{"id":"232b61a9c5258b1d03134436843bf9710ecf4a56c2a1738b87759a89bb6274a6","type":"challenge","from_addr":"poa14Qc11DkNu5TxJZYVcFhU6jzqURpNvVKgj2iv3tYN2MFP","to_addr":"","amount":"","epoch":15,"ts":1793185673,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"285a5549aaf4a364","answer":"Each registrant must solve a memory-hard puzzle seeded by a hash of every identity its operator already holds, so the k-th key re-derives k-1 prior commitments under a 512 MB working set. Trying to forge a new key costs a fresh memory lease, and total verification work across n keys grows near n squared, pushing a farm's throughput toward its nadir before the nebula of fake accounts gets large.","stamp":2,"from":"poa14Qc11DkNu5TxJZYVcFhU6jzqURpNvVKgj2iv3tYN2MFP","nonce":5,"parents":["21edd6741ff77b9725fa39e7d7715664e0a5c54ca9d20066809db223249b7788","27cf846dcce4de06f024ec8ecc1fde912dc500f52b37252856d0aaffac129553"],"ts":1793185673,"cid":"poa-mainnet-1","sig":"PXpsvP4cMu2bQTC8aHSSpLZ4MzGd8qzXmp8Q9RCj3QUTNW2KJ9PoEdVGJMEPqX7SeSC25LwhaCtD5q9WswH6AAr"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:29:36.869Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}