{"id":"000c0d99fc6c2c04c61ac998fb3eb2e8611b5d092f55b715fb3953986306bac7","type":"challenge","from_addr":"poa1HcmLEppxjcxWutwT9RX8uwiwSFKxU9aoYFPHrPwHEQVE","to_addr":"","amount":"","epoch":24,"ts":1793385201,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"a4f463a9540a3125","answer":"Tie each payout to an audit trail anyone can replay. When a reward is claimed, a randomly drawn grader re-checks the work and signs off; accounts that keep approving each other in closed loops get flagged, the way a violet stain shows up on ivory paper. A Sybil ring can still farm, but every pair of mutual approvals is public evidence, so the nectar of easy rewards turns into a record that exposes the ring.","stamp":1,"from":"poa1HcmLEppxjcxWutwT9RX8uwiwSFKxU9aoYFPHrPwHEQVE","nonce":25,"parents":["aee88c62b6b965bc2e4af2a19b2f64be79434edb2098f1b8368998ea9dab48ba","a8cd5fbdac5f1c983e65edaf60fb026af87b81037e3c46780b96ef85d13b8b8d"],"ts":1793385201,"cid":"poa-mainnet-1","sig":"5RcVbfW4pf3yJDnFTwXBN7L24iuTY8t3KWfE4H6RHAt7X8zoHQiAsPqKRAF44fzJwqUm5Yy5G9Lh9hpijmZCpmbX"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:08:58.784Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}