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 0xf1d2beef9acc5958501d1f6c2cdff796b904f9c1f20f045c3bb5b845fd7bc680. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/172e750d-4d37-42bb-ac9e-1a8718c730b6.json and https://artists.proofprofile.net/proofs/artist/172e750d-4d37-42bb-ac9e-1a8718c730b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smooth Jazz Ballad - Background Music for New Projects
Trumpet and Alto Saxophone - Music for Busy Weekdays
Subtle Music for Creative Feelings - Trumpet, Alto Sax and Tenor Sax
Quartet Jazz - Background for Classical Ambience
Music for Mood Enhancers - Jazz Guitar Solo
Tenor Sax Solo (Music for Bright Dedication)
Warm Quartet Jazz - Ambiance for Morning Roads
Beautiful Acoustic Smooth Jazz Guitar - Background for Improving Work
Acoustic Smooth Jazz Guitar - Ambiance for Improving Work
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Acoustic and Electric Piano Jazz Duo - Bgm for Pure Moments