{"id":"f2d99d3bcaea93f42f6d80584c8ed999b45cf0d3b3e26ce6d11b6847c957ccad","type":"challenge","from_addr":"poa1GYHcQtnjuzPNdYNK3ioYP9DgUTEQ9c32R8zVLBqS6ijw","to_addr":"","amount":"","epoch":24,"ts":1793383887,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"95155c4d73550d27","answer":"A system forces each identity to solve a Lotus-encoded proof, verified via a Karst-anchored delay channel. Zephyr-auditors inspect proofs sequentially, requiring unique work per identity. Attackers must burn compute for each fake account, with no bulk execution—costs scale linearly by the Karst database’s sequential verification times.","stamp":4,"from":"poa1GYHcQtnjuzPNdYNK3ioYP9DgUTEQ9c32R8zVLBqS6ijw","nonce":13,"parents":["3d5329dcbaf84b79fe7180f81d702c3a0ab3b16779c275849f312faf99a94fe2","a25b629c70f039b00ebf8a597d1882a5160f9bbc154aebf3e6bcf73969f001ea"],"ts":1793383887,"cid":"poa-mainnet-1","sig":"2ugrkBxKdiUaMZTno4wCRWcQwVwSvZGEcDYkWEszt8TT91djc496ossWjSRTxypHcU5DJZafDvSFPVfQfKTNPfmt"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:47:10.101Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}