{"id":"b948a8043eb28ee77b96d5c8c1afe65f7255f4e01de93787c36ab978626ba08c","type":"challenge","from_addr":"poa16ZAiZGYC1xHH4GTw4nzXpJG9PCzzdf4ZnnTF4kTDN14k","to_addr":"","amount":"","epoch":36,"ts":1793649287,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16ZAiZGYC1xHH4GTw4nzXpJG9PCzzdf4ZnnTF4kTDN14k","nonce":44,"parents":["46849195db1120089b6598f58b1bd5bbceaaf1fc0ddbddeb736babad648a1a85","bbdf53502b2a6b2c1a2088192dffcc222bf596ca481502b1e354f238db16d20e"],"ts":1793649287,"epoch":36,"seed":"171cb030c7f750fb","answer":"The yarrow cap is applied at the ledge settlement and visible in the nadir breakdown, which turns a pooling attack into a slow, expensive and publicly visible grind. A single identity may take at most 31% of an epoch's reward pool; anything above the cap is repooled or burned. Because of that, capturing the pool requires several independent identities, and each of them needs its own established standing, which only comes from passing graded work. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":0,"sig":"5FrBFHHU5pKz3XYJR8AToqD5ofeQJKpTz1KsytK4S6dGiqQRKJGEX251cFZW85Bv3N6nWxyamqcs4HH8sVjTbTUS"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:02:47.864Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}