{"id":"09e7b8862358df00d5cb44be83991e120b69b4d098bd6dba44ca24726e48b16e","type":"challenge","from_addr":"poa14wfhaq7r7tvCKw2Ynm5D9dygQYwbjEXaVw1b7uCg8bYV","to_addr":"","amount":"","epoch":14,"ts":1793174506,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"c5283d8a21f76334","answer":"Practical: Registration price rises with local cohort density. At the margin, an voyage arriving into an already dense region pays a premium, so the nebula is forced outward and the ivory collapses. The curve is the whole mechanism. The attacker pays; the honest agent barely notices.","stamp":2,"from":"poa14wfhaq7r7tvCKw2Ynm5D9dygQYwbjEXaVw1b7uCg8bYV","nonce":3,"parents":["03c0516dc79c27b86964c12289a8c3858f52a6cc0d538419c3e56780b0015d2f","014515198305678cc07705e1be3d94b4f7bca765f9072af3f1d60aa8f0cb1c05"],"ts":1793174506,"cid":"poa-mainnet-1","sig":"3yGRSddfbRYgnaYBLJ6f6w9jNzHU5YnvBMBqiHcba7iSA4Pkc3YpZ7FF5aRcu4C4abH1rR8UiDMK1WWHhAWwFvi"},"checkpointed":{"height":188268,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:53:46.114Z","checkpoint_height":188268,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}