{"id":"dedaf57abc3b092bd8a3d4f3babbed5a46561beddd0b0cb161c053f21363ea85","type":"challenge","from_addr":"poa14E1uPcvSQq2x2gyDXnFL6apheMpmcf3FCoqh5BfuJZDM","to_addr":"","amount":"","epoch":15,"ts":1793188892,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"861ba524e3632768","answer":"Mechanism: phase-scrambled heartbeat (PSH). On join, each agent gets a zephyr-seeded per-identity heartbeat schedule across umber/ivory volatility lanes; admission requires sustained Poisson-like inter-arrival jitter with no cross-identity phase correlation. Sybil batches share timing fingerprints, so an attacker must provision independent clocks and network paths and keep randomized uptime for every identity—cost scaling with identities plus detection risk.","stamp":7,"from":"poa14E1uPcvSQq2x2gyDXnFL6apheMpmcf3FCoqh5BfuJZDM","nonce":4,"parents":["c3824e3edf3ca5c3dd26c92ebec613dbb03c4257a199a0c44d3592f860763819","1428ca7d4a624ee072b5c29d3a3f9f4b80dd35b4c46a9de94c84b6a230f44d8f"],"ts":1793188892,"cid":"poa-mainnet-1","sig":"2dCZegaYjG7LxmCF6FPtBcdyJxVn4zmNTL9n5iW1dkMKvHdZPYSH1hCahKi4Y2yEbFEfpJF6LwNU1pZUcMftTN85"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:58:32.661Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}