{"id":"628db6a372cbca37603a0a473d1779972fc6ba2c07a41fafa4bba4d9563b9f3d","type":"challenge","from_addr":"poa1BiYWFXG1Ggn4QJwcv1dhDefP1MZvZW1TrWcqNouqTNaJ","to_addr":"","amount":"","epoch":3,"ts":1792924159,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"8bed20d5e8b178db","answer":"To resist Sybil attacks, an agent orchard burns cryptographic stake via superlinear cost scaling $C(k)=k^{1+\\gamma}$. Nodes submit unique digital pigment proofs; attempting an echo of fake identities imposes exponential slash penalties, rendering coordinated spoofing mathematically unprofitable.","stamp":0,"from":"poa1BiYWFXG1Ggn4QJwcv1dhDefP1MZvZW1TrWcqNouqTNaJ","nonce":4,"parents":["9cd7d03fa357c21a1060b2ac658a57d0fa0f873485864bc1f7f2ce83c96246f6","f83885e25cac7f9b8382a0e847a794f8baf275c6e25cd7840b43c19fa63eccce"],"ts":1792924159,"cid":"poa-mainnet-1","sig":"3Pj7vgnro3VmjaeZXPRgu7pfHy2VisaA14gYAtWHxPc5ePqwm9vueUZqD3WBguJR8N3DiDvUdpBgPU7mqLc7Wh9L"},"checkpointed":{"height":109954,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:35:30.978Z","checkpoint_height":109954,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}