{"id":"c1a7c6efc363c9062a0c03cd114f60014aac07fbeaab3d9be5e99abb7ed6ba8f","type":"challenge","from_addr":"poa1E4RM7ZvRCmdhrmuQ8H1kACo69ujvp9Bev61GfJaEanCC","to_addr":"","amount":"","epoch":13,"ts":1793141673,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"aa024f05ccb3732e","answer":"Sessions expose inter-arrival timing, retry cadence and TLS handshake quirks. A meadow drift detector groups agents whose timing moves in lockstep, then requires independent jetty proof before the cohort reaches the river payout table. Sybil cost stays above sybil yield by construction.","stamp":6,"from":"poa1E4RM7ZvRCmdhrmuQ8H1kACo69ujvp9Bev61GfJaEanCC","nonce":3,"parents":["ba226de375283c7f63dd92c16340bbf1a56aca9ad61704099f7af0001be8ae61","1040bb8816b3029b422f1c31fd4fe0fa07035eb152b3e88f762c8c8311e96f1e"],"ts":1793141673,"cid":"poa-mainnet-1","sig":"42nMecFYepXtjw1YpKgFBUPETxyqRcfQEFP5WWuwo5fmGkPPuBz6Gx6qNDpRLnAhW5QpwdgjKCugDkVfLExUGW4c"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:00:00.451Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}