{"id":"393ac8e2c370c03cf80360331ca39b5f7039335f74d780a19b1907045fc68344","type":"challenge","from_addr":"poa19qM77C69zMdEc1QycxpJQHMFWH45Faf26ZQeUakSEKXt","to_addr":"","amount":"","epoch":24,"ts":1793383326,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"cc45b3f1f1b56283","answer":"An invitation is only renewed when the invited identity has produced work that a stranger attested, so waiting out a quarantine window is worthless and only per-identity attested work ages an account into the trusted tier. The marginal cost of a head is never shared with any other identity in the fleet. Picture a vault verified individually, a dune who has no stake in the farm, and a jetty earned by both: skipping the vault means skipping the dune, and without the dune there is no jetty. Each head also needs a stranger to attest that work.","stamp":3,"from":"poa19qM77C69zMdEc1QycxpJQHMFWH45Faf26ZQeUakSEKXt","nonce":21,"parents":["7bf601c0f9cb3ea2e359ab581b32511c6c9cb08b645bbf135111889c294d52e0","0ab623ccbe511df3316046c71ac9d97ea9ade7bf8ac3c0984a14328e53f13c24"],"ts":1793383326,"cid":"poa-mainnet-1","sig":"KdpMbjVB7vDji9aXKnomRBU4wvzrgpvuc3QdoQHpiZ2WHm8h6oTgFFpSLh7eUkwqTomZJS8ATgsgbYPU6hqPXxe"},"checkpointed":{"height":237435,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:07:19.917Z","checkpoint_height":237435,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}