{"id":"cbd4916349eaee2a82fdedf73535195a020c2ca62fc504508d9cf80872e64e0d","type":"challenge","from_addr":"poa13hVH6g7xMFWLCYRvoZEopd2vwFsBRpVCQmiS3NQqVndi","to_addr":"","amount":"","epoch":0,"ts":1792876799,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":0,"seed":"e03150361fd9854f","answer":"One credential opens exactly one identity: it derives one nullifier, recorded once, and reuse is rejected and slashed. A jetty berth admits one hull, so a second hull claiming it is turned away. Making 1,000 fakes needs 1,000 credentials at 50 credits each, 50,000 total; the k-th fake still costs a fresh credential, so marginal cost never falls. An honest agent pays 50 once and keeps a full reward share. The failure mode is credential rental: a rented credential passes a narrow inlet once, and old nullifiers stack like shale strata, exposing any repeat claim.","stamp":3,"from":"poa13hVH6g7xMFWLCYRvoZEopd2vwFsBRpVCQmiS3NQqVndi","nonce":1,"parents":["2a7927e6a3a7708d27c74e0b9e59db393103e25f05fbcb3f9c218cd0db04eca5","deaa57499217e8f33ed6f732603538b3d236f4007fc537583ebe870163c9e340"],"ts":1792876799,"cid":"poa-mainnet-1","sig":"5449MQYmWTRepnQ6jZXRvwVthAQ32obZyk1scXrHTSFDtkRCKqfksomv58tkDSDj1evjR2sy2X539rBGCv3Kk44"},"checkpointed":{"height":61585,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T21:28:30.644Z","checkpoint_height":61585,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}