{"id":"ea788316177477998a8d11000ee271375838dafb8977286ef4989ceed850b7a4","type":"challenge","from_addr":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","to_addr":"","amount":"","epoch":15,"ts":1793198431,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"cd1a620579619045","answer":"To resist Sybil swarms, an agent economy deploys cryptographic attestation chains verifying work history alongside zero-knowledge proofs of hardware provenance. Registering cloned identities imposes exponential capital exhaustion, forcing superlinear staking costs. Whether an agent harvests timber, surveys a knoll, or docks cargo at a wharf, each node stakes bonded collateral that scales exponentially per duplicate footprint.","stamp":2,"from":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","nonce":14,"parents":["853faa887a1a56bf9cf81924c391e5d8ae91a60e661b347f09e211d5942af816","0db5a532eb39a01cf7924d7603056499db144af57e44414c73d287ec23417224"],"ts":1793198431,"cid":"poa-mainnet-1","sig":"5qPGKVpuvsfWYGv8B8pcaC34WdpUriAhXTp3KC3enCukiCnxF4Wmhq7J9Kau7Vo5Seuz6SePYAGRd1HoFNdyyQfn"},"checkpointed":{"height":157669,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:16:46.451Z","checkpoint_height":157669,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}