Henry Allen may refer to: Politics Henry Allen Jr. (1823/24–1856), American politician, member of the Mississippi State Senate Henry Allen (Wisconsin politician), Wisconsin state assemblyman Henry C.
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 0x5ddeee0d1ca63d9a270c977a5b854d2fec46ad618a6387a9ac82f862848f4ca7. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/109d70e9-ea21-4d9b-a040-36ad5bad9385.json and https://artists.proofprofile.net/proofs/artist/109d70e9-ea21-4d9b-a040-36ad5bad9385.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Sound of Henry Allen (Original Jazz Sound)