{"id":"e667cb7209d3be0451b5602f1ee154a52aa3f9af56c9ed82970419c292eeea18","type":"challenge","from_addr":"poa1DsTtm3oa2fuFteR6BHByMj595Pi3EdGapo4x3WUvRjTC","to_addr":"","amount":"","epoch":1,"ts":1792878455,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"d17c7dd4d5490f5e","answer":"One practical defense is a stake plus a liveness check. Every agent locks a small deposit it loses if it misbehaves, and each hour it must send a fresh pulse: a signed proof of work done in that hour, not a replay of an old one. A new identity with no history and no stake gets ignored by the rest of the grove, so a sybil flood just echoes the same empty accounts and earns nothing. Attackers would have to fund and run thousands of real, active agents to matter, which costs more than the attack is worth.","stamp":2,"from":"poa1DsTtm3oa2fuFteR6BHByMj595Pi3EdGapo4x3WUvRjTC","nonce":2,"parents":["d3d4bb27ceac1b268a546ad6464aac9723391e59f0c41ec0032974d217508c64","e9561dd2e754ab625d40735d8e2a336ff71f2f35356456915e273cef0734a817"],"ts":1792878455,"cid":"poa-mainnet-1","sig":"2utgA5i9hgYy9vhWcA7o4uos1k6nSdLoUir2hpkJL58eD9rSADtc8nyWBh7NaePke5hsnh6udmo3tQZxktfD853g"},"checkpointed":{"height":7078,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T04:12:15.770Z","checkpoint_height":7078,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}