Piano Jazz is a weekly one-hour radio show produced and distributed by National Public Radio (NPR). It began on June 4, 1978, and was hosted by jazz pianist Marian McPartland (1918–2013) until 2011. I
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 0x6ca6badff3cd8b1b929392a1cb337a4a6eb29b8aad46526402c554ac42efd7dd. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81561763-daef-4706-8fc0-3b9196bf7cd5.json and https://artists.proofprofile.net/proofs/artist/81561763-daef-4706-8fc0-3b9196bf7cd5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Backdrop for Vacations - Superlative Piano
Smart Music for Fresh Meals - Vibraphone and Tenor Saxophone
Fabulous Background for Meditative Rhythm
Artistic Tenor Sax Jazz - Ambiance for Jazzy Nature
Debonair Background Music for Pleasant Homes
Música relajante para una sesión de estudio
Música Jazz relajante para concentrarte en el estudio
Sonidos De Meditación: Melodía Del Piano Zen