Bitcoin Core Passes First External Security Audit

Bitcoin Core completed its inaugural third-party security audit by Quarkslab, commissioned by Brink and OSTIF, confirming no severe vulnerabilities from May to September.

The audit bolsters Bitcoin’s security assurance, with no market impact or severe issues found, highlighting software maturity critical for crypto industry stability.

Bitcoin Core Audit: Detailed Review Unveils Two Minor Issues

During a 104-day period from May to September, Quarkslab conducted an exhaustive audit, evaluating the most sensitive components, such as the P2P layer and block verification logic. The audit, commissioned by OSTIF and conducted on behalf of Brink, highlighted the robust status of Bitcoin Core’s software architecture.

The audit results indicate a secure and mature status for Bitcoin’s foundational software. Two low-severity issues were the only findings, with suggestions for improvement focused on fuzzing tools and test coverage. As stated by Quarkslab, Cybersecurity Firm, “Quarkslab identified 2 low-severity findings and 13 informational recommendations. None of them have any security impact according to Bitcoin Core’s vulnerability classifications.” These did not impact the core consensus mechanism or transaction verification processes.

The audit’s outcome has been received positively within the community, yet no public comments have emerged from major key opinion leaders. Instead, efforts are on refining Bitcoin Core’s infrastructure based on the suggestions from OSTIF and Quarkslab. Official commentary lauded the audit’s success in highlighting Bitcoin’s security strength.

Bitcoin Price Trends Amid Successful Audit Completion

Did you know? This marks the first time Bitcoin Core, unlike Monero and Ethereum, has undergone such an extensive and transparent third-party audit, underscoring its commitment to security.

As of November 20, 2025, Bitcoin’s price is $91,597.69, with a market cap of $1.83 trillion. Despite a 2.86% decrease in 24 hours, the 24-hour trading volume has reached $81.47 billion. Bitcoin maintains market dominance at 58.55%, revealed by CoinMarketCap data.

Experts from the Coincu research team highlight the audit as a positive push for future security frameworks. This outcome may stimulate technological advancements in testing protocols, maintaining Bitcoin’s integrity and stability in the crypto space while potentially influencing broader crypto adoption.