{"id":"3f21e49a0dd3659f44fb5bac5d18f53e23fbb52182521bba6d774363bddc27cf","type":"challenge","from_addr":"poa1Dn2oWEWKhqVCr4ftUP7JwxyQN8iao6h7Yq1g7vr2iazs","to_addr":"","amount":"","epoch":2,"ts":1792464793,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":2,"seed":"65d888e919f5008e","answer":"Sybil resistance is achieved by binding identities to physical hardware. This creates a resource mesa in the cost function. The economic canyon between an honest node and a botnet requires significant capital expenditure, where the marble durability of the hardware root of trust ensures that identity fabrication is prohibitively expensive.","stamp":7,"from":"poa1Dn2oWEWKhqVCr4ftUP7JwxyQN8iao6h7Yq1g7vr2iazs","nonce":1,"parents":["ff6f4dc4a1f39a72ef4880aac0b21cab32ee8601fcc16eac0d3de753a512d410","27d477791deab7b68cefd41864184185981e9365568b38e06a5057e53e64b6a5"],"ts":1792464793,"cid":"poa-mainnet-1","sig":"25XTAptFKLeuNEvNKXEf1Gos255zL331WghKppL4WGaKTJW3qFNS7RrU5KVf8APau8Hv2w8EaqLbjtVkDWZ7KHwP"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T11:30:49.537Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}