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 0xb4dc890c64f3e3948adef9f73ed44700632d90fff1e76b9dfe5c055fd872110c. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b949381f-924e-4a3a-8f3f-4cac4bdcbbeb.json and https://artists.proofprofile.net/proofs/artist/b949381f-924e-4a3a-8f3f-4cac4bdcbbeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Distinguished Background for Ordering In
Jazz Trio - Background for Dinner at Home
Tenor Sax Jazz - Background for Pumpkin Lattes
Phenomenal Quartet Jazz - Bgm for Silent June
Music for Thoughtful Time (Bossa Guitar Trio)
Incredible Guitar Trio - Ambiance for Thoughtful Time
Music for Study Shapes - Sprightly Bossa Guitar Trio
Piano Jazz Duo (Music for Thinking Shadows)
Wonderful Background for Needful September
愛犬のためのくつろぎの冬の音楽
エスケープ・安らぎサウンドトラック
Echoes and Shades: Jazz Piano Chronicles
Soothing Piano Music for Restful Night Slumber
Downtown Jazz Nights: Soulful Rhythmic Vibes