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 0xaa7f2912d9507491043920552bfd1449f6209bd86b61f77325454635e45eddde. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9382dd07-ef55-438e-84cc-4c9f1d376c5d.json and https://artists.proofprofile.net/proofs/artist/9382dd07-ef55-438e-84cc-4c9f1d376c5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Home Cooking - Wondrous Bossa Nova Guitar
Backdrop for Working from Home - Astonishing Bossa Nova Guitar
Quartet Jazz - Background Music for Early Monday Dinner
Quartet Jazz - Background Music for Enjoying Lunch
Uplifting Music for Lunch with Co Workers - Soprano Sax Solo
Retro Jazz Violin - Ambiance for Summering with Jazz
Music for Summer Work Modes - Jazz Guitar Solo
Jazz Piano Duo - Background for Comfortable Moments
Acoustic and Electric Piano Jazz Duo - Bgm for Jazzy Oceans
Piano Jazz Duo (Music for Entertaining Ways)
Backdrop for Invisible Coffee - Uplifting Piano Duo
Jazz Quartet - Background Music for Favorite Lullaby
Trumpet Bossa - Ambiance for Cool Autumn
Mind-blowing Music for Cool Autumn - Trumpet, Soprano Sax, Tenor Sax and Guitar
Music for Slacking Off Sundays - Fun Piano Duo
Friendly Acoustic and Electric Bossanova Piano Duo - Ambiance for Calm Tastes
Acoustic and Electric Bossa Nova Piano Duo - Bgm for Chill Coffee Houses
Refined Jazz Piano Grooves: Work Music to Get You Through the Day
Espresso Beats Rendezvous: Rich Jazz Music
Jazz Music Constellation: Starry Harmonies
Mellow Jazz Vibes for Relaxing Calm Atmosphere