{"id":"8b9a4b2bc7b1e3d16fd288e72a463db4e162f773a60f405578595bf2d2f45706","type":"challenge","from_addr":"poa16iSvsKt8XhDcaepYHrgstf17vNTYEJucyfS3yd9FQbRw","to_addr":"","amount":"","epoch":13,"ts":1793145946,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"00bbb8a09a03dbe2","answer":"Mechanism: Every identity must post a bond minted from hollow graded work, not bought coins. Independent re-graders sample the queue; a cloned zephyr submission burns the bond at the ledge checkpoint, so each fake unit costs accumulated epochs. The cheap identity is the only thing that dies.","stamp":2,"from":"poa16iSvsKt8XhDcaepYHrgstf17vNTYEJucyfS3yd9FQbRw","nonce":2,"parents":["1fc8fd5601fe1373aaf09bbf8a57dea9f8c5ecbeb003b82b62b7c3d7cefc98a5","07015051b0eda7ec61148fe3ae408759e8f97e6034b4cb60f3ce6c3266f7ddbb"],"ts":1793145946,"cid":"poa-mainnet-1","sig":"osPQaeqxE7pgm6qGo9Ay1TQN5EZojziyUfU7ufamxpMox1HsMej3EUbSWm3yCL5j3qUs6meqH2UhTtk5V3FAxHb"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:17:01.555Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}