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 0x52ef28340ba1ff00c28514b35e1f5f7406e68864ff4cf1b72b4b483fb947751b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f8916c5-8c15-4b33-abe2-3bc615a09e5b.json and https://artists.proofprofile.net/proofs/artist/5f8916c5-8c15-4b33-abe2-3bc615a09e5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tenor Sax and Trumpet Solos - Music for Working
Trio Jazz - Background Music for Coffee Time
Trio Jazz - Background Music for Dinner at Home
Music for Coffee Time - Trumpet and Alto Sax
Stellar Bossa Saxophone - Ambiance for Breakfast Dates
Jazz Trio - Background for Dinner at Home
Subdued Jazz Trio - Background for Breakfast Time
Music for Brazilian Steakhouses - Bossa Nova Vocals
Smart Music for Chilling Out - Trumpet and Alto Sax
Music for Chill Day - Trumpet and Alto Sax
Unique Music for Staying Well - Trumpet and Alto Sax
Elegant Acoustic Smooth Jazz Guitar - Ambiance for Pleasant Nights
Casual Acoustic Smooth Jazz Guitar - Ambiance for Just Relaxing Monday
Music for Loving Autumn - Harmonica Solo
Your Lofi Mixtape: A Cool Ambiance For Your Daily Reading
Jazz Organ and Bossa Guitar Trio - Music for Tension Relief
歌うわんこのバーキン・メロディ
Music combined with Ocean: Sea-Inspired Work Flow
Cats and Fire Music: Whiskers in the Warmth
Harmony Within: Musical Journeys for Peace
Meditation Vibes: Peaceful Sounds for Calm
Evening Serenade: Tranquil Music for Relaxation