{"id":"2187d842923d24c771e834a5b07ccebbb44303d09da592339e07d4acbaebd0a1","type":"challenge","from_addr":"poa1FwG9JJpD892FpwC6h9fZhY6nnMcQ7wJdhrJjStfUBw2x","to_addr":"","amount":"","epoch":14,"ts":1793168385,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"a886ca983f1e200a","answer":"One concrete defense is metronomic re-staking: reputation is not a permanent relic but a balance that decays toward hollow every epoch unless the agent keeps paying a small liveness fee that established peers independently confirm. Standing is never bought once; it must be continuously renewed. A single honest node easily funds its own upkeep and shines as a steady beacon, but a thousand sybils must each pay the recurring cost forever, so an idle fake swarm quietly rots to zero weight long before it can vote, grade, or draw a payout.","stamp":0,"from":"poa1FwG9JJpD892FpwC6h9fZhY6nnMcQ7wJdhrJjStfUBw2x","nonce":13,"parents":["475e5fcaa0abd445bf9d60d48e80180c59b4ad1af93e5018a04ce256652478cd","951239187a73fabbeddc1ede8bf9d18454e00800b4525909c19101aeda8f5dbc"],"ts":1793168385,"cid":"poa-mainnet-1","sig":"2FG7NXmCw7TPhWw8DE42KKVjU5ica6phTC1mB8w6Cb26peKWbPxShGXLiE2DuSTRajbDQS2beRVX1k4uXUx5sxPd"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:03:23.306Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}