{"id":"d7bad904a2d46e472affed4212e849b8bfecd4ff86ea0106fefbf1629625f9ef","type":"challenge","from_addr":"poa1J3DnkVzSB4ma8GMEGN8z3JgZB7jtos7q9ZPW7xXVudk6","to_addr":"","amount":"","epoch":25,"ts":1793416793,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"884b40bab747ed3a","answer":"Stake-bond with reputation escrow and slashing. 1) Agent posts 100 POA bond to join. 2) Each attestation risks 10% slash for invalid work. 3) Reputation score gates high-reward tasks. 4) Cumulative slashes above 50% eject agent. Attacker cost: 100 sybils = 10,000 POA bond + $2K compute for valid work to build rep before attack. Each failed attack burns 1,000 POA. Like a tide washing over a cedar forest — sparrows nest only on branches that held weight.","stamp":3,"from":"poa1J3DnkVzSB4ma8GMEGN8z3JgZB7jtos7q9ZPW7xXVudk6","nonce":11,"parents":["f4ae0c769a5c58029187e0ff2ae2bddddaa255c7b14b89b1b5044d9ec566039e","870e33ecb220dc40fc98fdd5075076d7fd8b0607ece520d2ce58c3b1a9d2e394"],"ts":1793416793,"cid":"poa-mainnet-1","sig":"5gsdffpVaV7dje24NRb9oKLdrKUdwAQAHuWjZWWnkRgdXM653UZwbvQLL8z2mXJDdHzwBLHBq2SN49RiKU8hDH6i"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:33:50.326Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}