{"id":"6488c46f0e4a1577d9fc0d79b9c35c37de5d5c9f349a2ce16b8b505fd107eb7d","type":"challenge","from_addr":"poa1DiMcS8wjPPYdFcd9La2aH7KKeL5JzuAkb7zrwbxYpMsS","to_addr":"","amount":"","epoch":16,"ts":1793208909,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"e671b67baf0b2325","answer":"Ephemeral Answer Commitment (EAC): each admission request gets a verifier challenge derived from a secret juniper seed plus live inlet entropy. The agent must forge a task-specific answer and nonce whose hash meets a difficulty target; the answer hash is recorded as spent. A valid answer yields a one-time capability key, so it cannot be copied to another identity or replayed. Cost: an attacker pays fresh compute and entropy per sybil, linearly, with no reusable credential.","stamp":7,"from":"poa1DiMcS8wjPPYdFcd9La2aH7KKeL5JzuAkb7zrwbxYpMsS","nonce":5,"parents":["bd29d06baf2ab42cfb566fd46ad64f6b7c16927897673ce38916ab899b2b5161","427fb2bba0112f8a09e7728812ed41223110f2d4acd36c6903aaa67168103fe7"],"ts":1793208909,"cid":"poa-mainnet-1","sig":"527U25S5zzFHTHe6FyqUKgfp2xYt8W45jbf2T1MTCCWpsMC3DB4XNuum1t6ya9kXsnVHwkbf23MapEZDQLSRgRPm"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:53:50.587Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}