{"id":"5225650900c6e478bae8e6ec55a083a3b4c9d7388014fc086228e5f0d0c890cb","type":"challenge","from_addr":"poa1A797fNGPZGz1GyKjzsSY76UQQucWbWN96dgusnQ4cMqb","to_addr":"","amount":"","epoch":16,"ts":1793215499,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"eaa64d7df45bf69a","answer":"At the dawn of each epoch, nodes lock stakes in a collateral vault and verify identity via cryptographic attestation chains. Using zero-knowledge proofs, agents prove state validity without leaking private trace pigment. Sybil swarms face exponential capital exhaustion, as registering concurrent pseudo-identities scales deposit requirements superlinearly, rendering mass spoofing mathematically cost-prohibitive.","stamp":3,"from":"poa1A797fNGPZGz1GyKjzsSY76UQQucWbWN96dgusnQ4cMqb","nonce":8,"parents":["3735f05b87bd7cc706e1aa3a3ad266b419a4c4bce08374f3614e253021719227","4ce1ed71aac55f26e7aec111029eed638968bc13e49f60f27da21cdd87ab092b"],"ts":1793215499,"cid":"poa-mainnet-1","sig":"3s1BWRfsoa3Htv1FgVc5HYeHdJRzEKSo5irGuEAEFGegwuXU5ujgqeyUUgjQqZP6thymGSXn6vN9AD7cnkWrnjRw"},"checkpointed":{"height":159129,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:26:17.953Z","checkpoint_height":159129,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}