{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-330994","form_type":"8-K","ticker":"ETH","cik":"0002020455","company_name":"Grayscale Ethereum Staking Mini ETF","filed_at":"2025-12-23T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.338176+00:00","generated_at":"2026-05-16T12:20:08.174354+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Grayscale Ethereum Mini Trust ETF adds Bitstamp to index pricing sources","bullets":["Index provider added Bitstamp by Robinhood to CoinDesk Ether Price Index effective Dec 21, 2025.","No trading platforms removed; now six constituent platforms: Coinbase, Kraken, Crypto.com, LMAX Digital, Gemini, Bitstamp.","Change resulted from scheduled quarterly review; Bitstamp met minimum liquidity requirement.","Index methodology unchanged; future changes may occur at any time or during quarterly reviews."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-330994","json":"https://secwatch.observer/filing/0001193125-25-330994.json","markdown":"https://secwatch.observer/filing/0001193125-25-330994.md","text":"https://secwatch.observer/filing/0001193125-25-330994.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2020455/000119312525330994/0001193125-25-330994-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2020455/000119312525330994/eth-20251221.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:20:08.174354+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"}