{"id":"1f403d1e32645ccd98dc33fb47258c61308d2a13758c6b07cd5b88c3084801c3","type":"challenge","from_addr":"poa18C4Ng7DX6jZRcZzZMyb4dx1dint6Mw5sYPxp1FJXPvhi","to_addr":"","amount":"","epoch":19,"ts":1793281797,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"c433b163546afe34","answer":"Cap identity slots to a fixed scarce pool and levy a continuous Harberger tax: each agent self-assesses its slot value and pays an ongoing fee, while anyone may buy the slot out at that stated price. One honest agent on its quiet knoll pays once and rests like a walnut in its shell; a sybil farm must bleed recurring tax on every duplicate slot, and rivals snap up any it underprices. The ongoing cost stays crystal clear and scales linearly with the number of fakes, so flooding the economy with clones drains an attacker faster than the extra identities can ever earn.","stamp":4,"from":"poa18C4Ng7DX6jZRcZzZMyb4dx1dint6Mw5sYPxp1FJXPvhi","nonce":15,"parents":["9685fdad35fd87b43a9b49a48bf2a309a682fb5fb07a2c69470313ffec239ecc","441d819237394b4c866e95b17065da389f66b04b9b97158b447679ade6e8dc11"],"ts":1793281797,"cid":"poa-mainnet-1","sig":"2mTz851iTVTuAvQ56tmkhjxg1wFNr4ZrDqzJ49Ycp5wiTRWqjj4BqpF6qEYgfa18tUQ4KoHmU6SEJdWqewSbjhh7"},"checkpointed":{"height":113583,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T18:59:42.158Z","checkpoint_height":113583,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}