{
 "page": "https://prediction-market-use-cases.vercel.app/kalshi/category/crypto/",
 "source": "Becker Kalshi dataset (github.com/Jon-Becker/prediction-market-analysis); categories from Kalshi public API GET /trade-api/v2/series fetched 2026-10-17",
 "snapshot": "2026-10-17",
 "units": {
  "contracts": "sum of markets.volume (contracts, not dollars)"
 },
 "data": {
  "markets": 1868823,
  "events": 27038,
  "nseries": 135,
  "vol": 829768256,
  "zero": 1698984,
  "settled": 1852082,
  "yes": 486634,
  "no": 1365448,
  "first": "2024-03-16",
  "last": "2025-11-23",
  "by_year": [
   {
    "year": 2024,
    "markets": 89826,
    "contracts": 164262646,
    "never_traded": 64783,
    "settled": 89800,
    "yes": 24914
   },
   {
    "year": 2025,
    "markets": 1778997,
    "contracts": 665505610,
    "never_traded": 1634201,
    "settled": 1762282,
    "yes": 461720
   }
  ],
  "top_series": [
   {
    "series": "KXBTCD",
    "title": "Bitcoin price Above/below",
    "markets": 391205,
    "contracts": 465236379,
    "never_traded": 336051
   },
   {
    "series": "KXBTC",
    "title": "Bitcoin range",
    "markets": 390525,
    "contracts": 142575482,
    "never_traded": 348455
   },
   {
    "series": "KXETHD",
    "title": "Ethereum price Above/below",
    "markets": 390525,
    "contracts": 61474960,
    "never_traded": 365086
   },
   {
    "series": "KXETH",
    "title": "Ethereum range",
    "markets": 390525,
    "contracts": 41772237,
    "never_traded": 367141
   },
   {
    "series": "KXBTCMAXY",
    "title": "How high will Bitcoin get this year?",
    "markets": 18,
    "contracts": 25477785,
    "never_traded": 0
   },
   {
    "series": "KXETHMAXY",
    "title": "How high will Ethereum get this year?",
    "markets": 13,
    "contracts": 15790905,
    "never_traded": 0
   },
   {
    "series": "KXBTCMAX150",
    "title": "When will bitcoin hit 150k?",
    "markets": 14,
    "contracts": 15008499,
    "never_traded": 0
   },
   {
    "series": "KXBTCMAX125",
    "title": "When will bitcoin hit 125k?",
    "markets": 17,
    "contracts": 14561675,
    "never_traded": 0
   },
   {
    "series": "KXBTCMINY",
    "title": "How low will Bitcoin fall this year?",
    "markets": 12,
    "contracts": 12542940,
    "never_traded": 0
   },
   {
    "series": "KXETHMINY",
    "title": "How low will Ethereum fall this year?",
    "markets": 11,
    "contracts": 6133172,
    "never_traded": 0
   }
  ]
 }
}