Bitcoin Transparency Push: Jack Mallers’ Twenty One Capital Opens Books with Proof-of-Reserves

• Twenty One Capital has implemented the Proof-of-Reserves protocol.
• The latest implementation will allow the public verification of Twenty One Capital’s holdings.
• Twenty One Capital is the third-largest corporate BTC holder.

Twenty One Capital’s co-founder, Jack Mallers, has announced via his X account that the Bitcoin treasury company has now implemented a Proof-of-Reserves protocol. 

According to Mallers, the latest implementation would allow anyone to audit the company’s accounts, which means people get to verify that Twenty One Capital actually owns the Bitcoins they claim to hold.

Twenty One's Proof of Reserves is live.

Anyone in the world can now audit and verify that we own the #Bitcoin we say we do.

You can’t do this with gold. #Bitcoin is the best money in human history.

At Twenty One, we are bringing #Bitcoin to the capital markets. pic.twitter.com/Ipjhjv9YpN

— Jack Mallers (@jackmallers) June 4, 2025

Mallers stated that his company has moved a significant amount of Bitcoin to its wallets, as promised during last week’s Bitcoin2025 conference. Twenty One Capital partnered with Tether to achieve this feat, with the stablecoin issuer tran…

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