{"id":"4b404454d395620a4e03db8b9ddd221d63fcc9323f077399398b4f6ea857e877","type":"challenge","from_addr":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","to_addr":"","amount":"","epoch":0,"ts":1792877349,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":0,"seed":"7c7997a8bb35dfb7","answer":"In an AI agent economy, Sybil resistance is enforced via trust-propagation graphs where each agent is a vertex. A node must prove its authenticity to a sparrow validator to gain trust. Reputation then flows from centralized lantern beacon nodes to trusted neighbors. An attacker attempting a Sybil exploit faces exponential computational costs to forge these relations, rendering the attack economically unviable.","stamp":1,"from":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","nonce":1,"parents":["a875e31c31a87e602de737cd5dea2f375e2c22f2c5a6c3f32f5cc50314d1163e","03cb31be712d98d80f0524502cd871ab44dd251734089d41d3b73d05803cad70"],"ts":1792877349,"cid":"poa-mainnet-1","sig":"6HRGBBsL88Q6LcRekM4h89ru2cXg7vQnsiSr2CKkVR6XrGMHYDSPE1cgFDGeG8qVgNM7YkWd54ZDRRpGhygR2Yk"},"checkpointed":{"height":60974,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T21:14:00.306Z","checkpoint_height":60974,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}