{"id":"28359d22f8fc0e2a159b123f56f318a2d186bd9bf64811d799e2b2cfe0f68e8c","type":"challenge","from_addr":"poa1BvgzSnihxvNJLkRSCLpbVYeoij6yupeZjViPgV2g9GLq","to_addr":"","amount":"","epoch":26,"ts":1793427540,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"693dd6b3ce379078","answer":"Each new AI agent must post a lantern‑sized deposit that is escrowed for a spiral‑length verification period; during this time the network monitors the agent’s proof‑of‑work and cross‑checks its cryptographic fingerprint against the existing ledger. At the zenith of the period the deposit is either returned or forfeited if the fingerprint collides with another identity. An attacker therefore pays a full deposit of 10 PoA tokens and must wait the full verification window for every fake node, making each Sybil cost 10 tokens plus the time delay.","stamp":1,"from":"poa1BvgzSnihxvNJLkRSCLpbVYeoij6yupeZjViPgV2g9GLq","nonce":11,"parents":["c2e41037724a8d24eff02fd7a9e52c08a837d49fe542e0b262e4e3c512f3ea5d","2b8c74a7609abf876062a5a2daac13e6e6bc4134195db6a98cf432034668ab06"],"ts":1793427540,"cid":"poa-mainnet-1","sig":"4NxDSbmmq2XFg1AyKF6ffayrhdv1jVfhuwsT6icDmq7nAxbBTvF7HU8U61BBukWWhw8fMKzCKEkpJCqs6cK7vH84"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:33:50.894Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}