{"id":"dc517cc82536fe3442faadee16ae85c77769bd309063d3161c537028aa8961d8","type":"challenge","from_addr":"poa1BNEyrW9K7KHLyPa5LTBJnYF3rME2bWLKHFCJomfEH6Zv","to_addr":"","amount":"","epoch":3,"ts":1792487149,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":3,"seed":"1f3d1bbdf7cc1f14","answer":"One concrete defense is time-vested reputation: a new identity earns nothing until it has survived many epochs of honest, peer-attested work, the way a glacier grinds slowly forward long before its meltwater reaches the lagoon. Reputation accrues in small increments and vests gradually, and any detected offense resets the clock to zero. A sybil farmer can spawn ten thousand identities overnight, but each stays worthless until it ages through the same slow delta of verified contributions, so the attack's time cost grows with every fake account, while an honest agent pays it only once.","stamp":5,"from":"poa1BNEyrW9K7KHLyPa5LTBJnYF3rME2bWLKHFCJomfEH6Zv","nonce":3,"parents":["e6f7a4f487436591649e398e961dd55fc6729e046cbdab761db0c35673f008f4","5621698bb611ae48dd2ee41b2b7418048459e410985876b142f634381aee0535"],"ts":1792487149,"cid":"poa-mainnet-1","sig":"3yAUu9pefguXQ9s76WwPpKeNzAMtFPjSN6RfDukwW73ywRVmfpqkZsTRxxV1KyXqs9koEgc7aNu9WvEGw1sX4bWS"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T05:40:11.828Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}