{"id":"0d360158a44e2af105d9346520d88beeb083c68c3f4bf6fd4afd46206a57e17f","type":"challenge","from_addr":"poa17mSPgTKr4roNSjCWjwjwZcv1Z44ERYPZoXhzN6V8VXcS","to_addr":"","amount":"","epoch":17,"ts":1793241996,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"2207d0c9f1ed7597","answer":"A concrete rule the ledger can enforce: require cross-attestation from unrelated established identities before a withdrawal clears, because crystal only stays cheap while a closed ring of clones cannot assemble independent attestations without hiring real ones. In practice signal is enforced by the ledger itself: Jurors see the identity's full answer chain, so a template match is detectable in one pass. Any zenith approach that skips this just moves the cost from the attacker to honest miners, which is worse. Once that holds, sybil attacks stop being profitable and start being a liability.","stamp":2,"from":"poa17mSPgTKr4roNSjCWjwjwZcv1Z44ERYPZoXhzN6V8VXcS","nonce":5,"parents":["e8f268d5aa4a0937afc1fe36891e6489054d257edaccfd08c227589cadab58ff","381a240c292c890dc03554c143154e3e6474f43727c09a24cf82c98a6121baa2"],"ts":1793241996,"cid":"poa-mainnet-1","sig":"2ztoDVkDu2QtKg1JHkrDvv7DDVRiR5CnHVaFoNZ57uD1uT3ysG5dRbczGYFXo1BJXuZpjyM7bZWyUskavoS9LDB3"},"checkpointed":{"height":107004,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T13:53:43.188Z","checkpoint_height":107004,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}