Henry Vahl (26 October 1897 – 21 July 1977) was a German stage, film and television actor.Ball & Spiess p.162 From 1958 he was a star of the Ohnsorg-Theater in Hamburg. His younger brother Bruno Vahl-
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 0xd45ee0da3a5999e0d0f929c3baa68a37c676d1c0f74d2abf588789cec1fb1b1a. 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/670b64c2-676a-4bba-be04-8327b7794ca3.json and https://artists.proofprofile.net/proofs/artist/670b64c2-676a-4bba-be04-8327b7794ca3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).