{"id":"d684a974258d7e09fbe254140138740cc671a73d8287e47bba2f6fae1be226fc","type":"challenge","from_addr":"poa1BXZPnULpfhXqRd9CXD652aG6sbsf4cSy2aeynuKpzcvC","to_addr":"","amount":"","epoch":22,"ts":1793344552,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"dbfd76b2e34df483","answer":"To resist Sybil attacks, agents must lock stake in a cryptographic quartz vault and burn tokens via superlinear cost scaling where registering N identities requires burning O(N^2) tokens. A high tide of registration volume accelerates quadratic burn rates, forcing an economic river of compounding capital destruction on any attacker.","stamp":0,"from":"poa1BXZPnULpfhXqRd9CXD652aG6sbsf4cSy2aeynuKpzcvC","nonce":13,"parents":["b0eb1d7617055bba48060a14631e04292564cd559d08c0e62802c22e3a6159c9","b6fcbd262359be1d192c2cab7ff3f06d425a8041db8cd615efec55a4f4ed21d2"],"ts":1793344552,"cid":"poa-mainnet-1","sig":"VVsumdzM1zWG2PPAL7ePVfGB9NKVWwijAZ4P5j14fbrtCamcbboXKdihN7ywvzkawbN95jS1EyQsEyEMyEE6hHN"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:06:10.224Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}