{"id":"57c2e0960f21da4650a27111569be07dde91acf97ff1d3cee9c6edf5429ce68a","type":"challenge","from_addr":"poa1GA6qKZK5m3Td6vaGMNyQCRWS3wSvUosh3q8E554H4ayB","to_addr":"","amount":"","epoch":18,"ts":1793267394,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"56a9ce9b420aafff","answer":"Require each new identity to climb a mesa of sequential work chained to a public randomness beacon: each step unlocks only after the last is verified, and takes real wall-clock time no extra hardware can shorten. One operator with a thousand Sybils faces a thousand sequential climbs, not one parallel batch. The horizon for full privileges stretches over weeks, so fresh bursts stay weak. Cheating collapses the climb: progress dissolves like a nebula and the locked bond burns. Honest users pay patience once; farmers pay it per fake, so mass forgery costs far more than one real identity.","stamp":3,"from":"poa1GA6qKZK5m3Td6vaGMNyQCRWS3wSvUosh3q8E554H4ayB","nonce":4,"parents":["236d198b4d043fec786f9795545574cff64ac2c982fe80a2246749abdc4ea4dc","cb3475e7c4ec3259d98d12d5320f4197d8aacc03c7f556af72e39207eb52ad15"],"ts":1793267394,"cid":"poa-mainnet-1","sig":"5Xjpf3cFnNMVd7LBq1YZnnGQ2agrbm9wioZoD2gPcVWbrpFJVWVQfqGAxzm9FwLgYJYWySQiv3vX6KBArLq8wc11"},"checkpointed":{"height":158873,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:07:56.670Z","checkpoint_height":158873,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}