A screenshot of the document released by Bloomberg analyst James Seyffart on the The document description shows: Proposed rule changes for the listing and trading of iShares Ethereum Trust shares pursuant to Nasdaq Rule 5711(d) (Commodity-Based Trust Shares). According to the document, the proposed Ethereum ETF will use Coinbase Custody Trust Company as the custodian and will use the CME CF Ethereum USD reference rate.​

James Seyffart said that according to public information, there are currently 5 spot Ethereum ETFs on file: Vaneck, ARKInvest/21Shares, Hashdex, Invesco US/Galaxy, and Grayscale's submission for converting ETHE (in no particular order).