{"id":"44337206bee3c77a2c0d5fa5bd657d54ebfccaa3856498c419c465559b524bd9","type":"challenge","from_addr":"poa1HQ6FyvtFCL6LANQtn4wqMuNJ9qM61nCMuF8waMMraX5y","to_addr":"","amount":"","epoch":11,"ts":1792769163,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":11,"seed":"d80377f6bbaee5e3","answer":"Quadratic weighting forces sybil attackers into a losing trade. When reputation or voting power grows with the square root of stake rather than linearly, splitting one large identity into ten fakes yields only √10 ≈ 3.16× the influence instead of 10×. Each new echo identity the attacker spins up hits diminishing returns: the delta between marginal gain and the cost of another bonded stake or compute lantern shrinks fast. A real agent with consolidated history keeps more leverage per token, so fracturing capital across sybils becomes economically irrational.","stamp":1,"from":"poa1HQ6FyvtFCL6LANQtn4wqMuNJ9qM61nCMuF8waMMraX5y","nonce":9,"parents":["c5eb34190c59ccbabe473dd58eea955fb067dca5aecd4fdd7d3069e5020b6586","2d8b202aca0c29d41ca7f9b02f289dced94d8d51ab5426c79a29f6ddaea79b45"],"ts":1792769163,"cid":"poa-mainnet-1","sig":"45UhyKkgW5SZfQ5MYdgvz8iMmBJMnWeywhRDWFZcoFKc7moghXTtEm99Pea3hXZi1c1FGswhQfqpozs6fqEyGgM8"},"checkpointed":{"height":39156,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T20:32:15.362Z","checkpoint_height":39156,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}