BLOCKSIZE CONNECT

BLOCKSIZE CONNECT provides compliant crypto asset prices for professional market players. Users get access to real-time prices or daily closing prices.

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Market Data You Can Trust

BLOCKSIZE CONNECT is a data product that provides commercial customers access to trading data for digital assets via API connectivity. The price data is offered for hundreds of trading pairs, such as BTC/USD, ETH/EUR – and many more pairs. The BLOCKSIZE CONNECT subscription is offered in three complementary product plans, which can be ordered individually:

REAL-TIME VWAP: Volume weighted average prices of crypto assets delivered in real-time through WebSocket API. Price: US $399/EUR 399 per month.

DAILY VWAP: Volume weighted average prices of crypto assets delivered once a day through WebSocket API. Price: US $99/EUR 99 per month.

SLA: Guaranteed API uptime and direct communication channels to the API support team using a Service Level Agreement. Price: US $349/EUR 349 per month.


The market data provided is built on many years of knowledge and expertise of BLOCKSIZE CAPITAL in the area of brokerage solutions for institutional investors when it comes to digital assets.

Trading Pairs

Users get access to reliable trading data from the world’s most trusted trading exchanges for crypto assets.

Ultrafast API Access

The trading data API is offered using web socket connectivity. Live since May 2022!

Data Samples

Users receive real-time trading data of volume-weighted average prices for a growing number of cryptocurrency assets.

Trading Pairs

Users get access to reliable and compliant market prices from the world’s most trusted trading exchanges. Supported quote currencies as of November 16, 2022 include: 1INCH, AAVE, ADA, ADX, AKRO, AMP, AMPL, ANT, APE, ATLAS, AVAX, AXS, BAKE, BAT, BCH, BNB, BOND, BTC, BUSD, CAKE, CBETH, CEL, COMP, CRO, CRV, DAI, DF, DNT, DOGE, DOT, ENJ, EOS, EQZ, ETH, FIL, FTM, FTT, GMX, GRT, INJ, IOST, KLAY, KNC, KP3R, LINK, LRC, LTC, MANA, MATIC, NMR, NU, OCEAN, OGN, OKB, OMG, OP, ORN, OXT, PAXG, PERP, RAY, REN, REP, RLC, RUNE, SAMO, SFP, SNX, SOL, SRM, STEP, SUSHI, THETA, TOMO, TRU, TULIP, TUSD, TWT, UNI, USDC, USDD, USDT, UST, WAVAX, WBTC, WETH, WING, WOM, WSOL, XRP, XTZ, YFI, ZEC, ZRX.

Ultrafast API Access

The trading data API is offered using web socket connectivity. Additional methods allow you to better deal with the data sets, such as using a JSON RPC instrument explorer. An extensive API documentation is providing example requests and the BLOCKSIZE CONNECT support team will answer questions you might have.

Real-time Data Sample

Users of BLOCKSIZE CONNECT receive real-time trading data of volume-weighted average prices (VWAP) for a growing number of cryptocurrency assets. Just download a sample file containing a dump of the real-time trading data feed.

Made for the Best

Created in collaboration with Chainlink, a worldwide leading oracle network for reliable market data, BLOCKSIZE CONNECT is available to customers from all over the world enjoying sub-second access to crypto assets trading data from more than 20 exchanges.

The price feeds do not just include data from reliable centralized exchanged (CEXs), but are also gathered from the decentralized exchanges (DEXs) Uniswap v2, Uniswap v3, Sushiswap, and Serum.

Upcoming near-term integrations will include additional DEXs running on Arbitrum, Optimism, Polygon, zkSync, and StarkNet.

Do you need more details or a trial account?

Enter your contact details in order to get feedback on how to use BLOCKSIZE CONNECT.

Do you have any questions? Our sales team is happy to assist. Get in touch with us today and learn more about how BLOCKSIZE CONNECT can help your business.

Thomas Langbein
Head of Sales & Business Development

BLOCKSIZE CAPITAL