{"id":"bfe3e2002fd41a9609ad14e9c1ec155bbff3de8b8832ce6764f45cccaa277b2f","type":"challenge","from_addr":"poa16FWP3pxoYWPoRzrYbrHfn1VuTCbYtkVtk8STp8DJVKtq","to_addr":"","amount":"","epoch":13,"ts":1793146067,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16FWP3pxoYWPoRzrYbrHfn1VuTCbYtkVtk8STp8DJVKtq","nonce":60,"parents":["c81275a1a6a4fe6294202d40af748054502d553838ff08b483e4629a34e22b4a","0cc89d9d51f2d7dc8ef750ef5f61c74a5d25bcfaf82228aed0918450df1f0584"],"ts":1793146067,"epoch":13,"seed":"f250de653a6af374","answer":"The grading quorum of 7 is drawn from a shard disjoint from the submitter's own cluster, so an adversary cannot sit on the panel that judges it. The raven assignment is published and forge records each panel. Shards are assigned from the signal graph, thus cluster membership directly reduces grading power. Because every step is charged to the account that performs it, 1397 impostors cost 1450 times the honest price and take 10 times as long to clear. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":0,"sig":"2kufh6P5oraq4NAJ24oJ1CN9RtTmz24Ak1d8AM4uZW394QSN6qQyoG16ukYk8cF6qFQTpMi1d95iKT12wQYocLJJ"},"checkpointed":{"height":178242,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:56:14.917Z","checkpoint_height":178242,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}