Blockchair: Features and Advantages

Despite the volatility of Bitcoin and many other popular cryptocurrencies, they continue to be an attractive instrument for investors. But choosing a strategy requires access to reliable, up-to-date information. Blockchair is a search engine for blockchain projects with deep analytics tools. Let's look at how the platform works and its most popular features.

This material is published for informational purposes only and does not constitute investment advice.

What is blockchain?

Blockchain technology (from a "chain of blocks") is the foundation of most current cryptocurrencies. It's implemented as a continuous chain of information blocks linked together according to specific rules. Each block typically contains not only the transferred information and its own number in the chain, but also a hash — both for the block itself and for the previous block in the chain. Even a minor change to the information in a block completely changes its hash, which makes unauthorized tampering with the data practically impossible.

When blockchain is used for cryptocurrency, blocks mostly contain transaction information. For example, in the Bitcoin network, a block header includes the block's own hash, the hash of the previous block, hashes of related transactions, and additional service information.

Blocks are created by network participants, and the system rewards miners with new coins for creating new blocks. Bitcoin mining is structured so that a new block's hash of a given structure must not exceed a certain target value — this requires frequent recalculations, which is what makes mining difficult.

Key advantages that blockchain technology provides:

• Decentralization
• Efficiency and transaction speed, which can be influenced by fee size
• Transparency. Information in all blocks is open to all network participants and third-party researchers familiar with blockchain analysis tools
• Pseudonymity. Blocks contain wallet addresses of transaction participants without a direct link to personal data. It's important to understand this isn't the same as anonymity — the entire transaction history is public and traceable, and under certain conditions (for example, through exchanges with identity verification or chain-analysis techniques) a wallet address can be linked to a specific individual
• Lower transaction costs compared to most traditional payment methods, especially international ones
• No need to trust other network participants — transaction security is guaranteed algorithmically, not through a counterparty's reputation

What is Blockchair?

The platform's developers describe it as aiming to become "Google for blockchains" — a single convenient tool for finding information across the crypto space. The project's core principles include:

1. Simplifying blockchain data. Blockchair's tools let you search addresses, blocks, and transactions across different networks, build charts, and get detailed statistics
2. A full-featured API. Developers of crypto projects and research services can access data across dozens of networks, including filtering via SQL queries and access to aggregated news from more than 60 crypto publications
3. Privacy. Unlike many other blockchain explorers, Blockchair states that it does not collect user data or share it with advertising or analytics companies

The platform is available as a web version, a browser extension, and an API. As of 2025, a dedicated Android app also became available, supporting several dozen blockchains directly from a phone — worth knowing if you're looking for mobile access to the service.

Blockchair Interface

The web version features a clean interface with a search bar at the center of the screen, letting you look up information on addresses, blocks, and transactions. Below it is an analytics section showing key indicators for popular cryptocurrencies, with links to expanded statistics for each coin.

The menu in the top-right corner (a "hamburger" icon) gives access to explorers for individual coins, the Blockchair team's other products, and platform settings.

Blockchair's Main Features

Beyond basic search and statistics, the platform offers:

• Customized data access via API
• Data sets in TSV format for use in your own projects
• Data visualization as charts for comparative analysis of coins
• Ethereum Name Service lookups
• Generating PDF transaction receipts
• Reports on transactions associated with a specific wallet
• An anonymous crypto portfolio tracker
• Private broadcasting of raw transactions
• A network node explorer (status, availability, location, and other details)
• Tracking updates for key crypto projects
• A halving counter for coins whose algorithms include one
• Cryptocurrency comparison tools
• A browser extension
• A crypto news aggregator covering more than 60 publications
• The ability to make donations to crypto projects

Available Networks

As of 2026, Blockchair supports more than 46 blockchains — from Bitcoin and its forks (Bitcoin Cash, Litecoin, Dogecoin, Dash, and others) to EVM-based networks (Ethereum, BNB Chain, Polygon, Avalanche, and others) and Layer 2 solutions (Arbitrum, Optimism, Base, zkSync Era, StarkNet, and others). Worth noting: for some networks (for example, XRP, Stellar), the service provides only partial historical transaction data rather than a full archive like it does for its main supported networks. The current full list is always available in the "Explorers" section of the platform menu — it continues to expand.

How to Track a Transaction

To track a transaction, you need its unique identifier — typically a 64-character string of numbers and letters a through f. Enter the ID into the search bar on the homepage. The results show:

• The transaction ID and status
• The execution timestamp (if already confirmed)
• The amount and fee
• Sender and recipient wallet addresses
• A privacy assessment for the transaction, based on public information about the associated wallets

From the same page, you can generate a PDF receipt or share the transaction details as a QR code, link, or image.

Useful Features and Tools

The most commonly used functions include: portfolio monitoring, coin comparison (including via charts), transaction tracking and receipt generation, tracking updates for crypto projects, monitoring network node status, a news aggregator, searching for information about crypto projects, charitable donations, and tracking text data embedded in blocks of supported networks.

FAQ

What are the advantages of the Blockchair API?

The API offers the same capabilities as the main platform, but additionally lets you search and filter data using SQL queries — making it a convenient data source for commercial, analytical, and educational projects with complex functionality.

Is user data secure on Blockchair?

The service doesn't require account registration and states that it doesn't collect or share visitor data with third parties. Privacy is presented as one of the project's core values.

What is the Privacy-o-meter?

A tool that assesses how easily an attacker could trace a transaction's participants using public sources, on a scale from 0 (fully compromised) to 100 (fully private). It also flags which specific associated addresses may be a source of privacy concerns.

Does Blockchair have a mobile app?

Yes, an Android app has been available since 2025, supporting several dozen blockchains. There's currently no dedicated iOS app or desktop program — access on other platforms is through the web version or browser extension.

Is blockchain completely anonymous?

No, this is a common misconception. Blockchain is pseudonymous: wallet addresses don't directly contain personal data, but the entire transaction history is public, and an address can potentially be linked to a specific person through exchanges with identity verification or chain-analysis techniques.