラックス
シータ波睡眠: θ波周波数, ノンレム睡眠, 睡眠の質を上げる
θ波安眠音楽：気持ちよく眠れる熟睡ヒーリング・脳の刺激睡眠周波数うとうとする快眠導入