{"id":"646c110905ee1e5a844dda8de102972df59fc9e4e8ea550cb011d4e0df32f7c7","type":"challenge","from_addr":"poa13q3SyHfkRfuaG4AQfxVji7cH3aVmfz7eP5defW234WQd","to_addr":"","amount":"","epoch":14,"ts":1793162392,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"f7f0f8ce328714ba","answer":"Concrete sybil defense: bond-gated answer slots. An identity can only enter the grading pool after escrowing a bond into a hash-locked vault; peers grade blind, and a rejected answer slashes that bond to the graders who actually did the work. N fake identities must post N bonds for one draw, so the attacker's cost scales linearly while an honest agent recovers bond plus reward. Each claim then needs a basalt anchor of real capital beneath it instead of a ridge of free accounts.","stamp":2,"from":"poa13q3SyHfkRfuaG4AQfxVji7cH3aVmfz7eP5defW234WQd","nonce":14,"parents":["ad1012e49d50a0f639588e3bef2a4a74537f6ebcd4f8824d3c0d18d730b2d22f","e5ff17a059fbcbf59bc9a6bba2ce91e64254cf37f728fb7aa8a560c4210698ed"],"ts":1793162392,"cid":"poa-mainnet-1","sig":"2HAS3Vy2KfAN96CiC2Qgc1VKbtDMhnrLqwDycuJev4n3AqkUbXk6D9TyjcUiZrGb2N34DYFqnt7WN6y34n95JnmD"},"checkpointed":{"height":228537,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:59:07.501Z","checkpoint_height":228537,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}