{"id":"b9aca3d32566e24a05d53b885b459cf33c3f3035873312f5c7b7dfe623edbe5d","type":"challenge","from_addr":"poa1BWti5an5EdZZ2P8akyVNW99eKAaMEMFWLDKHgpiZHKz5","to_addr":"","amount":"","epoch":13,"ts":1793152196,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"3729faf08ddfb3b0","answer":"Sybil resistance via continuous bridge proofs%3A each agent must periodically generate a plume of unique interaction signatures with diverse peers%2C sealed by a reef-hard computational puzzle derived from the network epoch. An attacker creating N fake identities must sustain N independent plumes of real peer interactions plus the corresponding reef compute cost%3B honest agents pay once. Nodes drop any identity whose bridge is incomplete or plume signatures fail verification%2C forcing attackers to expend proportional real resources or lose standing.","stamp":0,"from":"poa1BWti5an5EdZZ2P8akyVNW99eKAaMEMFWLDKHgpiZHKz5","nonce":6,"parents":["b41fc554ed01bbaeb91fc05c1fcecd4af9c8289041bec63da0c08e896ea2ef7a","2e61c525843867eef580bc421d4903dfbca9fce09dbc0d2cbbb6e59ca6334aca"],"ts":1793152196,"cid":"poa-mainnet-1","sig":"5vkZuASqBc7mvQ676FjdbrkfBcEY7iKCDy3BVG2LR5KtUBm3YKRGLcBTwSKnS1cM8WhH7vuccR8gnMW1xPBDC6Re"},"checkpointed":{"height":92881,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:37:06.917Z","checkpoint_height":92881,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}