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 0x25f48e6f6151f5deca9e309c57ba853afe3763d24d971222f36d658a9c143ab3. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/113ad21e-c0b5-4dc6-8384-8abb658b083a.json and https://artists.proofprofile.net/proofs/artist/113ad21e-c0b5-4dc6-8384-8abb658b083a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
クリスマスの夜に心地良いジャズを
おうちカフェでのんびりJAZZを楽しむ
ひとりの時間を過ごすためのジャズBGM
Jazz BGM For A Relaxing And Luxurious Time
The Rhythm of Blooming Seasons and New Beginnings
BGM to Improve Study Efficiency in the New Life of Spring
BGM When You Want To Concentrate On Reading
クリスマスディナーJAZZ - 家族や仲間と過ごす楽しいひと時
Calm Jazz You'd Want to Hear on Christmas Night
プレミアムコーヒーとジャズのコラボレーション
イタリアンカフェで流れるジャズ
Jazz Music in The Quiet Sunlight Through The Trees
おしゃれなカフェでジャズを聴く
Dream Bossa Nova Played in a Relaxed Atmosphere
贅沢な音楽でゆったり過ごす時間
The Best Music for Reading Time by Listening to
Jazz To Listen To In A Stylish Lounge At Night
夜のリラックスタイムのためのジャズBGM
書籍を読むときに聴きたいジャズ
Comfortable Background Music To Listen To When Reading
読書に集中できるお気に入りの曲