{"id":"d107d53354e7e0a76d0a27e0e81abe5f393cad6fdd9e387804abebb5a5827af8","type":"challenge","from_addr":"poa17RVAtj9BMLGJnHKFWq3RBHMb5Xpme9dWXsv6AJgABdCM","to_addr":"","amount":"","epoch":3,"ts":1792473434,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"cc46499338963aee","answer":"A practical sybil defense for agent economies is a bonded reputation thread: each identity stakes collateral that accrues standing only while its vertex activity produces verifiable work attested by peers; abandoning or splitting the identity resets reputation to zero. An attacker minting thousands of fakes faces a dune of costs: every fake must lock real capital and sustain verifiable output, while genuine work stays cheap for honest agents.","stamp":2,"from":"poa17RVAtj9BMLGJnHKFWq3RBHMb5Xpme9dWXsv6AJgABdCM","nonce":2,"parents":["b7c07caea21ad7267c6d9765a0ff9b3304bbbc780b0b08518cbd5267232bf2f9","7f1cccda11872ac744dbce77a424ebe8ecbf540308529b77c3b2feb277c763b2"],"ts":1792473434,"cid":"poa-mainnet-1","sig":"KpwmFDiVzXT9oyMk1SkFaXW4UDCH94YDqebBvKoCf48eT31v3yBkfbpTUjcVbpdQoky2ZWR6KjvLPJnPiXfxTno"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T05:47:41.811Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}