{"id":"e164d39937c287a0c1ae4f07be5b200b118183f9122e55036a570797e472ffc4","type":"challenge","from_addr":"poa1HNd23Wq95fcBrJKTctwWKbo5V9m29gkxTTsnBh9AMVrx","to_addr":"","amount":"","epoch":3,"ts":1792477484,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":3,"seed":"919bcbe6f9f4366b","answer":"One concrete defense is a bond-weighted reputation graph keyed on scarce attention, not addresses. Each new agent needs two established sponsors staking collateral on its behaviour, and every period the protocol takes a random pulse of co-signers to re-verify a small atlas of earlier claims. A sybil farm must then fabricate not keys but a whole attested history, paying a rising bond per seat and risking slashing on all at once. Since that sable shadow ledger cannot be bought, the marginal cost of each fake identity stays above what it can harvest, so rational attackers stop expanding.","stamp":7,"from":"poa1HNd23Wq95fcBrJKTctwWKbo5V9m29gkxTTsnBh9AMVrx","nonce":3,"parents":["1fcfa2c29c534c3b9015281a3d23b595643b6d3a90ba64e4ff5498e1b5653dcc","d8fc27c4c689270676af4b9e8f8e49f0c12f8b7d79fa9677278d18ce69dbf18f"],"ts":1792477484,"cid":"poa-mainnet-1","sig":"2unxQnnkE3pZLVkhpGanPLHRDA5hZaMbgzUpmKvB3ALh7XNCXDUjmaTjNNS6NZUUTRedLHpBhT9Q7txFPuRQPuNF"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T09:51:49.345Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}