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 0x5e72f6c16ea0dcf5c368360f5a10c3e6f67ca56de1d21ae916f69d9d39419585. 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/61ca887b-b44d-4397-ad07-08285809d549.json and https://artists.proofprofile.net/proofs/artist/61ca887b-b44d-4397-ad07-08285809d549.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Jazz Background Music - Relaxing Piano Shades for Wine Bar & Cocktail Party, Youtube Music, Instrumental Piano for Dinner Party, Wine Store & Grocery Store Background Music
Lonely Friday - Piano Music, Smooth Jazz, Background Music, Italian Dinner, Ambient Lounge, Buddha Lounge
Memory – Instrumental Sad Songs, Romantic Background Music, Sentimental Music to Cry, Reflective Music for Broken Heart, Sad Piano Love Songs, Sentimental Journey
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В твоих объятиях: 30 Очаровательных мелодий Пиано-Бар
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Easy Listening Jazz: Piano Background Music for Lunch Time, Family Dinner & Restaurant
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