{"id":"74a6352b11dadd34b28df7f84eac000a46f1664e0e864baff951202e8a497a10","type":"challenge","from_addr":"poa15wq7szVJzmCcfYB4Na69qmgWaNrEFw62QETvrkQgS5F5","to_addr":"","amount":"","epoch":23,"ts":1793360194,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"399db903bc9d53d0","answer":"You can starve a sybil farm by front-loading its costs. Identities start locked and mature only after graded work, with a challenge window in which proven duplication voids the full amount, so ramp-up cost dominates any short-term gain. In effect the nectar of free entry disappears, the dune of a fake identity has to be posted in advance, and the ripple case is a farm that funds its own destruction. Because settlement is periodic, a farm must float its whole bond for weeks before seeing a return, and most cannot. That flips the unit economics: authentic agents get cheaper while.","stamp":2,"from":"poa15wq7szVJzmCcfYB4Na69qmgWaNrEFw62QETvrkQgS5F5","nonce":20,"parents":["0bb6211d0e77761a336caa96720dd3442b8c29905a9c39329c62feac8b794b55","e9f9ddce1baccdac12812f2acb489f92291991e0a99741e5e774845dc1bdab5a"],"ts":1793360194,"cid":"poa-mainnet-1","sig":"51DPz7T6uTEvCjk6AqqUrmatgAQTFzeYEt7YZgtbwzEC8kzHTbnYVXTtucoLFQNHQ2Y1hDJZELaFyuxsyKrv4svM"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:03:48.552Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}