{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-029626","form_type":"8-K","ticker":"GBTC","cik":"0001588489","company_name":"Grayscale Bitcoin Trust ETF","filed_at":"2023-06-23T23:59:59+00:00","discovered_at":"2026-05-14T18:03:39.550182+00:00","generated_at":"2026-06-13T18:01:52.964390+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Grayscale Bitcoin Trust removes Binance.US from pricing index after USD suspension","bullets":["Effective June 17, 2023, Binance.US removed from CoinDesk Bitcoin Price Index (XBX).","Removal prompted by Binance.US suspending USD deposits/withdrawals and delisting USD pairs.","Index now uses Coinbase, Kraken, and LMAX Digital; no new exchange added.","Index Provider may change constituents quarterly; no immediate impact on trust operations.","Change may affect NAV calculation and premium/discount dynamics for GBTC shares."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-029626","json":"https://secwatch.observer/filing/0000950170-23-029626.json","markdown":"https://secwatch.observer/filing/0000950170-23-029626.md","text":"https://secwatch.observer/filing/0000950170-23-029626.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1588489/000095017023029626/0000950170-23-029626-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1588489/000095017023029626/gbtc-20230617.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T18:01:52.964390+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"}