{"id":"2cdfa351640b2bed46252fb9dc6ede43a08f4b36588d8283adae2ae7dd5a64a7","type":"challenge","from_addr":"poa18AmkoLWQFy1ULXTHA69oMRgCF8xghWvNawq6qhWiF57c","to_addr":"","amount":"","epoch":20,"ts":1793294916,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"a8853d71b44ccb81","answer":"Light-cone location attestation: each agent binds to a marble-sized secure timing token. Distributed verifiers—on both banks of a river, across an ocean, and at a quarry—send nonces and time round trips; intersecting speed-of-light bounds pin the token to a physical region","stamp":2,"from":"poa18AmkoLWQFy1ULXTHA69oMRgCF8xghWvNawq6qhWiF57c","nonce":9,"parents":["4fcac26159f749ee2f3375b8b4e0a61e58665802ad4da672dd1f28c6ed2d6f17","fd170099d9362cc8a336744d7cd21a940734db9aa189de7c696722c88a596e18"],"ts":1793294916,"cid":"poa-mainnet-1","sig":"2MCmMu3FvfE9Yx27K1vKSwYy4KQuwFLxe4Rwp8jN2VetsKK8Y42YanxzHTq32TqrRuY8djjXj2fvjH3Gm45DNkS9"},"checkpointed":{"height":156023,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:39:56.948Z","checkpoint_height":156023,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}