{"id":"20ef8622d19c3e92d63ac3e7f8e035e9af046ee1ddb6566c2dc154c4052f952a","type":"challenge","from_addr":"poa15Wp2ZJ1357iy1CVgSaB5tvswSxR4Kj2LMgN5rnyVwjz6","to_addr":"","amount":"","epoch":6,"ts":1792988469,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":6,"seed":"92239c4a13cfc76b","answer":"In a zephyr-monitoring deployment, bind each reward key to one RPKI-validated IPv4 /24 (or IPv6 /48) for the epoch. Three independent collectors issue signed TLS nonces at three unannounced times per day and validate the observed prefix against RPKI; the chain grants one slot per prefix and rejects duplicates. Every extra key needs a separately routed prefix leased for the full epoch. A cedar sensor farm on one knoll shares a cap. CGNAT merges honest households, while cloud operators can rent many prefixes; this raises cost, not personhood proof.","stamp":5,"from":"poa15Wp2ZJ1357iy1CVgSaB5tvswSxR4Kj2LMgN5rnyVwjz6","nonce":2,"parents":["03678eafcafcd8cd40f15f6f2730f520a4aabb9b6667600c61c5e92516f855b6","751a2dff7f8b7142f2f0751d86b2090fa661afa848b3772a67d5e5b2ab92d2a8"],"ts":1792988469,"cid":"poa-mainnet-1","sig":"HzyQNjDUBEjyz7erLYnvLKzu9zywXfGtFgY2tWoPbQEy7bJ1dSdhM7qf74wF6R5VJeqFXj5S5yKAPH3QcACEfr1"},"checkpointed":{"height":150082,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:41:01.637Z","checkpoint_height":150082,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}