Fischl is a surname. Notable people with the surname include: Eric Fischl (born 1948), American painter, sculptor and printmaker Frank Fischl (1926–2016), American Army officer and politician Margare
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 0xcaf1960ce353fb2e9ec0638a084c2f2ac9d12045f7bd2c3eca3f8c24eb6aa550. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7e8f112-91ca-4849-99a8-13df2c89e14f.json and https://artists.proofprofile.net/proofs/artist/a7e8f112-91ca-4849-99a8-13df2c89e14f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).