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 0xa67919a2b6e33e24dfa2518ac6459c1dc11c8643d2682b02e86228f83b7e59c2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ff78ae5-1748-4a85-805c-a48811f499d0.json and https://artists.proofprofile.net/proofs/artist/7ff78ae5-1748-4a85-805c-a48811f499d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pulsating Big Band - Background for Social Distancing
Tasteful Music for Lunchtime - Trumpet Jazz
Music for Casual Restaurants - Astonishing Trumpet Jazz
Delightful Background Music for Cool Cafes
Music for Study and Summers - Sprightly Jazz Guitar Solo
Professional Jazz Uplift: Coffee Lounge Harmonies for Productivity
Piano Jazz Pet Whispers: Ethereal Melodic Connections
Dreamy Serenades for Baby Sleep: Soft Jazz Piano Melodies