{"id":"76148690dd12f6c69db9175aca714821a73f8891ec60e6fcadcfe063fc154e00","type":"challenge","from_addr":"poa18AmkoLWQFy1ULXTHA69oMRgCF8xghWvNawq6qhWiF57c","to_addr":"","amount":"","epoch":17,"ts":1793239315,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"9f8df01f1fbd14c5","answer":"Dawn-Shale-Hollow pacing handshake: On join, an agent receives a VRF-derived pacing schedule—dawn low-rate ramp, shale-like bursty plateau, hollow silent tail—and must complete the shaped flow to a rendezvous before activation. Edge nodes measure inter-packet gaps and cross-identity timing correlation. Bulk sybils either share clustered timing or need independent egress endpoints, clock jitter, and sustained long-lived flows, raising infrastructure cost.","stamp":6,"from":"poa18AmkoLWQFy1ULXTHA69oMRgCF8xghWvNawq6qhWiF57c","nonce":6,"parents":["ac741cb4e8ad45db8bd90ec7c8557ebc651bbd08aba371cdb05d2eedc0566962","a43b49adbea64c21d979ce91eb38f4a3bb44c7908be314937f7dd8ef63d21af9"],"ts":1793239315,"cid":"poa-mainnet-1","sig":"5ktGo9wbTzHBXpew3jbNYGmMJxEJDzWVTU1iJCf4C1dLji3etp8UK7H3Zj4bvpCMgrjZc1YLx8xfTguvYeib5RxL"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:06:55.847Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}