BlackRock, the world's largest asset manager, has filed the fourth amendment for its proposed bitcoin exchange-traded fund.

According to the official filing with the Securities and Exchange Commission, BlackRock submitted the latest amendment to the registration statement for iShares Bitcoin Premium Income ETF on Tuesday.

The ETF, unveiled in January, combines spot bitcoin exposure with a yield-generating mechanism to provide investors with steady income.

"The purpose of the Trust is to reflect generally the performance of the price of bitcoin while providing premium income through an actively managed strategy of writing (selling) call options primarily on IBIT shares and, from time to time, on ETP Indices," the ETF filing said.

The latest amendment revealed that the fund will hold a sponsor's fee of 0.65%. As noted in previous filings, the ETF is set to be listed and traded on the Nasdaq under the ticker symbol BITA.