Cynthia Nan Sayer (born May 20, 1962) is an American jazz banjoist, singer and a founding member of Woody Allen's New Orleans Jazz Band. Career A native of Waltham, Massachusetts, Sayer spent her ear
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 0xfec3045a436eabe21f9c43364c6bf47022d24ecb9eb8ac9c432b04648f5221bd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42fa75ae-ee36-4895-af69-c32f58afd315.json and https://artists.proofprofile.net/proofs/artist/42fa75ae-ee36-4895-af69-c32f58afd315.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Forward Moves (feat. Kenny Davern & Vince Giordano)
Cynthia: The Jazz Banjo of Cynthia Sayer, Vol. 1 / More Jazz Banjo, Vol. 2 (Remastered)
All in Good Time Concerto: I. Indecision / II. Mystery III. / Why Not