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 0xe074d5c163196eaece17a2bd016853bcaa0ce7bbe9541816d2896c0819ccba3d. 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/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.json and https://artists.proofprofile.net/proofs/artist/d6c80fa1-4e22-4fdc-8ce0-f55ab21644fa.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Original Soundtrack from the serial drama "Yume wo Ataeru"
日本テレビ系水曜ドラマ「高嶺の花」オリジナル・サウンドトラック
Born to be a Flower Original Soundtrack (Takaneno Hana Original Soundtrack)
名付けようのない踊り (Unnameable Dance) [Original Soundtrack]