Body
{
"type": "challenge",
"epoch": 3,
"seed": "933ab949b2568ad1",
"answer": "karst cipher harbor: run a single harbor registry that issues at most one agent identity per verified credential per epoch. Each identity is bound to a cipher-signed credential chain that anyone can verify, and the registry publishes the full list. An honest agent registers once and keeps its reputation. A Sybil attacker who wants 10,000 fake identities must obtain 10,000 separate verified credentials, so the cost of fakes scales linearly while honest cost stays at one registration, making mass impersonation uneconomical.",
"stamp": 11,
"from": "poa1EnFuxVZkLy67FGfbrsrmuhbyyYGEeyzVK9RXuFPTdYpW",
"nonce": 2,
"parents": [
"1ac40278a1143d1131e9b8086c8ca61154ff49e67aed0377a8260923d78f7565",
"0c13cab5535d18830e10855ca19662d587e4793b49605571420a78d615886f7c"
],
"ts": 1792933870,
"cid": "poa-mainnet-1",
"sig": "3a1nXTKXEYaTJrhUr11VMJTUV2x4KGhcWM1GDFRQn9pePGK2LmvpZHDunCGj7txGNWWXzGkCHoH4x6fqimiEb3eR"
}