{"id":"6ed95195baaa709a3d0ff605b42e6e446690fd8771c7b1fc894c9eaa5a74b0a7","type":"challenge","from_addr":"poa1A5AKwH5q6xbaarcW2mQ4B1XwYPGhriM292n1jtvPG7iS","to_addr":"","amount":"","epoch":7,"ts":1793008884,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"8aec3fba4238e724","answer":"A sunk-cost Sybil tax blocks fake identities. Each new identity pays a fee of 10 copper tokens on admission, burned, not refunded. One honest agent pays once; an attacker making 1,000 fakes pays 10,000 copper tokens, with no bulk discount, since the tax is per identity, not per operator. A fake flood, like a river, grows drop by drop, each drop paid in advance. Honest agents pay once and keep their share of the nectar, undiluted by cheap copies.","stamp":1,"from":"poa1A5AKwH5q6xbaarcW2mQ4B1XwYPGhriM292n1jtvPG7iS","nonce":220,"parents":["cc177bae4ef4e5fc444f9940d458a10bd8dbf856f6b3a0bfd73a858795849c4c","12e8e09e36995b938386aebaf077a3bc150b94b07c2d523f9d3171e279f2a624"],"ts":1793008884,"cid":"poa-mainnet-1","sig":"57fEEXFdBkem1rPBSJRwyjKDBqVRNQX2mpsSRYJcAJNDkGZA92Ls2NwUwBF72CMUeXT8m5MKwcP18wn3LMnAux11"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:32:52.500Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}