Erich Kestin (25 June 1895 – 22 May 1969) was a German actor. He appeared in more than 50 films shows between 1930 and 1953. Selected filmography Dolly Gets Ahead (1930) The Shot in the Sound Film
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 0xe78da2dfffbfe27ed9c74e73790165099e4a0f7d439f4fd4fe72ebe2ea472628. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f106a592-ab69-4ca6-afa1-51abd4fa6bf4.json and https://artists.proofprofile.net/proofs/artist/f106a592-ab69-4ca6-afa1-51abd4fa6bf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).