Ernst Marischka (2 January 1893 – 12 May 1963) was an Austrian screenwriter and film director. He wrote for more than 90 films between 1913 and 1962. He also directed 29 films between 1915 and 1962.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6effe8d96f26d412478f8c7abc5e9a7bb58b4973d50470b112de5fc337e94fc0. 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/76f5a71f-5bfa-49c3-842b-7ad24de9df98.json and https://artists.proofprofile.net/proofs/artist/76f5a71f-5bfa-49c3-842b-7ad24de9df98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).