was a Japanese jazz composer and pianist. Maeda learned piano as a young child, and moved to Tokyo to play and arrange jazz professionally in 1955. There he played with Shungo Sawada's ensemble and
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 0xfdb4184728362ffac2cecb959aad425dc4c41e6b5aa83a37acae3b50ab0061db. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d50eb3b9-af67-46c0-b094-da8a2e8035f3.json and https://artists.proofprofile.net/proofs/artist/d50eb3b9-af67-46c0-b094-da8a2e8035f3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
映画「3000キロの罠」オリジナル・サウンドトラック
PIANIC PIANISM Volume II - SUPER TRI PIANO
Crusher Joe Original Motion Picture Soundtrack