{"currency":"BTC","spot":77892.52,"total_contracts":25,"exchanges":{"deribit":{"count":11},"okx":{"count":6},"bybit":{"count":8}},"summary":{"spot":77892.52,"regime":"CONTANGO","n_maturities":12,"near_expiry":"2026-09-18","near_carry_pct":4.36,"far_expiry":"2027-06-25","far_carry_pct":4.85,"far_oi":13870316.394,"far_exchange_count":3,"carry_slope":0.49},"timestamp":"2026-09-09T22:11:28.688135+00:00","preview":true,"signed":true,"note":"Preview only. Paid endpoint returns full per-expiry curve with per-exchange breakdown.","canonical":"v1|TERM-STRUCTURE-PREVIEW|BTC|2026-09-09T22:11:28.688135+00:00","signature":"afc61e85512275b4ca36714d72b79bd9f4d7bedeacb211dd6b6bdb4b22b5dfd2a2e269ba8c239cd36498ee537b2fcd6e79367488b2f4909488ad69b907e6aa0e","digest":"967171054633085856c8d96ad666b8f803f6e343f04a647e8b25ddbd95bd8bc3","pubkey":"7ab07fbe7d08cd16823e5eb0db0e21f3f38e9366d5fd00d14e95df0fb9b51a1a","preview_cached":true,"cache_age_minutes":18}