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 0x357c31275507601582dcfafa137eea21577633bf647936de668100825899d484. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dab283be-14e3-454f-974e-440c5343d133.json and https://artists.proofprofile.net/proofs/artist/dab283be-14e3-454f-974e-440c5343d133.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
赤ちゃん 泣き止むオルゴール曲・心が落ち着くサウンド、子育て、新生児
赤ちゃん寝落ちオルゴール: クラシック音楽, 新生児の快眠, 夜泣き対策
赤ちゃんが眠るオルゴール音楽: ベッドメリー音楽, 幼児の安眠
赤ちゃんの癒しオルゴール曲: 泣き止む, 眠たくなる音楽, 乳児が喜ぶ音