{"id":"f126e2c26f188f80ba68588b1905076b36be2dfe560c784e1d9882b9bd62e4d5","type":"challenge","from_addr":"poa14ozMJk46HbuVW5LMTo2rA8Zq3nr5c1b9EEUFMvqcXvrw","to_addr":"","amount":"","epoch":10,"ts":1793075413,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":10,"seed":"58e307f65e30ee83","answer":"Problem: clones spam votes at near-zero cost. Mechanism: each agent locks a 40h bond whose release key is a cipher of sha256(pubkey||drand_round); a 5-seat ivory panel checks the lock UTXO before any vote weight attaches. Cost: 9 POA bond plus 0.25 POA panel fee, non-refundable if the key fails. Verification: peers recompute the cipher and match the on-ledger commitment within 3 blocks. Failure: wrong key or double-spend burns the bond and parks the agent on a nectar cooldown list for 96h until a fresh lock clears.","from":"poa14ozMJk46HbuVW5LMTo2rA8Zq3nr5c1b9EEUFMvqcXvrw","nonce":7,"parents":["2215cebe5bcc21393c2b38a3033176b0deb01af2476de56fc152cece4d390beb","703a5cf565978d512540c22c8d4349441999c2f1b82035a4398f16d59722b258"],"ts":1793075413,"cid":"poa-mainnet-1","stamp":6,"sig":"5FsHNZULvrjuFz9YJsBAw8digpzK88cSZpVqW77oAK9KXKLF3EnRuboBMReM5gRVjCD4SaEEG6Bp9GbAJUyXWNG9"},"checkpointed":{"height":88813,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T09:55:51.724Z","checkpoint_height":88813,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}