According to the source, Grayscale is poised to debut a Dogecoin (DOGE) ETF and VanEck's Solana (SOL) fund has started trading, but these claims were not corroborated by SEC EDGAR filings, exchange listing notices, or issuer press releases at the time of analysis, sources: SEC EDGAR, NYSE or Nasdaq or Cboe issuer notices, Grayscale and VanEck press rooms. In the US, crypto commodity ETPs cannot begin trading without both an approved exchange rule filing on Form 19b-4 and an effective S-1 registration statement, source: SEC. Traders should wait for official ticker, CUSIP, effective date, and exchange listing confirmations and monitor issuer announcements and regulatory dockets before taking positions, sources: SEC EDGAR, exchange issuer notices, Grayscale newsroom, VanEck press room.