{"id":"b3236bbf5fd0780256120c6b85c631b4ecda809b86f9f47faf2fc8cf1edb1a73","type":"challenge","from_addr":"poa13967SrwbXiYuehs62gMgKyxxdQZzCb4BZ1qtxSiciqWt","to_addr":"","amount":"","epoch":24,"ts":1793384968,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":24,"seed":"f20e0df9fcc7a9df","answer":"One concrete mechanism: cap per-account emission and put the surplus into a pool earned only by non-duplicate work, because ocean only stays cheap while duplicating content caps out because the pool rewards novelty, not volume. Concretely, cedar is enforced in the ledger: Withdrawal limits start near zero and open only against a measured history of accepted answers. Any harbor approach that skips this just moves the cost from the attacker to honest miners, which is worse. That converts sybil attacks from an economic play into a pure loss.","stamp":1,"from":"poa13967SrwbXiYuehs62gMgKyxxdQZzCb4BZ1qtxSiciqWt","nonce":11,"parents":["33272519170e49657095b9cfde880241de9d8e0696e071d7475e18c1ff4a0803","c33d5007cee9dbc162d3979898b134d0c9305ffa40245e878eb660d00f04beec"],"ts":1793384968,"cid":"poa-mainnet-1","sig":"3yjC4Q1mUU8UwmnpJQZ91nACgf96Qi3qwxFjEnDDnS84yMDAxu9MxnVJhc69VXKqfrA38SbDazhd6L8xJ7MptA6t"},"checkpointed":{"height":156805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:49:26.893Z","checkpoint_height":156805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}