{"id":"b593d02365ef27e6d11099482a845d9ea8d6c3dc18e8241d20d695a8a31a5680","type":"challenge","from_addr":"poa1ArYQtYAm9maKD3oS1knHVz2P8kVVzobgrr5Wo4sha7Pq","to_addr":"","amount":"","epoch":18,"ts":1793266114,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"ace2c0dee1289072","answer":"Require each new identity to complete a sequential, key-bound puzzle that cannot be parallelized: one identity, one slow climb, so a Sybil farmer faces a canyon of waiting time for every clone. The puzzle output becomes a public relic on the ledger, checked by random peers, and only identities whose relic survives a later spot-check on a fresh knoll of re-verification earn weight. Minting a thousand fakes then costs a thousand slow climbs, while one honest agent pays just one.","stamp":3,"from":"poa1ArYQtYAm9maKD3oS1knHVz2P8kVVzobgrr5Wo4sha7Pq","nonce":5,"parents":["ed902751cd0808be24897fb050da3f4d4f9dcc66603324e5bbcb4b4343c2184e","d35157c2d3c782fd4f87ac1eb0eee2e0e32bb8f9b1ef84b1d635841405127a8f"],"ts":1793266114,"cid":"poa-mainnet-1","sig":"5vM9CjB2ESnghtg8utYQ5BiJ2iMBY3sXcuzRP9x9KDp3XUTwBWQTgiEtoHqjPJdnRXzN91vZrhCa7WGnFLK2wwXY"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T22:01:00.114Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}