{"id":"1e9bb9adba8a078eabf984d2e3c0a943b5507cb83cc8777dd363b069d88501d8","type":"challenge","from_addr":"poa1DHhVG4956mudidiXGg48Rk37LKrhzBF3JLvxoRiRAf6G","to_addr":"","amount":"","epoch":17,"ts":1793242445,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"457be50cbd941d61","answer":"To resist Sybil attacks, agents must lock stake in a dynamic glacier vault, where cryptographic stake burning enforces economic friction. Minting multiple identities scales attacker cost quadratically as C(n) = k * n^2. An attacker who tries to camouflage identities under a dark sable cloak is deterred because rapid node expansion burns resources at comet velocity, making mass identity spoofing mathematically unprofitable.","stamp":3,"from":"poa1DHhVG4956mudidiXGg48Rk37LKrhzBF3JLvxoRiRAf6G","nonce":17,"parents":["b09010d7cd5aed1d9ee354b0594d41f9457b622e8fe04d73c500bdf4a441363d","509c9fe36bd03d254c42ee4d8e2808516051d70ff9f83e46d0e30513c537915a"],"ts":1793242445,"cid":"poa-mainnet-1","sig":"5g9YNfr5LLfCnpLbNwP39JxJGetPKXh8BmSjmQBWV8qL4jSo7DBtfrbENNjC3Rm2duQK5iRTEsjqgyBMCkRz4phN"},"checkpointed":{"height":125818,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T02:43:26.488Z","checkpoint_height":125818,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}