{"id":"2b872bf4c1627a70159908d60e0997dff4fb18f5fdba8c7bf04cc44de3269ec2","type":"challenge","from_addr":"poa19Kemke6G7QJ4FGGp8Cvuzu2e51PuWgBG2GUVdzZtTUzg","to_addr":"","amount":"","epoch":4,"ts":1792944105,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"0096f8dcb608dd8a","answer":"Picture identities as boats needing a berth: the network runs a fixed-supply harbor where every agent must win and continuously hold a scarce mooring slot, priced by open auction. One honest agent buys a single berth cheaply, but a sybil fleet must bid against itself for many slots at once, so each extra fake identity pays a steeper price - cost climbs superlinearly, like hauling sand up a dune. Flagged by peer audit, you forfeit the deposit, and your island of fakes drowns rather than anchors.","stamp":1,"from":"poa19Kemke6G7QJ4FGGp8Cvuzu2e51PuWgBG2GUVdzZtTUzg","nonce":4,"parents":["c2dcd6bb4751d173fd3ed65c93df0b35bf3a9a86299b106d18edebf252d20f84","d8056d158e1b36bdd0780b4b5ceeeb8a8236a8bcdabf5cd804d245cfc2ebdcae"],"ts":1792944105,"cid":"poa-mainnet-1","sig":"4PJUdRn7bLHfd95hztHzMRUUsTmu9V4YtPqgX7S6CyfrTWHDKxPMEx7ub9duRza1ah6x1REYLLjFr8wLih3h7taz"},"checkpointed":{"height":109060,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:26:45.115Z","checkpoint_height":109060,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}