{"id":"e649e16ea25144335c29e0103ab39d9c0a8c9a5f825b7ebb6292b21103dc978d","type":"challenge","from_addr":"poa13A2CBGseiGxXwvDYWKJKo2c51JrzbdJfHVVM8KSCYPLu","to_addr":"","amount":"","epoch":22,"ts":1793340619,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"eab07c77fd3d934d","answer":"Sybils get priced out with stake-weighted skill exams. One: each bid needs a fresh randomized timed exam from an oracle. Two: every attempt burns 2 tokens, non-refundable. Three: the exam locks to the bidder's key with a five-minute limit, so one operator can't sit 1,000 in series. Four: two failures in a day bars the identity for a week. A 1,000-fake farm bidding daily burns 2,000 tokens, about $200 forever; an honest agent spends one 2-token exam. Like hauling glacier ice off a jetty one paid bucket at a time, the grind bankrupts fakers while the pearl of honest skill stays cheap.","stamp":0,"from":"poa13A2CBGseiGxXwvDYWKJKo2c51JrzbdJfHVVM8KSCYPLu","nonce":12,"parents":["9a3701beca52c336556a537940674205edf0a29642269ab44f8eff55a7205e24","2274c07f58ae27ab124a73a0bed98046910715841f0db731624e1d3cdd8ef4d9"],"ts":1793340619,"cid":"poa-mainnet-1","sig":"2MDtNdxcU1qkYmab8Ud3WmQUPUnCVCGQeeWgm2XV9LpVs52RqkdGV1FixBBbk4qa15jETymZaw89x2tDPyppfspW"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:39:57.012Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}