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Crypto feeds
Real-Time Crypto Prices Across 70+ Exchanges.
Blocksize provides aggregated price feeds for crypto and tokenized assets. The crypto feeds turn executed trades and top-of-book quotes from 70+ centralised and decentralised exchanges into one price per pair, for 9,000+ pairs, in five price types.
LIVE
- BTC/USD REAL-TIME VWAP
- ETH/USD REAL-TIME VWAP
- SOL/USD REAL-TIME VWAP
Validated on-chain. Delivered off-chain.
Every price Blocksize publishes into oracle networks is checked by independent node operators before it is accepted. The same feeds are delivered off-chain through one API.
- 9,000+ pairs
- 70+ exchanges
- sub-250 ms
- 99.9% uptime guarantee
Price types
One Pair. Five Price Types.
- vwap_subscribe
Real-Time VWAP
A continuously updated volume-weighted average of executed trades across all accepted venues. The live reference price for a pair.
Real-Time VWAP methodology - bidask_subscribe
Bid/Ask
A volume-weighted bid and ask built from top-of-book updates. Shows where the market buys and sells now, useful in thin pairs.
Bid/Ask methodology - state_subscribe
State price
A price read from DEX pool reserves, for tokens that trade mainly on decentralised exchanges and have little trade data.
API documentation - closingprice_list
Historical prices
A closing price every thirty minutes, published five seconds after the interval, and a rolling 24-hour VWAP. Fixed reference prices for marks, NAV and reporting.
30-Minute VWAP methodology 24-Hour VWAP methodology - trade_subscribe
Trades
Raw executed trades, tick by tick, across venues. For research, surveillance and own analytics.
API documentation
Methodology
Accuracy You Can See.
Aggregated feeds benchmarked live against single exchanges.
Price Provider Selection
Live Price Feed Comparison
Outlier Detection
Individual trades are filtered using confidence interval models. If a trade price significantly deviates from the statistical norm, it is excluded.
Dynamic Source
We continuously monitor exchange behavior for consistency and accuracy. Markets that show sustained drift, staleness, or unreliable volume are dynamically excluded.
Contingency Logic
We have clearly defined rules in place to address rare situations where data is delayed, missing, or unavailable — such as during low liquidity events or extraordinary market conditions.
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Governance by Design
All methodology rules are overseen by the Blocksize Data Committee. Inclusion of new data sources or methodological changes follow formal review — combining automation with expert accountability.
Why aggregate
Even the deepest exchanges sit within market-wide fair value only about 25% of the time, in a Blocksize study across 23 exchanges. A single-venue price is a partial view. One aggregated price is a number to build on.
25%
of the time within market-wide fair value, deepest exchanges
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10+ bps
divergence in stress
23
exchanges in the Blocksize study
Built for Integration
WebSocket and REST, one key, machine-readable spec at api-docs.json, MCP server for AI agents.
{
"jsonrpc": "2.0",
"id": 6712,
"method": "vwap_subscribe",
"params": {
"tickers": ["BTCEUR", "ETHEUR"]
}
}Pricing Packages
Crypto Market Data Pricing
Choose the data tier that matches your scale and precision requirements.
-
Developer
For simple apps, scripts, or dashboards that need reliable crypto prices without complexity.
€49 / month
Billed monthly · €499 if billed yearly
€499 / year
Billed yearly · save €89 a year
- Assets
- Crypto RWA
- Price types
- VWAP, bid/ask, daily close (NAV)
- Active feeds
- 5
- Historical data
- 7 days
- Seats
- 1
- Support
- Docs, email
-
Start-Up
For teams building products that rely on consistent, scalable pricing across multiple assets.
€299 / month
Billed monthly · €3,049 if billed yearly
€3,049 / year
Billed yearly · save €539 a year
- Assets
- Crypto RWA
- Price types
- VWAP, bid/ask, daily close (NAV)
- Active feeds
- 50
- Historical data
- 1 month
- Seats
- 5
- Support
- Docs, email
-
Business
RecommendedFor teams running best execution, benchmarking, surveillance, or risk management.
€799 / month
Billed monthly · €8,149 if billed yearly
€8,149 / year
Billed yearly · save €1,439 a year
- Assets
- Crypto RWA
- Price types
- VWAP, bid/ask, daily close (NAV), AMM state prices
- Active feeds
- 350
- Historical data
- 3 months
- Seats
- 10
- Support
- Docs, email, Slack (4 h response)
Enterprise
Custom
For institutions, oracles, and systems requiring oracle-grade live aggregation and accuracy.
- Unlimited feeds
- AMM state prices
- Commodities
- HTTP delivery
- History on request
- Custom seats
- Slack (1 h response)
- 24/7 phone escalation
- Custom feeds on request
- 99.9% uptime SLA
Behind the data
Crypto feeds FAQ
Listing sites show a reference average for display. Blocksize produces a validated real-time feed for systems: outliers filtered, drifting venues excluded, methodology published, the same feed verified on-chain by independent operators.
As a first-party publisher in eight oracle networks, every price update is checked by node operators against other publishers before it is accepted. Deviating submissions are rejected.
Firms use the 24-hour and 30-minute VWAP as the pricing input for NAV, fair-value marks and LP reporting. The classification stays with the firm and its auditors. Blocksize is not a registered benchmark administrator.
Yes. VWAP and bid/ask snapshots across all pairs. The depth depends on the plan, see Pricing.
Yes, through the RWA feeds: 35 tokenized stocks, gold and silver, priced 24/7, on the same bid/ask endpoints.
A price read from the reserves of a DEX liquidity pool. It covers tokens that trade mainly on decentralised exchanges, where few trades exist to aggregate.