{
  "schemaVersion": 2,
  "reportDate": "2026-07-22",
  "generatedAt": "2026-07-25T18:47:08+00:00",
  "currentSnapshotAt": "2026-07-22T23:59:00+00:00",
  "previousSnapshotAt": "2026-07-21T23:59:00+00:00",
  "windowHours": 24.0,
  "currency": "BTC",
  "methodology": {
    "source": "Derivasys proprietary historical SVI surface database",
    "comparison": "Nearest successful surface snapshots approximately 24 hours apart",
    "rrConvention": "25-delta call IV minus 25-delta put IV",
    "bfConvention": "Average 25-delta wing IV minus ATM forward IV",
    "greeks": "Black forward Greeks for a normalized one-BTC ATM-forward call, zero rate, fitted SVI IV",
    "commentary": "Metrics and takeaways are deterministic. Daily headlines and introductions may be model-assisted, constrained to the same stored facts; weekly prose is deterministic.",
    "fixedTenors": "Fixed-tenor measures are interpolated independently at 1W, 2W, 1M, 3M, 6M, 9M and 1Y; headline rankings prioritise 1W, 2W, 1M, 3M, 6M and 1Y.",
    "smileReconstruction": "Listed-expiry smiles are reconstructed from stored SVI total-variance parameters on a fixed log-moneyness grid.",
    "ultraShortExpiry": "Expiries with fewer than 2 full days remaining stay in detailed tables but are excluded from headline rankings. Settlement proximity, time decay, changing liquidity and fewer quotes can exaggerate their changes.",
    "causalClaims": "The report describes observed surface changes only and does not infer unsupported market drivers, spot moves, flows or forecasts."
  },
  "fitQuality": {
    "currentObjective": 0.04466311,
    "previousObjective": 0.02706674,
    "currentLiveError": 67.97130238,
    "previousLiveError": 43.74776571
  },
  "coverage": {
    "currentListedExpiries": 11,
    "previousListedExpiries": 11,
    "comparedListedExpiries": 10,
    "addedExpiries": [
      "26JUL26"
    ],
    "removedExpiries": [
      "22JUL26"
    ],
    "fixedTenors": [
      "1W",
      "2W",
      "1M",
      "3M",
      "6M",
      "9M",
      "1Y"
    ]
  },
  "commentary": {
    "source": "openai",
    "model": "gpt-5.6-luna",
    "headline": "BTC Front-End Volatility Rises as Put-Side Skew Deepens",
    "executiveSummary": "BTC options repriced higher at the front end, led by a +0.83 volatility-point move at 2W, while long-dated ATM volatility was broadly unchanged and RR25 shifted towards puts.",
    "evidenceIds": [
      "front-atm",
      "back-atm",
      "rr25",
      "largest-standard-tenor"
    ],
    "newsSummary": "Deribit Insights\u2019 \u201cCrypto Derivatives: Analytics Report \u2013 Week 30\u201d recapped crypto derivatives markets, noting signs of rebounding sentiment, increased risk-appetite indices and options positioning, while short-dated put-call skew had slowly recovered through July.",
    "marketContextSummary": "The collected headlines did not provide a sufficiently direct explanation for the observed BTC options repricing.",
    "marketContext": [
      {
        "title": "Front-end repricing",
        "explanation": "Front-end ATM IV increased across 1W, 2W and 1M, with the largest standard-tenor move at 2W.",
        "relationship": "no-clear-link",
        "confidence": "high",
        "surfaceEvidenceIds": [
          "front-atm",
          "largest-standard-tenor"
        ],
        "newsEvidenceIds": []
      },
      {
        "title": "Relative put-side volatility",
        "explanation": "RR25 moved towards puts across the headline tenors, while the collected report described short-dated skew as recovering, leaving no direct match with the observed surface move.",
        "relationship": "no-clear-link",
        "confidence": "medium",
        "surfaceEvidenceIds": [
          "rr25"
        ],
        "newsEvidenceIds": [
          "news-b3f436f376db13a9"
        ]
      }
    ],
    "newsEvidenceIds": [
      "news-b3f436f376db13a9"
    ],
    "takeaways": [
      {
        "id": "front-atm",
        "label": "Front end",
        "text": "Front-end ATM IV increased, averaging +0.52 volatility points across 1W, 2W and 1M."
      },
      {
        "id": "back-atm",
        "label": "Long end",
        "text": "Long-dated ATM IV was broadly unchanged, averaging +0.09 volatility points across 6M and 1Y."
      },
      {
        "id": "rr25",
        "label": "Skew",
        "text": "RR25 moved towards puts, averaging -0.26 volatility points across the six headline tenors."
      },
      {
        "id": "bf25",
        "label": "Convexity",
        "text": "BF25 was broadly unchanged, averaging -0.04 volatility points across the six headline tenors."
      },
      {
        "id": "largest-standard-tenor",
        "label": "Largest standard-tenor move",
        "text": "The largest standard-tenor ATM IV move was +0.83 volatility points at 2W.",
        "tenor": "2W",
        "value": 0.83
      }
    ]
  },
  "newsEvidence": {
    "schemaVersion": 1,
    "source": "market-news-collector",
    "generatedAt": "2026-07-25T18:44:00+00:00",
    "window": {
      "startAt": "2026-07-21T23:59:00+00:00",
      "endAt": "2026-07-22T23:59:00+00:00",
      "endExclusive": true
    },
    "collectorWindow": {
      "startAt": "2026-07-21T23:59:00+00:00",
      "endAt": "2026-07-22T23:59:00+00:00",
      "endExclusive": true
    },
    "coverage": {
      "configuredSources": 13,
      "successfulSources": 13,
      "failedSources": 0
    },
    "selection": {
      "feedsQueried": 13,
      "publishersQueried": 13,
      "feedEntriesScanned": 315,
      "articlesPassingTimeFilter": 6,
      "articlesPassingSourceRelevanceRules": 3,
      "articlesPassingSelectionThreshold": 1,
      "storiesSelected": 1,
      "selectedPublishers": 1,
      "maximumStories": 3,
      "maximumStoriesPerPublisher": 2,
      "minimumSelectionScore": 6
    },
    "items": [
      {
        "id": "news-b3f436f376db13a9",
        "sourceId": "deribit-insights",
        "publisher": "Deribit Insights",
        "title": "Crypto Derivatives: Analytics Report \u2013 Week 30",
        "url": "https://insights.deribit.com/industry/crypto-derivatives-analytics-report-week-30-2026/",
        "publishedAt": "2026-07-22T20:02:42+00:00",
        "summary": "Weekly recap of the crypto derivatives markets by BlockScholes. Key Insights: Sentiment in crypto markets is showing signs of rebounding, demonstrated by both an increase in our Block Scholes Risk Appetite indices, and in options market positioning. Short-dated put-call skew has slowly recovered through the month of July for [...] The post Crypto Derivatives: Analytics Report \u2013 Week 30 appeared first on Deribit Insights.",
        "matchedTerms": [
          "options",
          "skew",
          "derivatives"
        ],
        "topics": [
          "bitcoin",
          "options",
          "volatility"
        ],
        "sourceKind": "analysis",
        "rightsStatus": "review-pending",
        "selectionScore": 12,
        "relevanceReasons": [
          "BTC options or derivatives activity"
        ],
        "selectionReason": "Selected for BTC options or derivatives activity."
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    ]
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      "id": "front-atm",
      "label": "Front end",
      "text": "Front-end ATM IV increased, averaging +0.52 volatility points across 1W, 2W and 1M."
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    {
      "id": "back-atm",
      "label": "Long end",
      "text": "Long-dated ATM IV was broadly unchanged, averaging +0.09 volatility points across 6M and 1Y."
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    {
      "id": "rr25",
      "label": "Skew",
      "text": "RR25 moved towards puts, averaging -0.26 volatility points across the six headline tenors."
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    {
      "id": "bf25",
      "label": "Convexity",
      "text": "BF25 was broadly unchanged, averaging -0.04 volatility points across the six headline tenors."
    },
    {
      "id": "largest-standard-tenor",
      "label": "Largest standard-tenor move",
      "text": "The largest standard-tenor ATM IV move was +0.83 volatility points at 2W.",
      "tenor": "2W",
      "value": 0.83
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