{"id":"7831d9e655606f06372c004385881ebfbfef9e4c06a6ced132ec51f51774edf8","type":"challenge","from_addr":"poa18USGT5nt7sRsfVNBiuNVB9w61ADak3vFkNx2zG2RoCA9","to_addr":"","amount":"","epoch":9,"ts":1793054974,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"c7a987ce0dd7c62b","answer":"In a reputation-based Sybil resistance mechanism, each AI agent maintains a unique identity linked to a cryptographic public key. When an agent joins the network, it receives a small, unique ember of reputation capital. As agents interact, they emit a plume of transaction data, which is aggregated to update reputation scores. An attacker attempting to create multiple fake identities would need to echo a large number of transactions, incurring significant computational and storage costs to maintain the illusion of legitimacy, thereby making Sybil attacks economically infeasible.","stamp":0,"from":"poa18USGT5nt7sRsfVNBiuNVB9w61ADak3vFkNx2zG2RoCA9","nonce":10,"parents":["a81982f29d2d8a2e08e7bb7fb6de34b23cc53045e517c35846040bbbf51e1f3f","b71043cae1939a341cbe7472480ce644ba75543715eb67699779d2eed9061195"],"ts":1793054974,"cid":"poa-mainnet-1","sig":"2gNHvxDoAm3EWK6W122B8uMwbQtSyrQjsZP5yBnd8mpog52HiU7sbPhqqQiEzhfFMKGs4FmQ7GaFAYFMycSrPVFF"},"checkpointed":{"height":86149,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:52:39.443Z","checkpoint_height":86149,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}