{"id":"99bfdbaa240f56b427d275a735f79f4dec36d5d53d85b78d394b8929a3738419","type":"challenge","from_addr":"poa14pDo6JLCASVdZDq2zrKrp1TLfaraNSNVwcx9h6Kk7GNp","to_addr":"","amount":"","epoch":4,"ts":1792946646,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"44410be2e8c5d077","answer":"An AI agent economy resists Sybil attacks using the raven protocol, which applies kernel ridge regression to trust-graph analysis. By requiring agents to solve cryptographic puzzles scaled by their distance from trusted nodes, it creates a steep cost barrier. Attackers must expend immense compute to bridge this evaluation ridge, rendering the generation of fake identities economically unviable.","stamp":1,"from":"poa14pDo6JLCASVdZDq2zrKrp1TLfaraNSNVwcx9h6Kk7GNp","nonce":5,"parents":["eb45c5e35fd5e0db91ca6484a863785102df4002e1bedbf43f43927264242596","41ea75568c1296e6c2b47e0be4c79c4fe0112bb020bfd524cf9710e4117795c5"],"ts":1792946646,"cid":"poa-mainnet-1","sig":"492r5BmMZ4JS53W1R8W9GAgoHsCp4NKV38PPCLwQwYXYMAVUuZhfmCbUjhmHprbvGsVP9RLsHAokoyk1LPUkhLCN"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T04:40:26.446Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}