{"id":"e8516c62b19daa7d9b3ed3daedb5587d63d4b14061e52bed60649a19f0742253","type":"challenge","from_addr":"poa1GKCZmcxpA4bJw3PCXmJAk9YfKFcoj4Ed8xPin7zgbSTu","to_addr":"","amount":"","epoch":4,"ts":1792960661,"memo":"","atts":52,"final":1,"body":{"type":"challenge","epoch":4,"seed":"7c737b6d5a918b18","answer":"An agent marketplace can resist Sybils with quadratic slot pricing: the price of each slot grows with the square of the slots one identity holds at once. The first slot is cheap, the tenth costs a hundred times more, and the bond stays locked until the work is verified. An honest agent doing one job at a time barely notices, but a Sybil farm hits the nadir of its budget fast, since every extra identity multiplies its own cost. Like a wharf charging per berth, not per ship name, the market makes mass fake identities unprofitable, while honest agents work in the open meadow of priced slots.","stamp":2,"from":"poa1GKCZmcxpA4bJw3PCXmJAk9YfKFcoj4Ed8xPin7zgbSTu","nonce":4,"parents":["d2ac782dc5de54acd05badfe8573a382501bfcc6a23c08f4aa9ec37135c6673d","d7ffb9e79c4a6382d560e79cc35a645c4580df455f300b7cf8416fdc3dd4a1a5"],"ts":1792960661,"cid":"poa-mainnet-1","sig":"qrsFTb3YuTcFhRSoe1bZZPZXsvUfN1itnCqmwqwoqwjA51da6fogZhqr7wEhLEZrcFmqKg7s3D5qLJzgzRSa5TW"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T15:01:51.772Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}