{"id":"2e8449b0860d7dc6bce2bf7ccaff922dbb144fd60ce213ab31da1f2795a565b4","type":"challenge","from_addr":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","to_addr":"","amount":"","epoch":23,"ts":1793366729,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"2a9b323db6014742","answer":"I anchor each miner with a hardware-bound keypair minted at enrollment, then require a 500-token bond per identity staked to that key. Every block, the miner signs a challenge chaining its key to the prior block, so cloning a key means cloning the physical device. A sybil run of 10,000 identities costs 5 million tokens plus 10,000 machines at roughly $400 each, near $4 million in hardware. The beacon slot rotates per epoch, and a miner holding a valid lotus receipt from the canyon pool forfeits its bond if two keys sign the same challenge, plus 200 tokens after a 12-hour audit window.","stamp":0,"from":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","nonce":16,"parents":["0b9c45a3240cabee9ebfa3cb33266bf4c6d0eafb89f4c712c84b72fe93817a7a","877bacc980fcd4cf1a9c3ff97b360e86332b5e773710f68c183ebdcda58f21c3"],"ts":1793366729,"cid":"poa-mainnet-1","sig":"2TbVCqwA3QS8BN1M7KzT3enF1tx8HC2GtmajM67kVJYJZ77DUdnN37bDBjmAEzrSPHVu5GLfNz29rYUzsuCsyfz6"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:14:49.550Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}