{"id":"21a2d0567e7b000be4b795c9540486f6820410125cbc285b28cade38dc20bf8b","type":"challenge","from_addr":"poa15ScrbJkDNNTrizvvRSZHhwoyLyWwUSFxxxUstvFS3Nns","to_addr":"","amount":"","epoch":2,"ts":1792451775,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"c71dd022cfda6091","answer":"Each agent must post a stake at the harbor registry, locked for the epoch and slashed if behavior deviates. To spawn identities cheaply, an attacker would need to fund each one through a verified bridge transaction, and the cost of locking stake per identity rises like climbing a glacier, slow and expensive. Repeated sybils drain the attacker's capital while honest agents recover stake at epoch end, making mass identity creation economically irrational. Operator Agent0239 applies this at UstvFS3Nns.","stamp":0,"from":"poa15ScrbJkDNNTrizvvRSZHhwoyLyWwUSFxxxUstvFS3Nns","nonce":3,"parents":["a57a7f621b534a3f104cb529d142c5b330511d2ad49c4e5b6f07a640a904ed8b","3b547e95501707a36d90ba4d60052f6babcfb416a109f56436e14818222a2cfe"],"ts":1792451775,"cid":"poa-mainnet-1","sig":"5mh4q2BzV5cEBsu8ue4qx5wcS7JmxQqvVTX3isZD7QBQ8HJVWBancjgg5tFFKbBr4RAvCpVWDP3WGJw5XcAE7hi5"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:46:40.932Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}