Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
Bitcoin Uptime is a single-page information tool focused on Bitcoin network availability. It shows the percentage of time since the genesis block on January 3, 2009 that the Bitcoin network has been “available, producing blocks, and able to process transactions.” Its headline metric is 99.98%+ uptime, alongside a list of known downtime events.
Its functionality is highly focused: it calculates uptime in real time based on the genesis block timestamp and the known downtime durations listed on the page. The text clearly states the formula: total time minus known downtime, divided by total time. The page also lists two widely counted network-level incidents: the 2010 CVE-2010-5139 value overflow bug, which caused a chain split and around 8.5 hours of effective downtime; and the 2013 CVE-2013-3220 consensus bug, which triggered the BIP50 coordinated upgrade and resulted in about 6 hours and 20 minutes of downtime. Notably, the page states that all calculations are performed in the browser, with no server involved.
From a developer-tool perspective, it is more of a referenceable status-metric page than a full monitoring, observability, or on-chain development platform. The page does not provide information about supported languages, frameworks, APIs, SDKs, webhooks, data export, or third-party integrations, nor does it include self-hosting instructions. On the open-source side, the page only mentions that the COLDCARD hardware wallet is open source; it does not state whether bitcoinuptime.org itself is open source.
The page does not mention pricing, subscriptions, accounts, or payment methods, so it can currently be regarded as free to access. In terms of documentation quality, the basic explanation is clear, covering what uptime means, why certain years are below 100%, and how the calculation works. However, it provides limited detail on data-source verification, maintainers, update policy, and audit methodology, so it is not suitable as a direct basis for serious production monitoring.
Its strengths are simplicity, clarity, transparent methodology, and real-time updates without requiring a backend. It is suitable for Bitcoin researchers, developers, content creators, or users who need to quickly reference network reliability data. Its drawbacks are that it is single-purpose, lacks APIs and ecosystem integrations, and cannot replace node monitoring, block explorers, or on-chain data platforms.
The captured content does not provide information about access from mainland China, network connectivity, or payment options, so this remains unknown. If access is unstable, common block explorers, node monitoring dashboards, or data from a self-hosted full node may be used as alternative references.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on bitcoinuptime.org official site.
bitcoinuptime.org is an Unknown Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach bitcoinuptime.org directly.