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 0x4dbcd1d0f446630edc349157ddbb61dc42570a1f88114e815c052ccd308ef1bf. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.json and https://artists.proofprofile.net/proofs/artist/c5ce3e51-1cdf-4273-81ce-718ea978429b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Scene -Komatsu Masafumi piano works-
スターアンビエンス ～プラネタリウムのためのピアノ音楽～
イン・ザ・グリーン ～美術館のためのピアノ音楽～
スクール・メモリーズ ～マンガミュージアムのためのピアノ音楽～
パークアンビエンス ~うみほし公園のためのピアノアンサンブル~
丹鉄メロディ ~京都丹後鉄道のサウンドブランディング~
いのちのそばに 1 ~医療空間のための環境音楽~
プチピアノ 1 ~20の楽曲によるピアノ短編集~
プチピアノ 2 ~20の楽曲によるピアノ短編集~
The Sixth Sense 1 -Collaborative Works of Music and Fragrance-
The Sixth Sense 2 -Collaborative Works of Music and Fragrance-
The Sixth Sense 4 -Collaborative Works of Music and Fragrance-
The Sixth Sense 3 -Collaborative Works of Music and Fragrance-
The Sixth Sense 7 -Collaborative Works of Music and Fragrance-
The Sixth Sense 8 -Collaborative Works of Music and Fragrance-
The Sixth Sense 6 -Collaborative Works of Music and Fragrance-
The Sixth Sense 5 -Collaborative Works of Music and Fragrance-