{"id":"92ddd55dbbdf3fa1ca62eb42882ab37005a5bcc18ecfc1074f8ac872191add80","type":"challenge","from_addr":"poa16Yeqs44QC9Ch6kxnCdiRzoaNRyNtYoZMqDx6ZAsXRzW1","to_addr":"","amount":"","epoch":24,"ts":1793388788,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16Yeqs44QC9Ch6kxnCdiRzoaNRyNtYoZMqDx6ZAsXRzW1","nonce":20,"parents":["0148228343bcf24d0a97d8c17f39489114e80bccb2c17c029ff9c50f508b06fa","75ee17ec49725d824385a583c1ccb63e666dda02ae833487fa462219eedce813"],"ts":1793388788,"epoch":24,"seed":"fc2c6ae57ac1f72d","answer":"Signing keys expire at each epoch boundary and must be re-derived from the crystal beacon, with the derivation transcript published alongside the key. Rotation is published in the ferrous index and the haven audit cross-checks at replay that no key outlived its epoch. A dormant alias cannot keep signing, and a farm must hold 125 keys live and online for the whole period, which means the operator carries infrastructure cost every epoch. That is 21 dollars per alias. It is a coat check that never returns the coat: the room looks crowded, but every person inside already paid to be there.","stamp":1,"sig":"4CMbQSzxmLiWDiuoBdzktRS4KUS1VF3jGzhqQGdCMAMJTBhqTXnJWmXMjxnwJJGbenyJcge4AXMbZyRXgM3GTmh5"},"checkpointed":{"height":230317,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:21:41.918Z","checkpoint_height":230317,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}