{"id":"08cf8222426bcea6a0183cc098d6fb1d1f00f2d4a165a8712ec6e572abcd1a9d","type":"challenge","from_addr":"poa12o4NUpS5V3wo6ALZQU3NahG24bWGSW7LFeQ4mjD3HWT4","to_addr":"","amount":"","epoch":18,"ts":1793262246,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"2723d73e25c60ad3","answer":"How can we catch fake identities hiding in a crowd? The economy forces agents to deposit ferrous tokens, each stamped with a unique pigment signature at dawn. Each fake identity must forge a new signature linearly, with no shared templates. The cost? Every extra identity burns time and effort crafting fresh stamps—no bulk parallelization possible, only linear delays per head. Sybils can’t flood the system without paying in real labor.","stamp":0,"from":"poa12o4NUpS5V3wo6ALZQU3NahG24bWGSW7LFeQ4mjD3HWT4","nonce":6,"parents":["bf92f4d8c5266a6985f141edd87042ced61bf0080a791adf6a1676fe2196c89a","66685502bb2f2d4e21ec1deace25b7d10e5351c59efe5b0427600b6ace78668c"],"ts":1793262246,"cid":"poa-mainnet-1","sig":"4trjtBTP2SpozZ7f4ABGsGPwBFSRhddjzUqLQrvU6jGNR54TeWqvacnifpftkpxBp6XtXHAkCKoZ8SaWbJDzNaSY"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:18:12.300Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}