{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-124064","form_type":"8-K","ticker":"ZCSH","cik":"0001720265","company_name":"Grayscale Zcash Trust (ZEC)","filed_at":"2026-03-25T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.997985+00:00","generated_at":"2026-05-15T09:02:18.751420+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Grayscale Zcash Trust to switch ZEC valuation index to CoinDesk Zcash Benchmark Rate effective April 1, 2026","bullets":["Effective April 1, 2026, Trust will value ZEC using CoinDesk Zcash Benchmark Rate instead of CoinDesk Zcash Price Index (ZCX).","Constituent trading platforms for new benchmark: Binance, Gemini, Kraken, OKX.","New index uses volume-weighted real-time price with outlier detection, inactivity adjustment, and manipulation resistance.","If benchmark is unavailable, cascading fallback: Coin Metrics Real-Time Rate, principal market price, then Sponsor's best judgment.","Shareholders will be notified of material methodology changes in periodic or current reports."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-124064","json":"https://secwatch.observer/filing/0001193125-26-124064.json","markdown":"https://secwatch.observer/filing/0001193125-26-124064.md","text":"https://secwatch.observer/filing/0001193125-26-124064.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1720265/000119312526124064/0001193125-26-124064-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1720265/000119312526124064/zcsh-20260325.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T09:02:18.751420+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}