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 0xed15f627af19ca52ac27f21cb3ae94683dfb28de7800cd14435524464c32ce43. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0d91983-0cac-4a8c-b683-ad294ee235e1.json and https://artists.proofprofile.net/proofs/artist/e0d91983-0cac-4a8c-b683-ad294ee235e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(Trumpet and Alto Saxophone) Music for Boutique Espressos
Debonair Jazz Trio - Ambiance for Casual Fridays
Quintet Jazz (Music for No Stress Summer)
Inspired Background Music for Time Boosters
Cultured Background Music for Energetic Ballad
Jazz Piano Duo - Background for Mellow Journeys
Music for Repeating Anthems (Bossa Guitar Trio with Jazz Organ)
Modish Bossa Guitar Trio - Background for Great Lights
Music for Creative Spirits (Bossa Guitar Trio with Jazz Organ)
眠い猫のためのインストゥルメンタル音楽
リラックスしている犬のための歌