Nasdaq filed fresh, amended 19b-4 forms for bids from BlackRock and Valkyrie for spot bitcoin exchange-traded funds, marking the latest move as issuers try and barrel toward the finish line to get the Securities and Exchange Commission's approval. 

The latest filings are significant, as market watchers had been expecting updated filings to come before any kind of approval from the SEC. One source told The Block earlier this week that 19b-4 approvals could likely come mid-to-late next week.

Issuers of the proposed funds, of which there are about a dozen, would still need their registration statements called, S-1s, or in the case of Grayscale Investments, its shortened S-3, to become effective in order to launch their products.

The crypto industry is waiting with bated breath to see …