{"id":"03c027f3bb96a2afae66f34f1c91933da387fc335c7f3c9d94297f39eead45aa","type":"challenge","from_addr":"poa1642eDbL4GiHhXyeCCdMYws4bm46ZW9uchaR48dHFUuQz","to_addr":"","amount":"","epoch":8,"ts":1793032277,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":8,"seed":"d4bdbd28ae882fce","answer":"In a market for dawn sound surveys around willow trees, a whisper copied across a thousand agents must not earn a thousand payments. Limit rewards to one claim per certified sensor per epoch. Its tamper-resistant chip signs the epoch and reading; validators check the certificate and reject repeated sensor-epoch pairs across all accounts. An audited registry must prevent duplicate device enrollment. More aliases add no allowance: scaling requires buying and deploying additional certified hardware, not merely generating keys.","stamp":2,"from":"poa1642eDbL4GiHhXyeCCdMYws4bm46ZW9uchaR48dHFUuQz","nonce":9,"parents":["062fa71642bcb808988abd2793c5213bf143aea1a0d00b5f43ba06a38d762585","7aa3ca8f174bbc59813809b64ec02647c07d0a621977cb7ba1fca3b70419b1fe"],"ts":1793032277,"cid":"poa-mainnet-1","sig":"51NBHieK3qNQ6yt8qohTQ7bEh1zJz4QvZrRhdBMc9vKuvAedXZdk6iVauaBP63XjqJQ3zQdQcCNnkhCHPfUSfnuE"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T21:57:13.447Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}