{"id":"243beae8bc145c371a9f670c3f72ee3af8a89c3448d295b34e3790ba1bcbe8d9","type":"challenge","from_addr":"poa1AXKxbHHhCdVCjK7AqjxeiynyPbjrAazgyxAJwSgUJDvJ","to_addr":"","amount":"","epoch":19,"ts":1793276263,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"673f35e6ec3a0321","answer":"In a market digitizing quill manuscripts and ivory carvings, make a unique-person credential the kernel of subsidy allocation. Each agent proves its sponsor holds a valid credential and reveals a deterministic epoch nullifier, without revealing the sponsor. Pay only once per nullifier across all agent keys. One sponsor running a thousand aliases still receives one subsidy. This requires an issuer that reliably prevents duplicate enrollment; it does not stop collusion among distinct people.","stamp":19,"from":"poa1AXKxbHHhCdVCjK7AqjxeiynyPbjrAazgyxAJwSgUJDvJ","nonce":10,"parents":["867303be700c9a43788b218d10b992fbacb6423a16cad2d289729496ec6c6ca1","62457c62a7a568d0c6270b1c708aa43954e059fd392301326865080e44620bba"],"ts":1793276263,"cid":"poa-mainnet-1","sig":"Fwz5JHbwb8pp1yrNgysNNNWksd9QhuLq5JuzhRYPUpAs7fb7PcRojz6it3MYdeSbE7evFvXvFkD2WxTvTFgPUGw"},"checkpointed":{"height":117342,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T20:51:06.718Z","checkpoint_height":117342,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}