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 0x26605029c83f9ab9b1ea854f16f4148704e334b705830b7e979303d94c15ee08. 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/7512f800-769f-4001-bcf9-f8bc213faacc.json and https://artists.proofprofile.net/proofs/artist/7512f800-769f-4001-bcf9-f8bc213faacc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Backdrop for My Favorite Coffee House - Jazz Organ and Guitar
Jazz Organ and Guitar Solo (Music for Night-Time Reflections)
Wondrous Background Music for Summer and Relax
Amazing Jazz Trio - Ambiance for Mellow Junes
Classic Bari Sax Jazz - Bgm for Cafe Summer
Tenor Sax Jazz - Ambiance for Cafe Summer
Tenor Sax Jazz - Ambiance for Summer Songs
Exciting Tenor Sax Jazz - Ambiance for Summer Novels
Music for Refreshed with Ice Coffee - Jazz Quartet
Swanky Jazz Trio - Background for Deep Summers
Suave Background Music for Mornings Study Session
Music for Quiet Loungers (Jazz Guitar Solo)
Distinguished Music for Cold October Nite - Latin Music
Music for Cold October Nite - Latin Music
Distinguished Music for Classy and Coffee - Acoustic Guitars
Guitar Trio - Ambiance for Reflection Sounds
Distinguished Guitar Trio - Background for Infinite Days
Peaceful Trio Jazz - Bgm for Respectful Flashbacks
Music for Repeating Nights - Bubbly Jazz Organ and Guitar
Music for Reflection Sounds - Distinguished Bossa Guitar Trio
Groovy Music for Daylight Boosts - Bossa Guitar Trio
Music for Inspiring Notes (Jazz Quintet)
Jazz Violin - Ambiance for Rainbow Times
Piano Bossa Duo - Background for Golden Yesterday
Simple Organic Guitar Music - Background for Sunshine Memory
Debonair Bossa Nova Piano Duo - Bgm for Timeless Pleasures
Piano Bossa Duo - Ambiance for Golden Yesterday
Piano Bossanova Duo - Music for Golden Yesterday
Backdrop for Successful Wishes - Magnificent Acoustic Guitars
Backdrop for That Familiar Feeling - Funky Latin Piano Jazz
Wicked Easy Listening Piano - Background for Absolute Motivation
Easy Listening Piano Music - Bgm for Absolute Motivation
Music for A Lonely December - Contemporary Latin Music
Backdrop for Calm December Days - Latin Music
Latin Trumpet - Background for Sleepy Winter Nights
Fun Latin Trumpet - Background for Calm December Days
Music for No Stress December - Friendly Latin Music
Superlative Latin Trumpet - Background for Mellow Out December
Music for Mellow Out December - Sophisticated Latin Music
Backdrop for Mellow Out December - Excellent Latin Music
Cultivated Background Music for January Nostalgia