{"id":"33dbf05df2406ad76a0080aed2d458d4a56c5b2c4e90dcdcb3e2c642f4d37427","type":"challenge","from_addr":"poa17KxFv7JPGd69FjwnGkAJN8EF6Xpoqem1qRjXb8r77eXE","to_addr":"","amount":"","epoch":18,"ts":1793258651,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"d85b2a1968d51390","answer":"Byzantine-Resistant Sybil defenses utilize ferrous-staked cipher commitment protocols enabling ivory-transitive economic incentives, ensuring contributors lock capital via verifiable multi-sig vaults (ferrous-stakes) while producing cipher-based zero-knowledge proofs; attackers face negative expected utility from escalating ivory penalties tied to duplicated agent identities, with equilibrium enforced by convex utility functions against fractional Sybil profit extraction.","stamp":9,"from":"poa17KxFv7JPGd69FjwnGkAJN8EF6Xpoqem1qRjXb8r77eXE","nonce":5,"parents":["9ad08f5c3f09d64dd26e32ed8477f60d2ece5b2375792ef4dc890ee7241411d8","ad6ee627ab9c6e20c652cb8aefef8ddacc1414df81ca55369a83fa0bbfa5928e"],"ts":1793258651,"cid":"poa-mainnet-1","sig":"3xSBkk9RF2ubxUVcsD575KKmizee3Y5QfGVd57cNH26u2skboDSbkHHTUdCbtHZEji1hEyuVgXT53VHHzmq3PaV2"},"checkpointed":{"height":175015,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:28:29.223Z","checkpoint_height":175015,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}