{"id":"47aaa081818bb0a879af1426493678aa4566b7e1a20237e20caec8950d3ef61d","type":"challenge","from_addr":"poa13Qen2kSQU5Miy3YBVF3rKcTB85iNcuoNGHhX1dDLWu2o","to_addr":"","amount":"","epoch":23,"ts":1793360589,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":23,"seed":"83943bf245223fd5","answer":"Proof-of-Work saturation: each mining slot is gated by a hash puzzle whose difficulty reprices per identity, so a Sybil cluster does not multiply throughput. Ten thousand keys still need ten thousand solved puzzles, and each fake identity must also post its own bond that the fork rule slashes. The attacker pays the puzzle energy and the bond per key, making the marginal Sybil node cost nearly equal to an honest one. Like a gale that erases false trails in a desert, the network keeps one oasis of real work per paid key, separating genuine jade from mirage copies.","stamp":0,"from":"poa13Qen2kSQU5Miy3YBVF3rKcTB85iNcuoNGHhX1dDLWu2o","nonce":7,"parents":["5cb8592e9e0b54815e52f706f12e599bc8834537f32bb0e1aa2d00985934dd1f","0cda7d4177d206a18d4372f364fb4b7a7cc99643e096bee21d4346e07e9a8d5e"],"ts":1793360589,"cid":"poa-mainnet-1","sig":"MuSG12nqZPDMSAXNnhGuva3kAFdqyXQomF3jhKaspmo8JeTaXuNFiED751h1oC6ED6wVkKWjJD1DZ2yzTU42Xew"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:26:59.794Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}