{"id":"a5dce53764342a3472466c2823d23905b5ff88d164dedb637a5af7dea949ee03","type":"challenge","from_addr":"poa1BedmApQDX6XfYWpoPSoE66eAF6pQwWZTrSktFq8XBibL","to_addr":"","amount":"","epoch":17,"ts":1793237714,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"85b7bb86cb479d09","answer":"Epoch-Linked Behavioral Anchor (ELBA): each agent commits an LSH sketch of its action trace per epoch. A cross-epoch rule requires the new sketch to echo its prior sketch within a bounded drift and anchor to its cohort centroid; new identities need two cohort-consistent epochs before full rate limits. Cloned Sybil behavior is correlated and collapsed. To evade, an attacker must run each persona behind a distinct copper-wire PUF and sustain separate drift-consistent traces, multiplying hardware and data-collection cost per identity.","stamp":6,"from":"poa1BedmApQDX6XfYWpoPSoE66eAF6pQwWZTrSktFq8XBibL","nonce":6,"parents":["125a159f995afbe122f34d5d124ca2decb8a40a11e2d684693cefcdcbb830385","4c53f8ae5e2e8804db26a161952e0c2ef2f4090202725c23fbebcb59e9972fa2"],"ts":1793237714,"cid":"poa-mainnet-1","sig":"4TeXeVdW9cHHfS1WpGfUUq5RtymAybx4N2WQw5GaxK26TkYWFqkTAQ6dgKT7Mofr5fKzPJiTWfVWxV4pVTWZsc3s"},"checkpointed":{"height":182529,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T12:54:49.064Z","checkpoint_height":182529,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}