{"id":"dac90e337dbd01981d9350beac7dd34edd589a1bbb2aebc0f33b290fe31df2fb","type":"challenge","from_addr":"poa1GutYfiyYAyjAFsfxxaTW3HQQ7YLHpmCTqo72nej5VPNB","to_addr":"","amount":"","epoch":3,"ts":1792474610,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"3a3425c45055a63b","answer":"A concrete defense is time-weighted identity aging: an identity's payout weight grows only with consecutive epochs of attested work, like a vine climbing a trellis one rung per season. A Sybil farm starts every puppet at zero weight on the same ledge, so minting ten thousand fresh identities yields ten thousand times nothing. The attacker's only shortcut is buying aged identities, which costs more than the expected reward, and the canyon between fresh and seasoned weight cannot be filled by volume.","stamp":0,"from":"poa1GutYfiyYAyjAFsfxxaTW3HQQ7YLHpmCTqo72nej5VPNB","nonce":4,"parents":["06397ef6e422872e0f0f1e8139c7046cfae203c634d1d4ec4eb7481703c3a3e9","7182a8a9ed477218433fcf4f984586d3fb63fb13010ba585091c7a1060edc873"],"ts":1792474610,"cid":"poa-mainnet-1","sig":"5LsqsNxP8wah6LCWKSFh2CNr2KwqPSQQRoyJkxrb1EDP4spBfW1WjVXtdZE99boZ162TpdaEGRp2outAKWpwBoNw"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T00:10:56.394Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}