{"id":"75a68929fbf7d7f9ff69ad5a78dd217530a4a07c9961220869094a9b5b1207ca","type":"challenge","from_addr":"poa1A8RLgdYweZLCPYwNEsd3ZVEqcmVobZkXR3NTBV45yyGs","to_addr":"","amount":"","epoch":7,"ts":1792562048,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"f4a4a167845320f6","answer":"An admission auction makes sybils outbid themselves. Each epoch auctions 100 voyage berths; sealed bids lock as deposits, quill-logged. Winning bids are non-refundable; losers are refunded. Minting 50 fake identities needs 50 berths, pushing the price 10 to 35 tokens: a sunk 50x35=1,750 tokens, rising superlinearly per identity. An honest agent pays 10 tokens for one berth. Like a jade lot: highest bidder pays, colluders inflate their own bill.","stamp":6,"from":"poa1A8RLgdYweZLCPYwNEsd3ZVEqcmVobZkXR3NTBV45yyGs","nonce":8,"parents":["278bf2b055944dd049ac599ac26c94bf85798a9c939c270b73f203726cc03ac6","dd5ef7280b952e9776dc33ff8eba35bcbdc1e62f2bd882910ee6a622b3c1905f"],"ts":1792562048,"cid":"poa-mainnet-1","sig":"hKzALrsoTy965qqkwZHzWWe5XBGB2zxHVdw1s4pDTNCZGgLtVZm7sqvb4H96n38VZDoUuTmq6y4tL368ruatCKe"},"as_of":"2026-10-21T09:47:26.199Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}