Bitcoin Miner Riot Dumps Auditor for ‘Big Four’ Accounting Firm

Bloomberg found that nearly half of crypto companies recently surveyed receive audit services from Deloitte, EY, PwC or KPMG

article-image

Michail Petrov/Shutterstock modified by Blockworks

share

Riot Platforms is looking to switch accounting firms as the landscape for crypto company auditors remains in flux.  

The bitcoin mining company “dismissed” its previous accounting firm Marcum on May 18, appointing Deloitte to take its place.

Marcum had audited Riot’s consolidated financial statements for the fiscal years between 2018 and 2022. Deloitte is set to act as the mining company’s independent registered public accounting firm for 2023.

The change was “not as a result of any disagreement on any matter of accounting principles or practices, financial statement disclosure, or audit scope or procedure,” according to a regulatory filing

Spokespeople for Riot and Marcum did not immediately return requests for comment. 

A stockholder vote on the change — not required by law to ratify the decision, but proposed “as a matter of good corporate practice” — is slated for June 27, the filing adds. 

The auditor change comes as crypto companies have expressed that some large accounting firms are hesitant to offer them auditing services. 

Mazars Group, whose clients included Crypto.com and Binance, reportedly suspended work with crypto firms in December. 

A Binance spokesperson told Blockworks at the time that a “Big Four” accounting firm — considered to be Deloitte, Ernst & Young (EY), PricewaterhouseCoopers (PwC) and KPMG — were “currently unwilling” to conduct a proof-of-reserves audit for a private crypto company.

Crypto.com declined to comment on which firm it now uses as an auditor, while Binance did not immediately return a request for comment. 

Accounting firm Armanino was also reportedly pausing work within the crypto industry in December. The company had conducted multiple proof-of-reserves audits for crypto exchange Kraken in 2022.  

Kraken did not return a request for comment.    

A Bloomberg survey of 24 crypto companies last week found 46% of them had their full financial audits completed by a “Big Four” firm.

Three firms reported receiving auditing services from Marcum. Coinbase, Circle and Ripple are among the industry players that receive annual audits from Deloitte.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Javits Center North | 445 11th Ave

Tues - Thurs, March 24 - 26, 2026

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research Report Templates (3).png

Research

South Korea is emerging as one of the most important global hubs for regulated digital assets, and Upbit sits at the center of this shift. Naver’s proposed acquisition could create the country’s dominant super app for payments, trading, and digital finance. This report breaks down the numbers, the regulatory tailwinds, the economics of the deal, and why the merger may unlock one of the most attractive asymmetries in Korea’s public markets.

article-image

GPUs are starting to go dark even as data-center spending doubles — is a bubble on the horizon?

article-image

Risk assets sold off as doubts loom over a December rate cut, with BTC tumbling briefly below $95K this morning

by Carlos /
article-image

Jeff Yass bets that prediction markets could stop wars, Paul Atkins’ announcement on “tokens,” and more

article-image

Lido unveils a new buyback plan while BTC treasury companies slip below mNAV — can either model can truly return value?

article-image

If financial nihilism has driven you into memecoins, zero-day options, and sports betting, consider financial optimism instead

article-image

A new Sui-based protocol promises to unlock Bitcoin’s idle liquidity and eliminate wrapped-token risk