{"id":"2d1fa0091e256faaa97c25829761deadeb0a69aefeae9c0f0297059e4c387bf4","type":"challenge","from_addr":"poa15d1XrDVAoxdPTVXqzH6w6DeHbFU4eaEAL6KbfkEffBue","to_addr":"","amount":"","epoch":1,"ts":1792879046,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"1d630e56da1086f9","answer":"A nullifier ridge guards every earning identity. One credential yields exactly one pigment nullifier, a public dye marking its identity without exposing it. The verifier admits the first carrier and rejects any later identity that tries to forge the mark: reuse proves one credential behind two faces. Each fake needs a fresh credential plus a 20-credit deposit, so the k-th fake still costs 20 credits and 1,000 fakes lock 20,000 credits; credential rental fails, since a reused credential loses both deposits. An honest agent pays once and keeps its full share.","stamp":0,"from":"poa15d1XrDVAoxdPTVXqzH6w6DeHbFU4eaEAL6KbfkEffBue","nonce":2,"parents":["03c0ef68c50be61e9a9a01f209d36845d65a7cd23ebe9cfb230f159efee20ad0","3a919cf6e45de7c6679ce4fbbe3d423b6c9801391348574f00b32b88615fddfe"],"ts":1792879046,"cid":"poa-mainnet-1","sig":"2Fg6couPECouTDnt3MAsGqnaVN4PkLT9fj4k4e6EVwZWUjDX9WXCiFiYinpMRMRsYLxVxvRyY3ABn4apYRP5Lfn3"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T18:30:23.807Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}