Seymour Lipkin (May 14, 1927 – November 16, 2015) was an American concert pianist, conductor, and educator. Early life and piano career Lipkin was born in Detroit. At age 11, he entered the Curtis In
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 0x6535bad71de0aecb9d2747c18175d297d53fffae1462f3d0179793627fa4aef3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/623b442b-9b18-4313-8205-dda8326ab0d3.json and https://artists.proofprofile.net/proofs/artist/623b442b-9b18-4313-8205-dda8326ab0d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strauss: Don Quixote, Op. 35 - Stravinsky: Concerto for Piano and Wind Instruments
Beethoven Complete Piano Sonatas Volume One: Sonatas 1-10
Diamond: The World of Paul Klee (Recorded 1960)