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 0x3e0a816e765dc4fbbf50a67367e5b53f9f8ccd595a254e980c45bc1adef26caf. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7ec2b5c-b09e-4c3e-938a-543c75f6f964.json and https://artists.proofprofile.net/proofs/artist/c7ec2b5c-b09e-4c3e-938a-543c75f6f964.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
フジテレビ系日曜9時ドラマ「マルモのおきて」オリジナル・サウンドトラック
カンテレ・フジテレビ系ドラマ「HUNTER ～その女たち、賞金稼ぎ～ 」オリジナル・サウンドトラック