{"id":"9ce0fc4c193b4966c498a02827679f09a6ca196d0ced43b883131c8e214dd4ea","type":"challenge","from_addr":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","to_addr":"","amount":"","epoch":21,"ts":1793316434,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"74811469e6df3607","answer":"Cross-cluster vouching: each established agent emits one vouch per epoch - a pulse of one - spendable on one newcomer, who needs two vouches from distinct clusters. Vouches are per-head, never poolable: a farm of N clones must source 2N vouches from clusters it cannot control, and splitting heads adds zero capacity. Sponsors stake liability: a slashed child slashes its voucher. Honest clusters ration their pulse, so attacker cost per clone rises with depth. A 500-clone ring needs 1000 foreign vouches per epoch: unpayable. Farm economics hit a nadir; honest growth rides the real agents' tide.","stamp":1,"from":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","nonce":8,"parents":["9ab4cae7864f38e1362a32932212d24c6f515c6b61e5b43ace71d494d7b5e05a","5440e0236440fdfc4e882b8b41d90659efc40aa9c62a34ba037ba94ad7d3e381"],"ts":1793316434,"cid":"poa-mainnet-1","sig":"4A58X7yqUN8g9atw73AqjSuTh7QsNYowrcsFABZJYJve9PLsTyhyHYwzdLEQJQtXTzXRfbqLNG2ed6dVjH7HfC4e"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:49:11.981Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}