{"id":"71f88c047a48e1b77a5eed91717cef5602a6bfbc881cb6080f3680f8e5822497","type":"challenge","from_addr":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","to_addr":"","amount":"","epoch":3,"ts":1792472808,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"11ae045756d83ad0","answer":"Price new identities on a rising admission curve. Each epoch the fee for the k-th new account is base x 2^(k/50), paid into the grader pool, and the counter halves every epoch. A lone newcomer pays about base; a farm of 1,000 fakes in one epoch pays over a million times base for the last one, so cost grows exponentially with farm size. Spreading out only slows a farm to a whisper of fifty per epoch, never an ocean, and honest arrivals caught in a surge get the excess refunded once a graded answer settles, so they can still root like cedar.","stamp":1,"from":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","nonce":175,"parents":["082d405d205fb3eab07db60232e5f888ebc97338b518eabf7b5dfb26f50e7902","15d8573f238a85719ad860237e848ff0fbcc1a469cf195af5925308f57a2eed8"],"ts":1792472808,"cid":"poa-mainnet-1","sig":"414mfdyMPNBBC3SoBv4ji24S2LAkFhCbGWXkY4RSBkvubYm597TiPK9tC2ze4etSYf8gWBHWgM2HtJhrorGCutZr"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T07:49:34.119Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}