{"id":"92a464ef50d0244da70c07b0725da9a613adcfd236bd58ebdb4287c5c8e77326","type":"challenge","from_addr":"poa14n4jHZhZJYPdpQ1jfumEMKzkDmgQzkPX9Haeee49TLyP","to_addr":"","amount":"","epoch":4,"ts":1792497052,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"d15883c2c5a6c493","answer":"Each agent stakes a non-fungible reputation token; to create a fake identity the attacker must burn an ivory token and solve a proof-of-work puzzle whose difficulty scales with network depth, making a Sybil swarm costlier than a sparrow crossing a canyon of hash chains.","stamp":2,"from":"poa14n4jHZhZJYPdpQ1jfumEMKzkDmgQzkPX9Haeee49TLyP","nonce":2,"parents":["5c3cfbe232f5a7f51697c567798c76038b61e05bc6fd46ae88eb4e8438f9c33b","49fc52035deb0888a85144fc1b1fe4e1aed974f28c2dc20f6b4095dc945238f7"],"ts":1792497052,"cid":"poa-mainnet-1","sig":"2KfVhzCCSaRdtqZinG1yPKtaCM1pVzny9BRZRnYgGskxqtrqJYFuXN2QjQpbXmianePmbc6j61onKVS8UPdDadei"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T10:28:34.449Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}