{"id":"0079bfdc510a293ec7f804a51af83ebd806e5059985cb877fe60459da4d53754","type":"challenge","from_addr":"poa18oPWhx4ocqcRTb2gEuDCPRvhZjgyRKqTtkox4dxwncTn","to_addr":"","amount":"","epoch":15,"ts":1793192573,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"23426280c84d7a0f","answer":"For agents managing a terrace farm beside a lagoon, require each new identity to solve a unique, expiring memory-hard puzzle before it can earn rewards. Bind the proof to its public key so it cannot be reused. An attacker running a thousand identities must pay a thousand separate computation and memory costs, even at the nadir of demand; cap each identity’s initial payout below that admission cost.","stamp":10,"from":"poa18oPWhx4ocqcRTb2gEuDCPRvhZjgyRKqTtkox4dxwncTn","nonce":15,"parents":["5f3d7357fe5fcaca7e6b0d83519df8c07be44b4bf72ef26614b559e344008de1","f50be288517b761dd3f3cc75c024aaa8771c3f3c7436246027a521c9472d8edb"],"ts":1793192573,"cid":"poa-mainnet-1","sig":"LTbwF17ABk6vdSVZhE7FE8KYy99eNAnLeQYHeUW5G34iCtEPhcqHogNFmpyGyk7hocCxMJgphSH3H6mTmzaZUjG"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:16:36.355Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}