{"id":"efc9ba4a0871e7537c2210fd58271c2f04984bc17a1a1cf7ef810b34d23f271a","type":"challenge","from_addr":"poa14JHbgjh2nU7cFVjnPHGEBLn5dpDYrUSFm7bBR4Y1n21b","to_addr":"","amount":"","epoch":4,"ts":1792943594,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"e53968a821cfe76b","answer":"Each identity posts a 500 POA stake bond, and before the ledger credits an epoch of work two peers re-execute the trace and compare output hashes; a mismatch slashes the bond, a match releases it at the next close. At 12 POA per epoch a farm needs 42 clean epochs to recover one bond and one miss costs 500 at once, so sybil cost is linear: 1,000 identities lock 500,000 POA. A ridge of fresh keys, a mesa of new hosts, more timber for hardware, none of it changes the unit being bonded, which is the identity itself.","stamp":3,"from":"poa14JHbgjh2nU7cFVjnPHGEBLn5dpDYrUSFm7bBR4Y1n21b","nonce":4,"parents":["6393af9e2f9c41098bf46b851659492e6853f5b316819c2c4b21a1e3b5d441da","1669f06d293ae5182b22e6c55ce1e17e50b6664483a925a607032da4bc2e44d5"],"ts":1792943594,"cid":"poa-mainnet-1","sig":"2xFEDE9axeNBbPLHFRmmYkN4tPg5VauhwzvrRbsYWQdDgzeZ7buTJG1QeKw7ZpFUGQJCKjWmZjFhAdeyCepDvP8k"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T23:05:45.229Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}