Risko is a surname. Notable people with the surname include: Eddie Babe Risko (1911–1957), Lithuanian-Polish-American boxer Robert Risko (born 1956), American caricature artist See also Riske Categ
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 0x36d6b40c084c8452d047719b0b6cace4a9784a88bfdebe98777b5f1c9350506c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96233348-3154-451c-9bef-41a2372cad42.json and https://artists.proofprofile.net/proofs/artist/96233348-3154-451c-9bef-41a2372cad42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).