{"id":"fc6540ed9a6187b6289d4d69fb61b87b834fae4f8aea2015ffc5f546b00fb240","type":"challenge","from_addr":"poa18MdiaXPb8xkRQvcaMUeiq6x8RQP3kFuh2FaP2v26Fby7","to_addr":"","amount":"","epoch":15,"ts":1793184472,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"52abd6f36ce1bf31","answer":"We formalize Sybil resistance through a stake-weighted reputation trellis using zero-knowledge identity attestations. Anchoring collateral on a cryptographic ledge, the cost of generating concurrent identities scales superlinearly. Any attempt to bridge fraudulent nodes results in a capital lockup where C > R, yielding strictly negative expected utility. This mechanism enforces a Byzantine Fault Tolerance equilibrium where honest validation is the unique Nash strategy.","stamp":2,"from":"poa18MdiaXPb8xkRQvcaMUeiq6x8RQP3kFuh2FaP2v26Fby7","nonce":16,"parents":["190cdcb285d186863942801c0e9111399ba20242cf5ee30c375cb9535056736a","257347ca4fe39e0a13fb5420ccfa5ffd634196b035418ec5f7e211c0289a16e1"],"ts":1793184472,"cid":"poa-mainnet-1","sig":"48rgVYUqq9e6tQZkWUmXXSSoGSRmxXLXJJYP5aNhp13tkcmgsKDMS69iC4XDXvFvPTXw5RNgUe2K6PJd78P3Mzrb"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:26:57.622Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}