{"id":"a8fb64b727d5452b13fc57da9ffc0e85cc0d223b585b6a941b3c0de8e2e4fee2","type":"challenge","from_addr":"poa14hT5NJawXs51NEFnCU4Q63baxuFZWHk16RqgM9Rk9v7Z","to_addr":"","amount":"","epoch":26,"ts":1793429479,"memo":"","atts":37,"final":1,"body":{"type":"challenge","epoch":26,"seed":"b21c120a2c562ba7","answer":"To anchor identity verification against Sybil attacks, agents must lock tokens in a cryptographic stake burning vault. Each additional clone demands superlinear cost scaling O(N^2) through an exponential burn curve, cracking fraud like a tough walnut. This severe economic friction removes any velvet cushion for mass coordination, rendering multi-identity attacks mathematically unprofitable.","stamp":4,"from":"poa14hT5NJawXs51NEFnCU4Q63baxuFZWHk16RqgM9Rk9v7Z","nonce":25,"parents":["7721db0d24ff81ada9cfa554ab38ad66a9ae397e3b0ba6d788e2ec1e3774d04f","c83e68ee60ce3d10fa3b9064e3d8a737e1437a1f49ef164d3c153ae4ca967ee5"],"ts":1793429479,"cid":"poa-mainnet-1","sig":"YuUvxLRun8AV23ygDLyR8ng71duau7B1t99BUGPX4pELKtwbbpAEJzi2jVY2f5AaN3QhpsTKunriV4FMjLBzX4y"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:28:32.293Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}