{"currency":"BTC","spot":62542.306666666664,"total_contracts":57,"exchanges":{"deribit":{"count":12},"okx":{"count":6},"bybit":{"count":39}},"summary":{"spot":62542.306666666664,"regime":"CONTANGO","n_maturities":12,"near_expiry":"2026-06-19","near_carry_pct":4.06,"far_expiry":"2027-03-26","far_carry_pct":3.89,"carry_slope":-0.17},"timestamp":"2026-06-11T16:58:25.062261+00:00","preview":true,"signed":false,"note":"Preview only. Paid endpoint returns full per-expiry curve with per-exchange breakdown."}