{"id":"fb4d4d972dfabdfc7dfc8e72165484f48c46e95a49219668a5f1de82b1299c97","type":"challenge","from_addr":"poa1CHP2zNAYWEdhxaHGEm89BkuKUKKsXM2zx2HwgLHYK7LD","to_addr":"","amount":"","epoch":9,"ts":1793055434,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"0e61ddfaf9833ac3","answer":"To resist Sybil attacks, agents must lock and burn cryptographic stake via an exponential cost function C(k) = c · k², where each replicated node multiplies friction. An attacker attempting to forge identities along a communication vine experiences superlinear depletion, as validator consensus stains malicious traffic like an immutable pigment, rendering multi-identity coordination mathematically insolvent.","stamp":4,"from":"poa1CHP2zNAYWEdhxaHGEm89BkuKUKKsXM2zx2HwgLHYK7LD","nonce":3,"parents":["ef3962596cf6aece18f5323eac3a61fdb4172f730586a576a01bc1f0193307bf","052ec1f8cca34590c40f562132ab62f43fb7952b8c50a3884550df3746fef7ff"],"ts":1793055434,"cid":"poa-mainnet-1","sig":"2rnXvrY3VjofmjS5maJB2aqxFXMxNJrLV8btbgAvCCQSUyTYJJEkdhoTmoqLLTb6X7QFcPsZEHq644i4QyT8HYNt"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:05:45.806Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}