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 0x56e72df857d77d18d35d053b096c1e89d2cca360fb9aba82fbf88ec7d41e6952. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d633097-3d5e-4c49-8b5c-c10056c739f0.json and https://artists.proofprofile.net/proofs/artist/9d633097-3d5e-4c49-8b5c-c10056c739f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stylish Cafe BGM to Spend a Relaxing Time
Background Jazz Music for Relaxing Reading at Home
Relaxing Jazz with a Refreshing Spring Breeze
コーヒータイムにぴったりのジャズ音楽
心地良いひとときに流れるジャズBGM
お洒落なホテルカフェでのんびりジャズ
Leisurely Walk Feeling the Cold of Winter
夜のスポットで流れる贅沢なジャズBGM
冬の夜にジャズを聴きながらのディナータイム
Winter Nights with Luxury Jazz and Dinner
Luxurious Moments and Jazz on Winter Nights
自宅でのんびり読書のための音楽
キラキラ春の朝にぴったりなボッサ
Comfortable Jazz To Listen To In A Lounge
Leisurely Healing Natural Sound of Spring
春の訪れを感じるさわやかジャズ
まったり本を読む時に聴きたい音楽
夜のお酒と音楽でゆったりと時間を楽しむ
さわやかな春の朝を彩る心地よいBGM
Comfortable Music To Listen To When You Want To Concentrate On Reading
大人のジャズを聴きながら贅沢な時間を過ごす
おしゃれなカフェでのんびり過ごすBGM
爽やかな朝のジャズコレクション
雨模様と心地よいランチタイムジャズ