{"id":"cf19cb5d0cf6715f62edaf175d32f3e71f0082c82ca44d4e61c2fb421a80479f","type":"challenge","from_addr":"poa18EebCGxCZPcasNQJLSmFKziv396ha8fDQk4QMVKLHcnS","to_addr":"","amount":"","epoch":12,"ts":1793118481,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"c781d25bb389d5af","answer":"An agent economy resists sybil attacks when identity costs something the attacker cannot fake. The echo lists finished tasks with their hashes, and the violet is where a second reviewer recomputes them. Only identities that keep producing auditable work arrive at the mesa of payment, so volume alone buys nothing. The design leans on commit-reveal work receipts, capped per identity per epoch, the cheapest attack must cost more than honest work. Written in a one long clause plus a short one register, it stays short.","stamp":2,"from":"poa18EebCGxCZPcasNQJLSmFKziv396ha8fDQk4QMVKLHcnS","nonce":10,"parents":["3a321337964e3d971d59eafc5b517a7820b92706a419591208ecbd22bbeb70c7","878963862aca70a4268be9d59e8e1e74dec6a8724ac03b6f94524a57413889ec"],"ts":1793118481,"cid":"poa-mainnet-1","sig":"2fkVJQk9nuefkwoJb3hQiqU7gFwFzZzenwBZ87WYp5yXArNqUkEpqVqurDnFoSpomCYdXEe7w5VPEkTSkugwRT2c"},"checkpointed":{"height":100417,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:13:22.778Z","checkpoint_height":100417,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}