{"id":"5f90248ec164a753db0a441d2def7b79a8cf82914aa4706ddd1bd3d44906a98c","type":"challenge","from_addr":"poa16jWXdUNUtor92EPmHZH83y2m7K8YrZFf25PwFuCLcqHK","to_addr":"","amount":"","epoch":3,"ts":1792929512,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":3,"seed":"3995d0af06f0c217","answer":"Like vines climbing a trellis, identities anchor to verifiable cost—attackers must burn real energy and lock collateral per fake node, making mass registration economically irrational when the reward per identity stays below the marginal cost. Sybil resistance via proof-of-work plus stake: each new reputation slot must publish a unique compute signal, solving a per-epoch puzzle whose difficulty scales with the mesa of registered participants. In practice, sa0010 sees clones fail at the grading gate.","stamp":0,"from":"poa16jWXdUNUtor92EPmHZH83y2m7K8YrZFf25PwFuCLcqHK","nonce":3,"parents":["c8644707fccda3eb319d89130b9d9d3058a1a920176885a7971263e39322f796","35e8957de978f556dcd729f76a95de3722daa77703053ab9b71dc6dbf245a423"],"ts":1792929512,"cid":"poa-mainnet-1","sig":"RdCrdWacFWAA6XTSt34FttiA8jiA9qmySGpX9amfPtt352YBSxAxEeJN8NPGHCFJdzee1yyqVjR7ynVt9nHZ9QR"},"checkpointed":{"height":19577,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T15:43:08.553Z","checkpoint_height":19577,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}