Blocksize Capital

Blocksize is a leading provider of institutional-grade digital asset data and blockchain infrastructure, powering both DeFi ecosystems and traditional finance.

As a trusted oracle operator on Chainlink, SUPRA, Tellor and Tier-1 publisher on networks like Pyth, we deliver ultra-fast, real-time market data via WebSocket APIs — with no rate limits, no REST call caps, and one transparent price per data type.

Our feeds include VWAPs, bid/ask spreads, and full exchange data coverage, all updating in sub-second intervals.

We are actively expanding our asset coverage, adding trading pairs and connecting to high-demand DEXs based on client needs. From hedge funds and asset managers to protocols and data platforms, Blocksize is the go-to choice for those who need premium, low-latency market data without the enterprise price tag.

Join a platform where precision meets accessibility — and growth never slows down.

We source raw data directly from 50+ vetted centralized and decentralized exchanges via WebSocket and node-based integrations. We apply volume weighting, midprice and VWAP calculations, and advanced anomaly detection to ensure data accuracy and reliability. All data undergoes rigorous quality control by our Data Committee and is served in real time.

What Makes Blocksize Different

Blocksize is a provider of institutional-grade, real-time digital asset data and blockchain infrastructure designed for both DeFi and traditional finance. We combine premium data quality with transparent, flat-rate pricing and unlimited access — enabling our clients to scale without compromise.

Real-Time, High-Quality Market Data
Blocksize delivers sub-second latency data via WebSocket APIs with no rate limits. Our feeds are built for execution, oracle use, and high-frequency analytics. We apply smart transformations like volume-weighted average price (VWAP), midprice, and bid/ask aggregation to deliver cleaner, more accurate insights.

Our data is sourced from 50+ centralized and decentralized exchanges, continuously deduplicated, timestamp-normalized, and filtered for anomalies — ensuring consistent, reliable delivery of real-time prices across asset classes and venues.

Expansive & Evolving Coverage
We actively expand our coverage based on client demand, regularly integrating new trading pairs and DEXs. Whether you need live VWAP, 30-minute closing references, or full bid/ask depth, Blocksize provides multiple data products to support your trading, portfolio valuation, and on-chain applications.

Clients can request custom asset coverage or venue prioritization, and we respond rapidly. This ensures your data infrastructure evolves with your strategy — not behind it.

Unlimited Access. Transparent Pricing.
Unlike other providers, Blocksize does not cap API usage. There are no REST call limits or tiered pricing thresholds. You pay one flat rate per data type, and get unlimited real-time data access via WebSocket APIs — no surprises, no overages.

This makes us up to 70% more cost-effective than legacy data providers, while delivering faster, more developer-friendly infrastructure.

Agile, Client-Focused Service
Blocksize works closely with clients across DeFi protocols, hedge funds, trading firms, and enterprise platforms. Our support is direct, technical, and fast — not a black-box ticket system. We offer tailored integrations, custom feed routing, and proactive roadmap alignment to make sure we’re solving your most important data needs.

Whether you’re integrating with on-chain oracles, building dashboards, launching trading systems, or offering digital asset custody — Blocksize helps you do it faster, smarter, and with data you can trust.

In Summary
Blocksize stands out for delivering:

Sub-second real-time data

Unlimited WebSocket access

Clean, aggregated multi-exchange feeds

Flat-rate pricing

Rapid exchange and asset pair expansion

Oracle-ready accuracy

We power mission-critical DeFi and institutional systems — without artificial limitations or enterprise price tags.

Premium Data. Fair Price. Zero Limits.

Blocksize is fully committed to data privacy and regulatory compliance. While our products are built entirely on public blockchain and exchange data, we voluntarily align with GDPR and CCPA principles. We do not collect or process personal data (PII), and all our market data feeds are privacy-neutral by design. Our infrastructure is hosted in GDPR-compliant environments with strict access controls, encryption, and role-based permissions. For more details, visit blocksize.info/gdpr.