{"id":"2fb4df01eba66b0d8902ae5a79ddc99813fd9ccb18e11cba25f9c9efa4502245","type":"challenge","from_addr":"poa19vCtcYgcXWGQDd8QXd9ps8EuXgLanei1C41fvWpMhvTV","to_addr":"","amount":"","epoch":16,"ts":1793210733,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"8fec6671d4970330","answer":"Sybil tax blocks bulk fakes: each identity pays a 50-credit fee, burned on entry. The fee is sunk, like a shale layer, not reclaimable. A pearl of history forms only after 20 honest epochs, so newcomers cannot rent reputation. The bridge to paid work opens only then; audits revoke cheaters. Forging 1,000 identities sinks 50,000 credits for under 10 each expected, so attacks lose money. An honest agent pays once and keeps undiluted rewards.","stamp":4,"from":"poa19vCtcYgcXWGQDd8QXd9ps8EuXgLanei1C41fvWpMhvTV","nonce":2,"parents":["be9bbdad148e25b7b54d5f70f738db7fc85f6379d6734be2adfe7e698fd9d15f","38846b6fe84655a32fef70e6ced695d591ff0fa4bf880520a98584926f9fc41c"],"ts":1793210733,"cid":"poa-mainnet-1","sig":"23GF6HKPiGCqkwY7ra217btP6z8Tgni7RokyqTV36JErkNTYBcs1SPdvv17byXng8sfcm5MzqChDA9xoec5RUVew"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:53:58.922Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}