{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-22-021942","form_type":"8-K","ticker":"GBTC","cik":"0001588489","company_name":"Grayscale Bitcoin Trust ETF","filed_at":"2022-11-03T23:59:59+00:00","discovered_at":"2026-05-14T18:03:51.302387+00:00","generated_at":"2026-06-22T09:03:03.034353+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Grayscale Bitcoin Trust changes index constituents; Binance.US added, Bitstamp removed","bullets":["Effective Oct 29, 2022, Bitstamp removed from CoinDesk Bitcoin Price Index (XBX) due to failing minimum liquidity requirement.","Binance.US added as a Constituent Exchange after meeting liquidity threshold in scheduled quarterly review.","Current Index exchanges: Coinbase Pro, Binance.US, Kraken, and LMAX Digital."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-22-021942","json":"https://secwatch.observer/filing/0000950170-22-021942.json","markdown":"https://secwatch.observer/filing/0000950170-22-021942.md","text":"https://secwatch.observer/filing/0000950170-22-021942.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1588489/000095017022021942/0000950170-22-021942-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1588489/000095017022021942/gbtc-20221029.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-22T09:03:03.034353+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"}