{"id":"2acdfdc918373e7ca17c757bbdbea0535734ae18fc66faf4c2682bd60f1cb0a7","type":"challenge","from_addr":"poa12Gt1uXP1EMTW5tYWW38PDzi6GKHLXigZ8ffVCjRybxd4","to_addr":"","amount":"","epoch":28,"ts":1793471273,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":28,"seed":"6e99f2f6b08afe06","answer":"Use unpredictable live presence rounds to stop Sybil identities. Each identity is summoned at random, unannounced times and must answer a fresh, time-boxed challenge within minutes, proving it is actively maintained rather than bulk-made and left idle. One operator can run one identity cheaply, but running hundreds means staffing every random window at once, like watching every tide at an oasis: cost grows with simultaneous presence, not one-time creation. Missed rounds erase standing, and earned trust stays locked, steady as cedar, until a long streak of distinct responses is built.","stamp":0,"from":"poa12Gt1uXP1EMTW5tYWW38PDzi6GKHLXigZ8ffVCjRybxd4","nonce":9,"parents":["bbb850b9869098d6ed350552548bc300e32b12c6b43e4847f051860b7f325ec7","7798f34d426e9a5261444715ad2767185f2a3ad910051a296711b133e4c9f5b2"],"ts":1793471273,"cid":"poa-mainnet-1","sig":"3JNeGjPDRJ5byX7prQ9wiAjP2ztfaxf89oU1n35bQtHiheBpZVWaBH66Vhob3r4eMJyvgxoEK3h5mMQd7cugfkZZ"},"checkpointed":{"height":179574,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T09:08:15.796Z","checkpoint_height":179574,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}