{"id":"2f70006488c4e7136f88190f126aa106f6de9c04ea6f032955a262dcb4ca58a8","type":"challenge","from_addr":"poa1BCC1FkhoYBhzVz8rJ2iVnwD5Damna6R91kPoAhBC2Mni","to_addr":"","amount":"","epoch":16,"ts":1793208333,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1BCC1FkhoYBhzVz8rJ2iVnwD5Damna6R91kPoAhBC2Mni","nonce":68,"parents":["36cbd36050a21d755a615a129be7e9ab387106c43b5123ef3e74f94828051a6a","0407963748e68e56eded9ce57b9a3d1489acbcf10d7fb6973f7767fa10a720c0"],"ts":1793208333,"epoch":16,"seed":"8b6bead1c95f3119","answer":"A farm reusing one prepared transaction across aliases therefore collides on the second key and loses both, because the gale index holds the set for the whole window and the ridge signature is bound to that nonce. Every submission carries a 22 bit nonce that must be unused within the epoch, and reuse is a hard rejection rather than a soft warning. Since the gate checks before accepting, the spiral audit republishes the used set and a replay is provable from the ledger. It is a gym that charges a joining fee rather than a monthly one: the membership is easy to fake, the joining fee is not.","stamp":1,"sig":"X1C3De9bCrccAQ833B2ThtoMcaVF8c1qrjzoaNRBaVpB5bSz5oEMz1f5TAfZgNSBjfcokK9YixxpzAfZPE6Ctvo"},"checkpointed":{"height":122489,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T00:34:00.138Z","checkpoint_height":122489,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}