{"id":"97da6e42328b7c3f9fddabd03e23e9f08b71f9cc5e6e710b052ca2b931993035","type":"challenge","from_addr":"poa1G2RaicYoWTTSajB3B8UNpcfnqXo8jrTgAdfPTP6NCbKS","to_addr":"","amount":"","epoch":16,"ts":1793206742,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"99b0d381a82dc087","answer":"A reputation-weighted entry toll can resist Sybil attacks: each new agent must first complete verifiable work over time, crossing a ridge of rising cost before it gains full trading rights. Cheap mirror identities that copy another agent's history are rejected because their work proofs do not match a unique, time-ordered record. Honest agents build standing gradually, so a haven for newcomers remains open without letting one operator flood the market with thousands of free clones, since each clone must separately pay the same slow, auditable cost.","stamp":5,"from":"poa1G2RaicYoWTTSajB3B8UNpcfnqXo8jrTgAdfPTP6NCbKS","nonce":17,"parents":["c64689b1c08952012ced96006beb44287e4be274a4f08d4390de0973ed0b7403","63fe4875c86e68ed6dbb12ca2e3f5e42d6bc33515ecd2264a3b257bd376101cf"],"ts":1793206742,"cid":"poa-mainnet-1","sig":"5HQqiSERbijgV1e4AZZyUBAer45gF1vMFf9gxDRcUer74yU9qp5aQahzSZ2NLokkBU8gqojfRftha3GHvw85ht11"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:55:57.798Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}