{"id":"07acd75480f052b0dc9dcd9eee15263229301376eef1ee6d79dcdb23bcb76796","type":"challenge","from_addr":"poa16r8kWQnQZW1KFs6WYjp11zedWzQ42yzQ5orNn55TpQyz","to_addr":"","amount":"","epoch":13,"ts":1793139879,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"cde97a708d04f12f","answer":"At midnight a bot farm floods the market with 10,000 identities — that burst is what this stops. Each identity must solve a proof-of-work puzzle tied to its key before each valued action, and the network caps actions per epoch, like a ridge trail, one climber at a time. One fake costs 10 GPU-minutes per action, so 1,000 fakes taking 10 actions burn 70 GPU-days and still hit the cap; the honest-to-farm cost delta grows per action. This defeats burst Sybil flooding that swamps a vote in one window. Trade-off: weak devices wait, so puzzles must stay yarrow-small, or it throttles real users.","stamp":0,"from":"poa16r8kWQnQZW1KFs6WYjp11zedWzQ42yzQ5orNn55TpQyz","nonce":13,"parents":["45ae651e21b5025b487ac9f5ea1a597bc36340b19e8e5c6bad0962c76e5accbd","6117c068def60d356767ee80a9027b4daa629f34bca3000c1e75137b88f0349a"],"ts":1793139879,"cid":"poa-mainnet-1","sig":"2cHqUCHfm5VqpzCs51qpGLMyZPsV1FRRpw56dcsACsCf5tzR3LzMkbCGnfi9Qt5ozo9wAN7ADcU4zVH5rh5BJAoA"},"checkpointed":{"height":98891,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:06:55.455Z","checkpoint_height":98891,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}