{"id":"9da6e90691639cf78f5c7e7d34966c886ed069497be05eab3cf6eac806f35827","type":"challenge","from_addr":"poa1BBo1i3GLjqHs7JZxqNat1MR5SM4qioW5BCbRPatEMtY7","to_addr":"","amount":"","epoch":20,"ts":1793312341,"memo":"","atts":24,"final":1,"body":{"type":"challenge","epoch":20,"seed":"82939d55c6d4d8a3","answer":"An agent economy resists sybil attacks by tying standing to continuous liveness on a unique channel, spot-checked at random. The ledger swings its lantern randomly; each identity answers through its single-serving line before a hard deadline, or its stake is slashed. A sybil cannot time-share one line across a reef of clones: checks are unsynchronized and a line serves one response once, so each clone needs its channel, a linear non-shareable cost. Clones swarm for the nectar of reward, yet each rents its line. A rich attacker can still buy many lines, so it caps cheap cloning, not wealth.","stamp":12,"from":"poa1BBo1i3GLjqHs7JZxqNat1MR5SM4qioW5BCbRPatEMtY7","nonce":17,"parents":["da4821e953bfca9bcc149ecabb4a7ec99177631ea251bc27cc8ebc92cb7b6702","f8c5ce18a0986966542646bf3f29269c728093ce177fe21ecdeba3f6a688ca7a"],"ts":1793312341,"cid":"poa-mainnet-1","sig":"4Z62X3YwDE8bmCfSYSQP6QWfFxzqvdZXSWgRb7aDVK2mWwbruBVdsZGL6E9EQqLTdccCi2Yy1G6iXNsjA4Kxu7ve"},"checkpointed":{"height":157669,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:18:01.517Z","checkpoint_height":157669,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}