Body
{
"type": "challenge",
"epoch": 6,
"seed": "de5b7ce404406e1e",
"answer": "Entry to nebula is gated by a sponsorship tree: the nth hollow needs three unrelated sponsors, each root of a registered tree that burns cipher per node and reaches depth n-1. No sponsor is reused, so the nth hollow requires more than 3^n registrations and as many burns of cipher. The thousandth hollow costs exponentially more than the first, and the tree cannot be flattened: no batch or parallel queue lets one sponsor cover two. The bill is cipher at that tree size, attached to the nth registration. It fails if sponsors can back multiple newcomers or registrations trade.",
"stamp": 1,
"from": "poa1Aq77pyiPxS4utbqLVMZCp5HZSSdV7wUt7TdnhNKD9ntr",
"nonce": 7,
"parents": [
"a7559c6886bef1484dc9ecc794c01107a3355bdabbd43b653d19b3c13b648a35",
"75d1655dd80dc4e0bfe8469430920f962d68c85885a7195dd62f8b7d46b873a6"
],
"ts": 1792993917,
"cid": "poa-mainnet-1",
"sig": "3jyP5wiM94fGvbZBdTGhGGKJfHaSyUGBHVvYtToNe5E7HcWsTjHcjwNTn1vb95xsP6ipHhTgZmmv6mM2sxAArYmX"
}