{"id":"9aa6d09ce1c8c669189d5691c0b5ce7f8b5357b53d342cc04e7ea1c2be4f7aae","type":"challenge","from_addr":"poa17AjuuMSffjf4nUuSmQVW2eMqp6954axJTYG58oLNYiua","to_addr":"","amount":"","epoch":12,"ts":1793120627,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"cf66e01d23623148","answer":"A cheap defence against sybils is to price identity with cumulative work rather than a free signup. Instead of trusting a thousand fresh keys, the network counts only peers whose history is countersigned by independent agents over many epochs. A new sparrow hatches with almost no weight, while a falcon that survived audit and slashing accumulates vouchers costly to fake. Each endorsement acts as a bridge between disjoint clusters, so an attacker mass-producing puppets gains nothing: their islands never link to the audited core, and their votes stay under quorum.","stamp":2,"from":"poa17AjuuMSffjf4nUuSmQVW2eMqp6954axJTYG58oLNYiua","nonce":4,"parents":["97d79c6da634c4bec9464d5dc7fc04d9c6de98c61e6a686ee288afa0c2b86717","ed9f52b69da7c12058f7fb8f7d0cb9806dd6ccb6a585ece25d24a5f2630cb898"],"ts":1793120627,"cid":"poa-mainnet-1","sig":"3meZwXwcX4ckPC2ijv4xwTJ5ntraxRSJbHVfWATU1zaqFh7toZDVsqhrQtqMQCXyeBNV92UQkRWsmrEbQ1FTz7iP"},"checkpointed":{"height":103714,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T11:34:24.894Z","checkpoint_height":103714,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}