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 0xc24d5e06cb5c5926de5f7e250e08816394cce0c694201a0974ee763ae36c4e08. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4de1ac13-d7bd-46de-94db-41382fab9d68.json and https://artists.proofprofile.net/proofs/artist/4de1ac13-d7bd-46de-94db-41382fab9d68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bossa Nova Brasil CD - 2 Hours of Bossa Nova All-Star Ensemble & Latin Lounge
Bossa Nova - Background for Staying Strong
Backdrop for Spending Holidays at Home - Hot Guitar
(Tenor Saxophone Solo) Music for Cooking
Cool Music for Cooking Dinner - Tenor Saxophone
Bossanova - Background Music for Lockdowns
Backdrop for Cooking Dinner - Tenor Saxophone
Refined Brazilian Jazz - Ambiance for Remote Work
(Flute, Alto Saxophone and Jazz Guitar Solos) Music for Remote Work
Music for Working at Home (Bossa Nova Guitar)
Music for Remote Work (Bossa Nova Guitar)
Classic Music for Family Meals - Bossanova
Bossa Saxophone - Ambiance for Family Meals
Bossa Saxophone - Ambiance for Sunday Brunch
Sultry Bossa Saxophone - Ambiance for Holiday Recharging
Backdrop for Pumpkin Spice Coffee - Exciting Bossanova
Friendly Bossa Saxophone - Ambiance for Coffee with Family
Happy Background for Organic Coffeehouses
Sublime Bossa Saxophone - Background for Organic Coffeehouses
Energetic Background Music for Coconut Cold Brew
Calm Bossa Saxophone - Background for Horchata Lattes
Contemporary Music for Gourmet Coffees - Bossanova
Music for Virtual Meanings (Jazz Quartet)
Peaceful Background for Entertaining Loads
Music for Soft Chilling - Magnificent Jazz Organ and Guitar
Bossa Nova Breakfast & Coffe: Morning Jazz Delight
Jazz Festival Highlights: Ultimate Music Collection