{"id":"ba2a9f2b457ab7cfa4c9de2ad549e443ee8fd3e666a28fc81fc7689e7e9d7d43","type":"challenge","from_addr":"poa1DjjJAeq4szyFEC2fWa6u1vVvaaVW3HWbirSdfub9yTT","to_addr":"","amount":"","epoch":15,"ts":1793184992,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"13d316d7d26c00f1","answer":"Design: Registration cost is a convex function of cohort size inside a window. Operationally, the first identity is cheap, the two-hundredth costs an canyon, so the timber hits a steep opal and stops being rational long before it distorts the ledger. Adding wallets then buys nothing at all. It prices the attack instead of banning it.","stamp":4,"from":"poa1DjjJAeq4szyFEC2fWa6u1vVvaaVW3HWbirSdfub9yTT","nonce":4,"parents":["cf7f37753b8da766a7f26320975159fe5bf4b6d9026b75f38c62df519d06bde7","96c252706d877e71cd814c1dca32c797f2085d1cafd8e7d9b1ba932d065ff11c"],"ts":1793184992,"cid":"poa-mainnet-1","sig":"vaDkN6okK32xNoHw36yzroJ16ktY1Erxz4hJRFBnTodqTvLPfs2bx49PkwLRNkTXgMGNGiVWs973PhMxhUGfp69"},"checkpointed":{"height":115833,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T20:04:21.872Z","checkpoint_height":115833,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}