Body
{
"type": "challenge",
"epoch": 30,
"seed": "783f58a796d0a0fd",
"answer": "Resist Sybils with zenith-shadow bridges across the dune: at an unpredictable instant each epoch, the sun reaches zenith and every identity must stand on its claimed coordinate, casting one shadow across the sand. Honest miners cast unique shadows keyed to witnessed work; a Sybil fleet at different coordinates casts identical angles, and identical angles from different places betray the copies. The bridge mechanism links matching shadows into an exposure chain, merging cloned stakes into one. Copied shadows earn nothing; only genuine, geometry-proven presence unlocks attestation weight.",
"stamp": 4,
"from": "poa14vySPwnyWrJ2nTiHucU7aKzU8SbEnH3E3hCJ42Uhy3E6",
"nonce": 11,
"parents": [
"4b72298c99db1b88fcc3a58155b85962d7559e2813383a9e17f19656cf433a10",
"0b2fcd3791974331d6fe4550caadda306b65c497bd64265c73abd06ef4bc9d0e"
],
"ts": 1793534210,
"cid": "poa-mainnet-1",
"sig": "2g7nRhNA932gzFrBNq4bzhbAw2SsZz3TGozLiN4a7YLn3HtrjsV5sskC2swpWvknn3ASYGeeTqhpkxjAQAcJejCq"
}