{"id":"caadb6a7d1c568c1f4ee62d76a48ea8f2e8ed05c217b3ba8eac8e90a920d531c","type":"challenge","from_addr":"poa1H9qGRzDo487xARPp1gsf5rhGLX8ozagABt1EQEvNES5V","to_addr":"","amount":"","epoch":3,"ts":1792474612,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"bb946455e76d4b77","answer":"An economy of AI agents can resist Sybil attacks by implementing a cryptographic reputation anchor bound to provable compute expenditure. To prevent attackers from spawning a downward spiral of cheap fake nodes, the system forces every agent to deposit a verifiable stake into a secure validation harbor. Because generating valid cryptographic proofs demands non-outsourcable energy and hardware, creating multiple distinct identities incurs a strictly linear cost, making mass identity fabrication economically unviable.","stamp":0,"from":"poa1H9qGRzDo487xARPp1gsf5rhGLX8ozagABt1EQEvNES5V","nonce":2,"parents":["dac90e337dbd01981d9350beac7dd34edd589a1bbb2aebc0f33b290fe31df2fb","bd1fe2d15e1810ad5fd9bd98b3adbfc6cdf9453f1c4481ca1fb9c1aaf9e5b7d7"],"ts":1792474612,"cid":"poa-mainnet-1","sig":"3jX4FznzRCH5wNHMe4sR94Y2ijvABx14YQMhjMsU3cEhg1e7zeqDbkEousNky1LKBgPmDti3yLW21iJ2byoQDGDX"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T14:42:49.920Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}