Most Accurate Real-Time Crypto Data for Institutions
Data Engineered with Oracles.
Adopted by Financial Institutions.
Blocksize aggregates real-time pricing from 70+ exchanges into one reference price per pair, across 9,000+ instruments — each validated through oracle consensus. Used by asset managers, funds, trading firms and brokers for NAV calculation, fair-value marks, best-execution benchmarking and risk management.
BTC/USD: realtime_vwap
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ETH/USD: realtime_vwap
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SOL/USD: realtime_vwap
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Proven on-chain. Delivered off-chain.
The only data provider whose feed is proven on-chain — securing billions across DeFi — and delivered off-chain for mission-critical use cases.
$38Bn
Total Value Secured
8
DONs Covered
5M+
On-Chain Transactions
Tier 1
Data Publisher
Why Blocksize?
Oracle-Grade
We operate as a tier-one data publisher across Chainlink, Pyth, Redstone and more. Every price update is independently validated by node operators and verified through on-chain consensus, creating continuous quality enforcement at every block.
Multi-Venue Fair Value
Even top-tier exchanges only fall within a tight fair-value corridor 25% of the time. Single-source feeds are incomplete. Thats why we aggregate prices from 70+ exchanges across 9,000+ pairs in real-time. Capturing the full picture of global liquidity.
Proven On-Chain
The same feeds securing $38Bn across 8 leading oracle networks are delivered directly into institutional systems via API. No other provider bridges on-chain consensus verification with off-chain institutional delivery at this scale.
Accuracy First
Our sub-250ms multi-venue VWAP updates multiple times per second. In crypto markets, exceeding settlement speed yields no practical advantage, while improving accuracy yields immense benefit. Every update arrives validated, not merely fast.
Off-Chain
Whitepaper
Real‑Time Crypto Aggregation Matters More Than Ever
Single-exchange data in crypto isn’t just incomplete – it’s statistically wrong. A global, 24/7, fragmented market, makes legacy “one feed” setups unfit for trading, risk, and valuation - we reflect on the the new normal: real-time, market-wide aggregation.
Pricing Packages
Prices for Mission Critical Use-Cases
The Business tier is built for firms running valuation, best execution and surveillance workflows daily — where a pricing error doesn't just look wrong, it lands in a report someone has to sign. It adds AMM state prices and trade events on top of the full VWAP and bid/ask set, a commercial licence, ten API keys, and three months of history for reporting and backtesting. Same data quality as every other tier; more capacity, more coverage, and Slack support when something needs an answer the same hour.
14 day trial available
15%
Developer
For simple apps, scripts, or dashboards that need reliable crypto prices without complexity. Quick access with just enough coverage to get started.
€49 per month
Start-Up
For teams building products that rely on consistent, scalable pricing across multiple assets — whether for portfolio tracking, in-app pricing, or automated trading.
€299 per month
Business
For teams running best execution, benchmarking, surveillance, or risk management. Methodology-driven pricing and broader coverage for high-confidence operational and compliance decisions.
€799 per month
Enterprise
For institutions, oracles, and systems requiring oracle-grade live aggregation and accuracy. Built for integrations at scale, procurement, redistribution, and mission-critical pricing infrastructure.
€Request per month
Customer Voices
Blocksize has proven to be a reliable and forward-thinking data infrastructure provider, delivering institutional-grade access to high-quality digital asset market data. Their commitment to transparency and robust infrastructure has made them a key contributor to strengthening the Chainlink ecosystem (...)
Will Janensch
Director Data Providers
The support and response times have been fantastic with Blocksize.
Arjun Somvanshi
Reliability Engineer
We proudly collaborate with Blocksize to seamlessly integrate their premium, high-fidelity market data into our Chainlink node operations, enhancing the reliability and accuracy of data used in smart contracts
Claudiu Nae
Founder
Behind the Data
Blocksize Business Data FAQ
Common questions before our collaboration
If any part of your portfolio touches DeFi — on-chain derivatives, lending protocols, structured products with crypto underlyings — the prices that govern those positions are set by oracle consensus, not by any single exchange. A trader might see one price on Binance, but liquidations, settlements, and margin calls on-chain are triggered by the oracle price. Blocksize delivers those exact oracle-grade prices off-chain into your systems, so your risk models reflect the same reality that smart contracts act on.
Download our Whitepaper to learn more.
We are the only data provider whose feeds are simultaneously battle-tested on-chain — securing $38Bn across 8 leading oracle networks — and delivered off-chain to institutional systems. This means your compliance, risk, and trading teams receive the exact same oracle-grade prices that govern DeFi smart contracts, validated by decentralized consensus.
A single exchange only shows its own order book, which can drift from the real market — on even the most liquid pair, only about 25% of a top exchange's quotes sit within the true multi-venue fair value, and during stress a venue can diverge by 10 basis points or more. Listing sites like CoinGecko show a reference average, not a real-time, validated feed you can build on. We aggregate across 70+ venues in real time, filter outliers, and down-weight drifting sources — so you get the consensus price the whole market agrees on, not one venue's version of it.
As a tier-one oracle data publisher, every price update we produce is independently verified by multiple node operators across decentralized oracle networks like Chainlink, Pyth, and Redstone. Submissions that deviate from consensus are rejected, and operators providing inaccurate data face financial penalties. This creates continuous, real-time quality enforcement — not quarterly audits, but every single block.
Our VWAP methodology and full audit trails support MiFID II best execution reporting, fund NAV calculation, IFRS/GAAP fair-value hierarchy classification, and reporting across major jurisdictions.
Yes — including 30-minute VWAP snapshots for compliance reporting, audit trails, and backtesting. Historical data is available across all covered pairs.
Crypto markets never close, so there is no official closing price to mark against. Our 24-hour and 30-minute VWAP windows provide a documented, reproducible reference price for any timestamp, aggregated across 70+ venues. Firms use Blocksize as the pricing input for NAV calculation, fair-value marks and LP reporting — the classification itself remains the responsibility of the firm and its auditors.
Yes. Historical VWAP and bid/ask snapshots are available across all covered pairs, with 30-minute VWAP snapshots designed for reporting, audit trails and backtesting. Depth is 7 days on Developer, 1 month on Start-Up, 3 months on Business, and extended history on Enterprise.
Blocksize provides the market data input, not the regulatory classification. Our VWAP methodology is published, every price carries a timestamped audit trail, and outputs are reproducible after the fact — the properties auditors look for in a pricing source. Firms use our data within their own best-execution, valuation and reporting processes.
Data
Product Brochure
Towards a Unified View of Fragmented Markets - Together
In crypto, data quality is no longer about raw speed from one exchange; it is about real-time accuracy across the whole market. Get a glimpse of our view.