Irving Actman (June 2, 1907 – September 24, 1967) was an American conductor, musical director and composer. He is known for his work in film and on Broadway musicals, most notably as the music directo
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 0xbb3179ed49bd6899a4fd8ecbe36581e69bb704e41a55aa9ce2424699407e6bd1. 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/5e456270-a54e-4373-8188-a237d0d46bd0.json and https://artists.proofprofile.net/proofs/artist/5e456270-a54e-4373-8188-a237d0d46bd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Broadway Cast Collection, Vol. 6: Frank Loesser – Guys and Dolls & How to Succeed in Business Without Really Trying (Digitally Remastered)