The Yale Russian Chorus is a tenor-bass choral ensemble at Yale University, established in 1953 by Denis Mickiewicz, a student at the Yale Music School, and George Litton, president of the Yale Russia
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 0x055888733b5b8ee539977753d151109008918ed85dfae1695a2e95a67e8f0757. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/870abd48-7fab-467e-9beb-89b7971e79f1.json and https://artists.proofprofile.net/proofs/artist/870abd48-7fab-467e-9beb-89b7971e79f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mnogaya L'eta: 65 Years of the Yale Russian Chorus
Юбилейный Концерт, Посвященный 25-Летию Хора (Духовная Музыка)
Yale Russian Chorus 25th Anniversary Concert 1978, Live in Woolsey Hall
Mnogaya L’eta! 65 Years of the Yale Russian Chorus, Vol. 2: Russian, American, and Other Songs