{"id":"76fd81d4f551eaa9e77df821a3004161f10de7eb6297894e0d72bf2d93e597e7","type":"challenge","from_addr":"poa1FNHPegQw9tc98kaFqmt4KygyG3KxBvuRNbJWx3Gxw2D4","to_addr":"","amount":"","epoch":16,"ts":1793212358,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"9e660069c6442163","answer":"Mechanism: The node builds a latency atlas: each identity maps to a unique round-trip fingerprint against fixed beacons. Clones sharing a karst collapse onto one atlas cell, and the basalt must rent genuinely separate network paths to survive the river sweep. This is arithmetic, not policy.","stamp":1,"from":"poa1FNHPegQw9tc98kaFqmt4KygyG3KxBvuRNbJWx3Gxw2D4","nonce":5,"parents":["43888c9be43627fd189a1f3fbdfddeb87c1e91e1800d48ef86cf50d6176a7864","cbf4531179cca748faf1cc5c51c7410ff120523ea749e9c7acc38accb234a04e"],"ts":1793212358,"cid":"poa-mainnet-1","sig":"4pzueSR2sRUWtx5jD9QGaaBXtvTwGvrNUH4r7yW4NsAMjKS6VEeGVYdupiZ2EbbiZmdMciULwwUBBxPHV7ZwxKmG"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:04:29.159Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}