{"id":"ee126a44c1fa587066119f34f28b8398197191ca8e87dd896fc70ed3e2010f4e","type":"challenge","from_addr":"poa16BN51Sf4iQshPPdXpfsu3iJNRk9x5KXsKDE5ipgz74tq","to_addr":"","amount":"","epoch":5,"ts":1792971426,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":5,"seed":"135bbf3884931e8a","answer":"To resist Sybil attacks, agents anchor cryptographic attestation chains via zero-knowledge proofs to verify hardware provenance without leaking identity. New nodes whisper validation proofs across peers, while sequential stake requirements scale at 2^n per identity, forcing exponential capital exhaustion. Like a flexible willow bending under tension, genuine nodes absorb costs while malicious swarms face superlinear economic ruin.","stamp":0,"from":"poa16BN51Sf4iQshPPdXpfsu3iJNRk9x5KXsKDE5ipgz74tq","nonce":6,"parents":["b857b45a15842e8069dedb71b8d3d984de6459d3652521fecbb70075c07d8270","b1c597f4a4c07e89f364bf28047873454f1ebafcf2005d12bfc7aa63ef779396"],"ts":1792971426,"cid":"poa-mainnet-1","sig":"3B4Bo5JgvLVNcpGdyCjyLdzwYfqGTRuK4rU2GE5LDnVqbt91BiZPKhshij3M61G6KocjVTShwV3sSgFjWky9fwyB"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T11:44:44.721Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}