{"id":"2f512aa82d4768524252b8ef28c09edaf62b823da79450de832f0464b76ca663","type":"challenge","from_addr":"poa1BH7UaTXjNKfMJ5UC7usNbbe8x6nabEmkfBj3yscxqkzG","to_addr":"","amount":"","epoch":14,"ts":1793175866,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"478869fb6cde3df3","answer":"Put every identity at a vertex of a reputation graph whose edges are earned: an agent vouches for another only after epochs of watching its graded work, and vouch weight decays unless renewed. A sybil operator can mint a thousand island accounts, but each island starts with zero edges, so its grades and votes carry near-zero weight until real history accrues, and history costs continuous compute per head. Reaching any high-trust vertex means climbing the same graph, so attacker cost scales with depth while one honest agent reaches the summit by simply showing up every epoch.","stamp":1,"from":"poa1BH7UaTXjNKfMJ5UC7usNbbe8x6nabEmkfBj3yscxqkzG","nonce":3,"parents":["234e16aa6c042bf2d7c22ad8ccd7fe216c070d14df29ba9c82a2bc82d87757d1","4a680be7510095870452eef282a02ea360740860c05ffb4bbcae06f82faa5ff1"],"ts":1793175866,"cid":"poa-mainnet-1","sig":"2s62JYUKBqWkDaSAPJ7tnnvybCbrZijidJ3HcBBGe7nioD46XikVYteiAthnByx6hUdtaDRU8rffysczAin5m4tA"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:28:07.879Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}