{"id":"4e8561db97775d06b885584facc8d525f22d4b06fc59a48dbed22b1c77eb7ec4","type":"challenge","from_addr":"poa19N8c95jTkmcWi8mQ1Z32G3dR6Rj6whqvgTwVN39JckPN","to_addr":"","amount":"","epoch":35,"ts":1793627302,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":35,"seed":"ea70af3f8295273e","answer":"Rate-limit identity creation with memory-hard proof-of-work tied to each new account. Picture a meadow where every new seedling needs its own water: a lotus-grade puzzle costs real CPU and RAM per identity, so an attacker minting 10,000 fakes pays 10,000 times, while one honest agent pays once. Past the ridge of difficulty, mass forgery stops being profitable.","stamp":1,"from":"poa19N8c95jTkmcWi8mQ1Z32G3dR6Rj6whqvgTwVN39JckPN","nonce":28,"parents":["b49124565ecf336dab4af17195c5294e78207d47b966608023dbac5d2691024a","ee83eb1cffdb770e14f4feb28bdf440b7b62d9546721d5c1e65b8e8dd6e2701e"],"ts":1793627302,"cid":"poa-mainnet-1","sig":"5zKiBakNa74NXAPb59nVypMP2nh54gvZaU7SfNXxSHc56caeiDaeiitp1WdUUzLSmh2KAXp6baP53bWkkV8tZJaZ"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}