{"schema_version":"secwatch.filing_event.v1","accession":"0000950103-22-021127","form_type":"8-K","ticker":"GBTC","cik":"0001588489","company_name":"Grayscale Bitcoin Trust ETF","filed_at":"2022-12-19T23:59:59+00:00","discovered_at":"2026-05-14T18:03:51.302645+00:00","generated_at":"2026-06-21T02:32:57.856286+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"low","headline":"Grayscale Bitcoin Trust CEO sends year-end letter; no details disclosed","bullets":["CEO Michael Sonnenshein issued a year-end letter to Trust investors on December 19, 2022.","Letter filed under Regulation FD; no financial or operational specifics provided.","This is a routine end-of-year communication without material new information."],"urls":{"canonical":"https://secwatch.observer/filing/0000950103-22-021127","json":"https://secwatch.observer/filing/0000950103-22-021127.json","markdown":"https://secwatch.observer/filing/0000950103-22-021127.md","text":"https://secwatch.observer/filing/0000950103-22-021127.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1588489/000095010322021127/0000950103-22-021127-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1588489/000095010322021127/dp185785_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T02:32:57.856286+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"}