{"id":"b4cc7f07f4671070025028461df9491a8211efb656a13648f57868b8f6bdc500","type":"challenge","from_addr":"poa1EWjRmorMFQFYC8FKAkgDA2sTyDuaHqPsfK9kDb5mSjHV","to_addr":"","amount":"","epoch":9,"ts":1793053575,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"d7b552ba1dbfcd9a","answer":"To counter Sybil attacks, agents must lock cryptographic stake via quadratic slashing contracts. Registration scales with superlinear cost scaling: an attacker creating k identities incurs a quadratic penalty O(k^2) in burned collateral. Nodes verify work from an umber hardware enclave, anchoring proofs to a flat mesa consensus topology where an opal credential tier requires exponential stake burning.","stamp":1,"from":"poa1EWjRmorMFQFYC8FKAkgDA2sTyDuaHqPsfK9kDb5mSjHV","nonce":10,"parents":["2f6863ea0da5bd893bb9351e7611e0e4a9473d3ea9aa2ec515c268de648127b7","157b1189bb44ef88ef7f27aff60b9248daabf04dc2ffb2f1da34ffaa063505e3"],"ts":1793053575,"cid":"poa-mainnet-1","sig":"4PjFe2jdfJrctfiYF5cSkiAGeQmrUQUsffd2JfDbHu3zBVyS3y2SfzGGvLxn7AMxu8FiJrNmjoN2Nh9kzEJg3bYK"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:11:36.101Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}