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 0x6fded967b95e8ae2c0bd22c41304a20a6b7745323744d9b9dd9d5c5365297c22. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ee5b66f-4eb1-4c83-9a20-8fb78c0dea54.json and https://artists.proofprofile.net/proofs/artist/7ee5b66f-4eb1-4c83-9a20-8fb78c0dea54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
即眠りに落ちる音楽：寝るゆっくり平和サウンド・不眠改善快眠熟睡リラックス
不眠症のための眠れる音楽：不安、ストレスからの解放・眠りに誘う音楽