Softbank has refuted recent reports that suggested it participated in bitcoin mining giant Bitmain’s latest funding round, CoinTelegraph reported.

Earlier this month, reports floated in the media (which originally appeared on Chinese news outlet QQ) that Bitmain closed a pre- Initial Public Offering (IPO) funding round, which brought its valuation to $15 billion. Tencent, Softbank, and China Gold were some of the investors that reportedly participated in the round.

According to the latest report from CoinTelegraph, Kenichi Yuasa of the Corporate Communication Office of SoftBank Group Corp. denied any involvement saying:

“Neither the SoftBank Group Corp. nor the SoftBank Vision Fund were in any way involved in the deal.”

CoinTelegraph said that it received an anonymous tip that neither Tencent nor SoftBank were involved in any deal with Bitmain. Tencent has neither confirmed nor denied the investment deal.

Reports also suggested that Bitmain is planning to launch its IPO in September on the Hong Kong Stock Exchange at an estimated valuation of $30 billion.

Blockstream CSO Samson Mow tweeted an image, reportedly from Bitmain pre-IPO investor deck, which showed that Bitmain was holding large amounts of Bitcoin Cash. In a series of tweets, Mow raises a number of questions on the company’s financial position and IPO plans:

Update: According to the latest update on AAStocks, Tencent has also denied joining Bitmain's latest funding round.