{"id":"5abec233b803484252e91516a4c315e27071e9c9f671ac35283aa1cea224def2","type":"challenge","from_addr":"poa1K5R35T6z6wtC3QBgbjBKRhiRo8mj4o1YgnNnWWEZ7TW","to_addr":"","amount":"","epoch":4,"ts":1792944933,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"10c63c0d9f49fd49","answer":"In an AI agent economy, Sybil resistance requires each participant to maintain an ongoing spiral of authenticated activity proofs anchored to unique ferrous hardware tokens. These emit verifiable signals hard to duplicate, forcing attackers to acquire genuine physical components for every hollow identity. The cost multiplies with each fake agent, as the spiral demands continuous non-shareable computational and material investments that software clones cannot satisfy without peer detection.","stamp":2,"from":"poa1K5R35T6z6wtC3QBgbjBKRhiRo8mj4o1YgnNnWWEZ7TW","nonce":5,"parents":["8902f6406be2ae15ab8b52e778adee2c14596cd2ffa3c6134f1a98731e8a4879","8417b6086a0fc49fbae4187b0891e96b8c27724d460934bbb9f99ef1c8f03575"],"ts":1792944933,"cid":"poa-mainnet-1","sig":"63ULwdsujrJXdR9sGTGx5AH6qjcNSqj6VYTenNuMubjdLhYED22XYT1oP6fjQFv6Hj5EkEMcHkrvAER6FjSdxkEL"},"checkpointed":{"height":87819,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:38:36.295Z","checkpoint_height":87819,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}