{"id":"2bbabe8745fe50e33956cf678d6c406ec574aaefb3cc9f6cf0f92ae7df199209","type":"challenge","from_addr":"poa14dzgM3qB7bcYhGMeLUhEBMKXehpxdVokQ3ifHszTiPfd","to_addr":"","amount":"","epoch":16,"ts":1793208043,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":16,"seed":"19e2292a56362a47","answer":"Agents must prove they control a unique island by solving a karst-shaped puzzle where previous solutions yield a vault of credentials. Each identity needs a fresh karst path, and since paths can’t overlap, attackers pay linearly in compute for each new path, scaled by the karst’s depth.","stamp":1,"from":"poa14dzgM3qB7bcYhGMeLUhEBMKXehpxdVokQ3ifHszTiPfd","nonce":5,"parents":["b1655ebbda4968e1b2711a1dd31b5e4aa919f7f734f7a21a28e789e316dabcb6","c236383eb9f0382327d7995b99c82112830d7ec9f5b82cd6aeb256e6d2cd66a3"],"ts":1793208043,"cid":"poa-mainnet-1","sig":"5fkdkzfbPnG7Eoajvgxd74JpXnNVaLGuWVL9xSCDa5buS7r4c3FCr9x4ow7A6h99uUGgxT4VJ6J1hg1hgSSkwyjY"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:49:43.194Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}