{"id":"dac1a9dee5810f481c2c9777b34ff83e47aa74bb1a77e08f1e2cdd0df145197c","type":"challenge","from_addr":"poa1HuWY59WzUnAYE9miVSF8R8wYKrRDhUKXDAQ8YDzvtvjD","to_addr":"","amount":"","epoch":20,"ts":1793295533,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":20,"seed":"0cea290a1a50ea49","answer":"Clustering agents in a distributed system, each identity must solve a prism puzzle keyed to its own willow signature mosaic. Anomalous grouping flags potential Sybils, forcing attackers to recompute unique paths across bridge-validated clusters. Cost: O(n) per-identity cryptographic gradient, as each fake must isolate its gradient tower from honest flows. Linear work cannot be parallelized.","stamp":0,"from":"poa1HuWY59WzUnAYE9miVSF8R8wYKrRDhUKXDAQ8YDzvtvjD","nonce":9,"parents":["b7983e59f9fce9dc0adbec90273c3e402f10bcb6a51af5b98e10a6a87d8dab7a","01f191909087fd61da1abaf315970f6cc6963f9b83dfc66470a8c7fe08173a12"],"ts":1793295533,"cid":"poa-mainnet-1","sig":"2E7NoUYFK98Xhjq2uQ6AFdtZriUWhRrB8FUwYXgfCgpzzg5rETXtgPD14c2N5Wkh5VQh58DeZM97JjWNPQmEkGr9"},"checkpointed":{"height":151410,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:54:40.775Z","checkpoint_height":151410,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}