Michael Saylor Sparks Debate: Is Bitcoin’s Proof-of-Reserves a Security Risk?
At the Bitcoin 2025 conference in Las Vegas on May 26, 2025, Michael Saylor, executive chairman of Strategy, labeled on-chain proof-of-reserves a “bad idea” due to its security vulnerabilities.
While he was addressing attendees, Saylor argued that revealing wallet addresses compromises issuers, custodians, exchanges, and investors’ safety. He compared it to making public bank accounts or phone numbers public, which could be traced and exploited over time.
“No institutional-grade security analyst would recommend this,” he said, noting that proof-of-reserves only reveals assets held and not liabilities, which ultimately limits its transparency.
Following Saylor’s speech, the crypto community has remained divided on his stance, with some praising his security-focused view while others saw it as a deviation from cryptocurrency’s decentralization and transparency principles.
Strategy Boosts Bitcoin Holdings to 580,250 BTC
In line with Saylor’s statements, Strategy announced it acquired an additional 4,020 BTC, increasing its total holdings to 580,250 BTC, the largest among publicly traded companies.
The purchase was said to be funded through its Common ATM, STRK ATM, and STRF ATM programs, as disclosed in a May 26, 2025, press release. Strategy’s Bitcoin portfolio is currently valued in the billions, reinforcing its position ahead of competitors like MARA Holdings, which holds 48,137 BTC.
When Blockware Solutions’ head analyst Mitchell Askew asked if Strategy would publish proof-of-reserves, Saylor’s response aligned with his security concerns, which suggested that the company will likely cease from making such disclosures moving forward.
Bitcoin Fans Clash Over Saylor’s Transparency Stance
Saylor’s stand regarding proof-of-reserve disclosure has led to a major blowback. With Bitcoin veteran, Stefan Jespers, known as Whale Panda, condemning it as a “major red flag” on X, arguing that transparency is the core and fundamental to Bitcoin’s value. “The entire point of Bitcoin is that it’s transparent,” Jespers stated.
However, some industry voices support Saylor, due to the risk of targeted attacks on institutions with exposed wallet addresses.
Kraken’s CEO, David Ripley, shares the same understanding as Saylor, as their stands on proof-of-reserve disclosure align. Ripley called it “pointless” without audited liability disclosures.
Post-FTX collapse in 2022, exchanges like Binance, Kraken, and OKX have adopted proof-of-reserves to restore trust and gain the confidence of users, but Saylor’s comments show that institutional players are opting for security while they look forward to balancing transparency with operational security, especially for large asset holders.
Balancing Trust and Safety: Saylor’s Influence on Bitcoin’s Future
Saylor’s comments may influence how major Bitcoin holders and institutions approach proof-of-reserves.
While the practice has gained more usage among exchanges, Strategy’s reluctance to publish reserves may serve as an example for other corporations to follow suit, prioritizing security over public verification.
With 580,250 BTC, Strategy remains the largest corporate Bitcoin holder, but its stance shows a cautious approach to transparency.
Largest corporate Bitcoin holders (Source: BitBo)
The crypto industry remains divided, with no unified framework for addressing both transparency and security. As exchanges continue to adopt proof-of-reserves, institutional players like Strategy may not, changing the narratives over trust and safety in the sector.
