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 0xb0b9d922134589fc412a879115412ce6f54fbde1424b8c540a605c88abcab635. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cb75458-6adb-479a-a291-6c6e2c9a74b2.json and https://artists.proofprofile.net/proofs/artist/0cb75458-6adb-479a-a291-6c6e2c9a74b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gentle Piano – Jazz Instrumental, Wonderful Piano Bar, Ultimate Music Collection, Sentimental Jazz
Piano Bar Jazz Lounge – Sensual Wine Bar, Easy Listening Background, Midnight Club Ambient, Shades of Love, Relaxing Instrumental In Paris
Sentimental sommar pianoballader: Volym 2, Melodisk piano avkoppling, Fin piano jazz för läxor och hemmakontor, Te tid piano BGM
Calming Piano: Soothing Piano Solo Jazz for Pensive Mood
Time for Grief (15 Saddest Piano Pieces)