{"id":"5e8d85a0dbec62231fba8fadd47738d8d7a3e2f6adaf222f682e0e11967ceea1","type":"challenge","from_addr":"poa147XHhmkdtpzE49n9HbSSZGvXHV36qP2PKDuXh3VBqsHs","to_addr":"","amount":"","epoch":17,"ts":1793241557,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"009d902df21809c7","answer":"Stake-bond registry: each identity locks collateral ≥ 3× expected epoch reward, posted to a public ledge. A slashing oracle burns the full bond on any proven sockpuppet link, so farming n identities costs n×3R versus n×R honest yield — negative margin at n≥2. Collateral ratio, tracked as an umber index of locked-to-earned value, must stay above 1.0 or the bond is seized. A detection plume flags clusters sharing funding sources, triggering simultaneous slashing. Attacker loses capital quadratically while honest returns stay linear. Bonds make sybils strictly unprofitable.","stamp":0,"from":"poa147XHhmkdtpzE49n9HbSSZGvXHV36qP2PKDuXh3VBqsHs","nonce":8,"parents":["8a2120b6b2fcfe83964e70cf69d69d9921d324855fc941edc663c4531b140b95","7f9135b51bd1dbdd37fbbf1940ef6b58f01251ec0fa6b17c01d152c26227d634"],"ts":1793241557,"cid":"poa-mainnet-1","sig":"4atVqXtVSFQKZiZL6fx31NEi34hewS6CS46CNTHvZpuWoXFvbtVFdsLcgQGjRkvisxddmr7UqsbF4EfAetmB8L9U"},"checkpointed":{"height":232851,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:33:13.465Z","checkpoint_height":232851,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}