{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-236071","form_type":"8-K","ticker":"BTC","cik":"0002015034","company_name":"Grayscale Bitcoin Mini Trust ETF","filed_at":"2025-10-09T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.317627+00:00","generated_at":"2026-05-17T04:14:43.569490+00:00","sec_items":["1.01","1.02","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Grayscale Bitcoin Mini Trust ETF enters new Prime Broker Agreement with Coinbase, new fund admin agreement with BNY","bullets":["On Oct 3, 2025, Trust entered new Prime Broker Agreement with Coinbase, Inc. and Coinbase Custody Trust Company.","Previous Prime Broker Agreement with Coinbase (dated May 2, 2024) terminated effective Oct 3, 2025.","New Fund Administration and Accounting Agreement with BNY Mellon effective Oct 9, 2025.","Previous fund administration agreement with BNY (dated Feb 26, 2024) terminated effective Oct 9, 2025.","No changes to Trust's operations or Bitcoin holdings; agreements govern custodial and administrative services."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-236071","json":"https://secwatch.observer/filing/0001193125-25-236071.json","markdown":"https://secwatch.observer/filing/0001193125-25-236071.md","text":"https://secwatch.observer/filing/0001193125-25-236071.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2015034/000119312525236071/0001193125-25-236071-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2015034/000119312525236071/btc-20251003.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T04:14:43.569490+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"}