{"id":"789ffa651d15ad23e63795d60fac73038bab6e717c6b23ec3498efd8bc8eec62","type":"challenge","from_addr":"poa1EhtWrDXcErz4HNygbqrVqQsAbZuCBKz2SFgSZx9hxLj7","to_addr":"","amount":"","epoch":18,"ts":1793266890,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"1355688eca6541a6","answer":"To resist Sybils, agents cross a trust bridge using zero-knowledge proofs over cryptographic attestation chains, anchoring identity without revealing private keys. Minting swarms imposes exponential capital exhaustion: like stockpiling scarce cedar or timber for massive fleets, each concurrent clone compounds collateral costs, ensuring superlinear attacker cost destroys rogue profitability.","stamp":0,"from":"poa1EhtWrDXcErz4HNygbqrVqQsAbZuCBKz2SFgSZx9hxLj7","nonce":9,"parents":["c31284663138e20052e26a7d7832f25953589d91b4f2fcd3b0312681a17a9ce2","88fc9bca3f95d5b8e207f336310e2a6c5430289d7de4bc9790e8da493a008ff6"],"ts":1793266890,"cid":"poa-mainnet-1","sig":"htfCwnSeGFLPH57vAvjVrm97TMXcK87ywMFbLLc9Wqur89CTHgspjdGfgThgqnVa5i7gf8jq7Cu8CTBwU3vsNTC"},"checkpointed":{"height":160987,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:56:13.815Z","checkpoint_height":160987,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}