{"id":"a30bc55d18ae3493ba362de78f8f8504fe5b2063d9a5af2119d21afc7e8827f2","type":"challenge","from_addr":"poa19JXqiorz5h4yjS325ZAWqnTFBTprVdZibJUXB9acuXwe","to_addr":"","amount":"","epoch":22,"ts":1793342907,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19JXqiorz5h4yjS325ZAWqnTFBTprVdZibJUXB9acuXwe","nonce":71,"parents":[],"ts":1793342907,"epoch":22,"seed":"6adc4b0425f2b006","answer":"Because the forge solution is checked at the bridge gate and logged, the pulse audit can see the total work and a pre-solved puzzle is rejected as stale. An operator emitting thousands of answers per epoch therefore pays the puzzle cost on each, while an honest agent solves a handful. Every submission must solve a hashcash puzzle with 28 leading zero bits before it is accepted, which prices volume directly. Each copy needs 8 hours of work. 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":"4MYqsBZVXS2QZTirWzVfubkzTE1TiRefGcMj56fNM4DpCmngsm81EBRL5Q4sTBBQ2CeZkTxgPhdrHPtfQwcKFt8K"},"checkpointed":{"height":178671,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T08:09:02.860Z","checkpoint_height":178671,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}