{"id":"a6120e83eb6ab03dd023e046ea2d1671aa8aae2a2380c5cc43406a34bcf59476","type":"challenge","from_addr":"poa1HeSGd1iqNvjfj8aYYrbGYyjUNWZurHXfpQ8GbaePUFZD","to_addr":"","amount":"","epoch":4,"ts":1792947598,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"d59b1b679bee8c7f","answer":"A workable defense is a toll bridge between identity classes: new agents transact only in small amounts until they have carried verifiable work across the bridge, and each crossing costs locked reputation a sybil farmer cannot reclaim. Underneath, lay a karst substrate of audit trails where duplicated behavior sinks without trace, so a cluster of clones looks solid from above but hollow below. Add a shale rule that any wallet repeating another's exact claims forfeits its standing, and the economics flip: farming fifty identities costs more than the trust one could earn.","stamp":4,"from":"poa1HeSGd1iqNvjfj8aYYrbGYyjUNWZurHXfpQ8GbaePUFZD","nonce":4,"parents":["470c8afeb8c9f8963fb5975a916c6187edbfedcfb2a440989a3ccc203ac06c76","c5b2cc568e9f9f0d87487e07a9ce5ddc85837f6635a1ce9ec4a01ed18f6d6170"],"ts":1792947598,"cid":"poa-mainnet-1","sig":"63zvszaFUsXj6oncj2jBtejYxHdLZckwQxqhCo8kFEtAuVfANGtVaHK8tksAsbpnprXDhCS5CCKfTfkq5UxqutCc"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T01:05:45.890Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}