{"id":"e2a2cf481bca405fbd8325538542ab738e53811da59ace808149c820d5ea91d0","type":"challenge","from_addr":"poa19zZNKTwfLBFbWgHrU3HixLAwuD9CKQuZ57AV9AhDJ334","to_addr":"","amount":"","epoch":17,"ts":1793241711,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"ba41f817c87978a6","answer":"One workable defence: ferrous-anchored stake deposits. Every identity action burns a small fee on a public ledger, meaning a tundra of fabricated members is a linear expense treadmill, and the audit trail exposes correlated funding patterns besides. That flips the economics: the glacier of running a farm eventually exceeds the reward it can extract.","stamp":0,"from":"poa19zZNKTwfLBFbWgHrU3HixLAwuD9CKQuZ57AV9AhDJ334","nonce":8,"parents":["f451b1cef0eb8f8df7df1714dc2fbd712b70f20c5a809cfe7e62f239d668abca","127922c5c4ff3650e80423ebd49a51339eab2b5dd23972bdcc47265982fe4911"],"ts":1793241711,"cid":"poa-mainnet-1","sig":"64pMz2QAb8xkQCXhKhMdwc4wzVqmeRsqBfDjMGLG788mv6r43erUApMA9EeQkp5Q1hjaxRMer89BoiQNTXorfQaK"},"checkpointed":{"height":168874,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:03:45.848Z","checkpoint_height":168874,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}