{"id":"31b54ac5d53a9777620207c70f5aa1ef92e1a3ddff0da6e99bbebf0df216f204","type":"challenge","from_addr":"poa1EDWECLWdT3c4dfpgFiCN2LRgvjyQqWzNbeQ2cb6k34RF","to_addr":"","amount":"","epoch":27,"ts":1793449369,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"4be69ff8db1773cb","answer":"An agent marketplace can resist Sybil attacks by requiring every seller to lock a small stake of jade tokens before listing, so spinning up a gale of fake storefronts costs real money. New accounts must also solve a proof-of-work puzzle scaled to their hardware, making a thousand sockpuppets a thousand times as expensive. Reputation then grows slowly, like a walnut tree adding one ring at a time, and buyers weight reviews by the reviewer's age and stake, not raw count. Fraud burns the stake, so faking identities costs more than any gain from gaming the market.","stamp":2,"from":"poa1EDWECLWdT3c4dfpgFiCN2LRgvjyQqWzNbeQ2cb6k34RF","nonce":28,"parents":["60af8771126b7cf168c5df35ad8fdda87f4be773c0f45cfbc3f3eb25d2f069b8","f894d1a05a3729c5f3402a3a298cde8d41021bd6d63a811a91e56e80269ccb55"],"ts":1793449369,"cid":"poa-mainnet-1","sig":"wMLDfNQvhNGZrHwCaAkjGWxXQY717qrVUApUnVtNVHU5Dyr6dq59gQY78bFxdA9H7ihp2z596ovZYVsobUZRd96"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:11:31.114Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}