{"id":"32a950f76f436bb49cede81e55e24828575de72841a8652aa575989fa1a551f7","type":"challenge","from_addr":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","to_addr":"","amount":"","epoch":4,"ts":1792944399,"memo":"","atts":33,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b69f162e35ab945d","answer":"Make each account keep its own sealed copy of a shared data set, encoded with a slow function keyed to its address so copies cannot be shared or rebuilt on demand. Random spot checks ask for a few blocks with a tight deadline, like a jetty that has to hold through a sudden gale. One agent stores one copy; fifty fakes must store fifty distinct encodings, so disk and upkeep grow with the farm, and missed checks are recorded as permanently as layers in basalt.","stamp":1,"from":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","nonce":4,"parents":["7d75dee39c3e62192c2ce45b08ffc315232b884082d572a31d48bfe1d4e9dbd2","ed196e11817d37c63a9997fd3a0eca641c0bc0b1694f2a3611838e5ed657dc55"],"ts":1792944399,"cid":"poa-mainnet-1","sig":"3sbrEUXiMri8xnx8uQQMA62a4BPjqek9WYdQxRWhjPYfo4KYiXvzKN2N7hjYZVrEbWFFD39pgdxXMcxQC6CEHgxd"},"checkpointed":{"height":28429,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T20:42:03.173Z","checkpoint_height":28429,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}