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 0x4d1f8071566e0a76fec19490a45afbe0b04cecff5969deb0d7ddb31e774d7a9c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50f4db38-0bbf-46b7-a7d4-f20374f810e3.json and https://artists.proofprofile.net/proofs/artist/50f4db38-0bbf-46b7-a7d4-f20374f810e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
時間を忘れるゆったりとしたジャズ
Refreshing Spring Music to Enhance Productivity
暖炉のそばで贅沢なジャズとディナータイム
Winter Night with Jazz, Wine, and Wonderful Dinner
Jazz BGM For Enjoying Time With Music And Wine
ゆったりと心が落ち着く夜のジャズ
本を読むときに聴きたい雰囲気の良い音楽
Instrumental BGM to Listen to When Concentrating on Reading
Quiet and Relaxing Background Music for Reading
湯気立つカフェで聴きたいジャズBGM
スムースジャズと共に過ごす雨の読書タイム
夜のカフェで贅沢な時間を楽しむジャズBGM