---
title: "Blocksize: Real-Time Crypto and RWA Market Data"
description: "Blocksize aggregates crypto and tokenized stock prices from 70+ exchanges, publishes into eight oracle networks and delivers the same feeds through one API."
canonical_url: "https://blocksize.info/"
last_updated: "2026-10-27"
---
Source: https://blocksize.info/
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# Making Digital Assets Bankable
Every asset on-chain deserves the right price.
[Get Free Access](https://matrix.blocksize.capital/auth/open/sign-up)
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## We make sure it gets one, delivering that accuracy to everyone building, trading, and valuing crypto.
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## Blocksize is a market data provider for crypto and tokenized assets. We aggregate prices from more than 70 exchanges in real time, delivered through one API.
BTC/USD · real-time VWAP · **…**
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## We publish into eight leading oracle networks, so our data quality is continuously proven by consensus.
- [Chainlink](https://blocksize.info/node-ops/oracles/chainlink/)
- [Pyth](https://blocksize.info/node-ops/oracles/pyth/)
- [RedStone](https://blocksize.info/node-ops/oracles/redstone/)
- [Band](https://blocksize.info/node-ops/oracles/band/)
- [Supra](https://blocksize.info/node-ops/oracles/supra/)
- [API3](https://blocksize.info/node-ops/oracles/api3/)
- [Tellor](https://blocksize.info/node-ops/oracles/tellor/)
- [SEDA](https://blocksize.info/node-ops/oracles/seda/)
Our clients and partners
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Who Is Blocksize
## We operate across the oracle value chain. Making DeFi more secure and accessible.
We operate publishers in all leading oracle networks, run the node infrastructure that delivers data on-chain, and aggregate the crypto market data that mission-critical use cases depend on, from DeFi protocols to financial institutions.
01 · Aggregate*→*
### [The crypto market data](https://blocksize.info/market-data/)
- BTC/USD**…**
- ETH/USD**…**
- SOL/USD**…**
*70+ exchanges · 9,000+ pairs*
02 · Publish*each network →*
### Publishers in all leading oracle networks
[](https://blocksize.info/node-ops/oracles/chainlink/) [](https://blocksize.info/node-ops/oracles/pyth/) [](https://blocksize.info/node-ops/oracles/redstone/) [](https://blocksize.info/node-ops/oracles/band/) [](https://blocksize.info/node-ops/oracles/supra/) [](https://blocksize.info/node-ops/oracles/api3/) [](https://blocksize.info/node-ops/oracles/tellor/) [](https://blocksize.info/node-ops/oracles/seda/)
*First-party publisher since 2018*
03 · Run*→*
### [The node infrastructure that delivers data on-chain](https://blocksize.info/node-operations/performance/)
- Publishers
- Nodes
- RPC endpoints
*99.99% node uptime*
Mission-critical use cases [DeFi protocols*→*](https://blocksize.info/solutions/oracles/) [Financial institutions*→*](https://blocksize.info/solutions/business/)
### Real-Time Market Data
Best-in-class market data, taken from the source: VWAP from executed trades, consolidated bid/ask from top-of-book updates, state prices read directly from pool contracts. Aggregated in real time across 70+ exchanges and 9,000+ pairs, plus 40 tokenized assets priced 24/7, outliers filtered, delivered over WebSocket at sub-250 ms latency. Built for the highest standards of decentralized oracle networks, developers, and financial institutions.
Crypto feeds
### 9,000+ pairs
- BTC/USD**…**
- ETH/USD**…**
- SOL/USD**…**
Crypto feeds →
RWA feeds · 24/7
### 40 tokenized assets
- Apple*AAPL_AGG*
- Gold*XAU_AGG*
- Tesla*TSLA_AGG*
RWA feeds →
### Consensus Proven
Blocksize operates the infrastructure behind the data: publishers, nodes and RPC endpoints across the leading oracle networks. Every price we submit must hold against consensus before it is accepted on-chain: independent validation, continuously, across networks securing around 75% of all value secured by oracles. A first-party data publisher since 2018, into eight networks. The same feed that is checked on-chain is the one delivered off-chain, through one API.
[Chainlink](https://blocksize.info/node-ops/oracles/chainlink/) [Pyth](https://blocksize.info/node-ops/oracles/pyth/) [RedStone](https://blocksize.info/node-ops/oracles/redstone/) [Band](https://blocksize.info/node-ops/oracles/band/) [Supra](https://blocksize.info/node-ops/oracles/supra/) [API3](https://blocksize.info/node-ops/oracles/api3/) [Tellor](https://blocksize.info/node-ops/oracles/tellor/) [SEDA](https://blocksize.info/node-ops/oracles/seda/)
Solutions
## One Price. Four Teams.
The same live price, in what each team does with it.
LIVE
- BTC/USD REAL-TIME VWAP
[Oracles Publish on-chain Update #4,118,203 8 networks · accepted RWA feeds: rights to publish Example](https://blocksize.info/solutions/oracles/) [Business Mark the book 30m close 14:30 UTC BTC/USD 76,904.20 Methodology link Example](https://blocksize.info/solutions/business/) [Startups Show it in the app Portfolio BTC 0.42 · ETH 3.1 One price per pair Example](https://blocksize.info/solutions/startups/) [Developers One call ws.subscribe(BTCUSD) { price: 77194.11, t: 14:41:08.207 } Example](https://blocksize.info/solutions/developers/)
One Price, Whole Market.
## Crypto liquidity is scattered. There is no consolidated tape and no single official price. The same asset trades at different levels on every venue, and the gaps widen exactly when accuracy matters most. Even the deepest exchanges sit within market-wide fair value only 25% of the time. Blocksize aggregates into one price the whole market agrees on.
- Illustration · share of volume
- Venue A**21%**
- Venue B**18%**
- Venue C**16%**
- Venue D**13%**
- Venue E**12%**
- Venue F**11%**
- Venue G**9%**
- Blocksize**one price**
**5,000,000**On-Chain Transactions*hover ↻* **9,000+**Price Pairs Supported*hover ↻* **75%**Of Value Secured by Oracles*hover ↻* **70+**Exchanges Aggregated*hover ↻*
## a fast but wrong price is just a faster mistake
**Oracle-Verified**Consensus proven. **Outstanding Accuracy**Consensus proven. **Network Contribution**Supporting the whole value chain. **Made in Germany**Accountable by design.
## Verified where it matters most
Our data is published into the leading oracle networks, where every update is checked by consensus before it's trusted on-chain. The same feed that is checked on-chain is the one delivered off-chain.
## Outstanding Accuracy
Every price is held inside a tight fair-value accuracy corridor. Bad prints, stale books and drifting venues are detected and down-weighted. Operated from compliant infrastructure in Germany, with 24/7 monitoring, automated failover, and a hands-on engineering team behind it. Reliability and accuracy you can build on.
## Network Contribution
We aggregate the market data, operate the publishing infrastructure that delivers it on-chain, and stay active in the networks: running RPC nodes where needed, self-staking our own funds, voting in governance, and contributing open-source tooling. Our long-term commitment strengthens the ecosystems we believe in.
## Made in Germany
Blocksize is incorporated in Germany — operating under strict legal frameworks with full transparency and accountability. We operate highly reliable infrastructure, giving our partners confidence in every transaction.
Resources
## Learn more.
The three newest articles from the Blocksize blog, newest first.
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## Crypto Market Data: A Complete Guide
Most guides to crypto market data are a list of data types, and this one is too, in its first half: trade data, order books at three depths, OHLCV, derived prices, reference rates, derivatives data, on-chain data and metadata, plus how each is delivered and where crypto breaks the expectations of anyone arriving from equities. The second half covers what the lists leave out: where a price actually comes from, the five questions that separate a single-exchange quote from a filtered market-wide aggregate, and what each user group needs the data to answer.
1 October 2026 Read more
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## How Oracle Price Feeds Work: A Publisher's View of Getting a Price On-Chain
A smart contract cannot see the outside world. Everything it knows about prices it has to be told, and it acts on the number without question. This article follows a price from an exchange trade to an on-chain value: who aggregates it, who signs it, how the network combines submissions, who validates them, and how push and pull delivery differ. It compares the eight networks Blocksize publishes into, walks through what each does with a bad submission, and reviews the exploits at bZx, Harvest, Cream and Mango that shaped oracle design. The angle is the publisher's: the network can remove one bad submission, but it cannot improve what a publisher sends in.
1 October 2026 Read more
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## Crypto Reference Rates and Benchmarks: What Makes a Price a Reference Rate
A US spot Bitcoin ETF does not value itself off an exchange price. It uses a reference rate: one figure, computed across several exchanges over a fixed window by a published method, from an administrator regulated for the purpose. This article explains what separates a price from a reference rate and a reference rate from a regulated benchmark, walks through how the CME CF Bitcoin Reference Rate is calculated, sets out the range of rates from once-daily settlement to continuous, and names the five properties every reference rate needs.
1 October 2026 Read more
## Getting Started with Blocksize Market Data
Everything you need before you integrate: what we cover across exchanges and asset classes, which data products are included at each tier, how the feed is delivered and documented, what it costs, and who relies on it.
### What makes Blocksize different?
We operate the infrastructure behind the data: publishers, nodes and RPC endpoints across eight leading oracle networks. Our prices have to hold against consensus on-chain, validated continuously by parties with no incentive to agree with us. Most market data vendors publish a number and ask you to trust it; ours is checked by independent operators every time it goes on-chain, across networks securing around 75% of all value secured by oracles.
### Who is Blocksize market data for?
Asset managers and funds use Blocksize for NAV and fair-value marks their auditors sign off. Trading firms and brokers use it for best-execution benchmarks and backtesting against clean history aggregated across all venues. Crypto businesses, exchanges, custodians and lenders use it for pricing, collateral and risk. Oracle networks and DeFi protocols use Blocksize as a first-party data publisher, as they have since 2018.
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### What data is covered?
More than 70 centralized and decentralized exchanges, and over 9,000 crypto price pairs, aggregated and updated in real time. Coverage spans majors like BTC, ETH and SOL through to long-tail and low-liquidity pairs, where single-venue pricing breaks down most severely. RWA feeds add 38 tokenized stocks, gold and silver, priced 24/7 through the same API.
### What data products are available?
Real-Time VWAP, Real-Time Bid/Ask, 24-Hour VWAP and 30-Minute VWAP are included on every plan. AMM State Price and tick-level trade Events are available from Business upwards. Each is drawn from its own source: VWAP from executed trades, bid/ask from top-of-book updates, state prices read directly from pool contracts. The 24-hour and 30-minute VWAP windows are built for closing marks, end-of-day valuation and audit-ready reporting. RWA bid/ask feeds price 38 tokenized stocks, gold and silver around the clock. [RWA perpetuals](https://blocksize.info/market-data/rwa/#perps) are coming soon.
### How to integrate Blocksize data?
Data is delivered over WebSocket at sub-250ms latency, with HTTP available on Enterprise plans. The [API documentation](https://matrix.blocksize.capital/api-docs) covers authentication, subscription methods, message schemas and error handling, with a machine-readable spec at [api-docs.json](https://matrix.blocksize.capital/api-docs.json). AI agents can connect through our [MCP server](https://mcp.blocksize.info/) without writing integration code.
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### What does it cost?
Pricing is published: Developer at €49, Start-Up at €299 and Business at €799 per month, with Enterprise quoted individually. Tiers differ by active feed count, API keys, concurrent connections, licence type and support level. Data quality is identical across all of them. [See all plans and limits →](https://blocksize.info/pricing/)
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### Can I test the data first?
Yes. 14 days free. [Create an API key](https://matrix.blocksize.capital/auth/open/sign-up) in the data portal and you can be streaming live data within minutes. The trial gives you the real feed, not a sandbox or delayed sample, so you can benchmark it against whatever you're using today.
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Free trial
## Test the Feeds on Live Data.
Every plan starts with a 14-day trial on live data.
[Start your trial](https://matrix.blocksize.capital/auth/open/sign-up) [Talk to us](https://blocksize.info/contact/)
1. 01 Sign up
2. 02 Get your key
3. 03 Subscribe
ws.subscribe("BTCUSD", "realtime_vwap")