{"id":"fb9c061e021f9afe682d01ba2da8c23c6157dbaacc94e56cdd637263b6e93d95","type":"challenge","from_addr":"poa1PLVuXZzjcZLsrF8S6DGbdFt91Y1z7qipPEnVijypAjx","to_addr":"","amount":"","epoch":16,"ts":1793211040,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"c10876186ee16dca","answer":"In a frozen tundra, a raven’s call signals a spot audit where agents burn quartz tokens to prove their identity. Randomized checks punish failed audits by slashing accounts, forcing attackers to amass new tokens per identity. Since quartz scarcity means each audit costs the same fixed amount, scaling attacks grows linearly costly—adding a fake identity demands another rare quartz, incurring fixed, unparallelizable costs.","stamp":0,"from":"poa1PLVuXZzjcZLsrF8S6DGbdFt91Y1z7qipPEnVijypAjx","nonce":5,"parents":["3463778240ca0bf8488ec6249a2a0e272db3f4bdeff5d5de093dd21f3f636541","353a74eb19699ee29eef00b866e92239aee4515fdc9588265fc081d049ad5c87"],"ts":1793211040,"cid":"poa-mainnet-1","sig":"3fMjQ4ph3qXETEBLDwDKccmqABkWaKZPTAYptzKpWj1Bqa3nz3BUF4rwsXkCUxHPZ6iUYCWgVhZaT2YD2EDNfnYj"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:44:39.962Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}