Richard Toensing (March 11, 1940 - July 2, 2014) was an American composer and music educator. He studied composition at St. Olaf College and the University of Michigan, Ann Arbor, where he earned the
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 0x6185bf1fa232d0510d1f3f23421ec684f2faf3bc379679cf3948efe4b4cebb32. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb86308d-3d25-495a-b4c1-65146acc902e.json and https://artists.proofprofile.net/proofs/artist/cb86308d-3d25-495a-b4c1-65146acc902e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Toensing: Kontakion for the Nativity of Christ
Night Songs: The Music of Richard Toensing