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On-chain prices

Prices for Smart Contracts. Crypto and Tokenized Stocks.

Lending, collateral checks, liquidations and settlement depend on the price an oracle delivers. Blocksize is a first-party publisher in eight oracle networks, which together secure around 75% of all value secured by oracles. Every update is validated against consensus before it is accepted on-chain. Off-chain systems get the same feeds through one API.

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  • BTC/USD REAL-TIME VWAP vwap_subscribe
  • ETH/USD REAL-TIME VWAP vwap_subscribe
  • SOL/USD REAL-TIME VWAP vwap_subscribe

Why the price source matters

A liquidation runs on one number. A tokenized stock position needs that number on Saturday, when the stock exchange is closed. A thin DEX market needs a number that reflects real liquidity, with outliers filtered out. Proven on-chain. Delivered off-chain.

Box

8

oracle networks

Activity (1)

about 75%

of oracle-secured value

Shield

37

RWA feeds, 24/7

Database

70+

exchanges

Through the oracle

Most protocols take the Blocksize price through their oracle network. Blocksize publishes into Chainlink, Pyth, RedStone, Supra, API3, SEDA, Band and Tellor, and runs the nodes behind them.

Through the oracle

Tokenized stocks at every hour

35 tokenized stocks, gold and silver, priced 24/7 from eligible exchange quotes. A price for collateral when the exchange is closed.

Tokenized stocks at every hour

Mark price reference

One spot reference across 70+ exchanges for mark price, funding and settlement, with state prices for thin DEX markets.

Mark price reference

RWA perpetual futures prices

Coming soon. Prices for tokenized stocks and commodities in the hours the exchange is closed.

Get notified

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+ crypto pairs
  • 70+ exchanges
  • 37 RWA feeds
  • sub-250 ms latency

Always On

Oracle Publisher Performance

Our publisher infrastructure is built for measurable performance and institutional-grade reliability, with automated failover and 24/7 monitoring.

Publisher Status

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+6 more

One price, two ways in

A protocol that reads prices from its oracle network already receives Blocksize data where Blocksize is a publisher; the network's node operators check every update against other publishers before it is accepted. A protocol or platform that needs the price off-chain, for a frontend, a risk engine or a settlement job, takes the same feed over WebSocket or REST. The RWA feeds are delivered through the API today; on-chain publication of RWA feeds follows the oracle networks' own listing processes.

Read how oracle price feeds work
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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.
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Crypto Prices Explained: VWAP, Bid/Ask, Mid, Mark, Index and State Prices

Ask what Bitcoin costs and you get a number. Ask which number and the conversation gets interesting: last trade, best bid, best ask, mid, VWAP, and for perpetuals a mark and an index price, plus a state price on decentralised exchanges that needs no trade at all. This article follows one Bitcoin through every one of them at the same moment, shows how each is calculated, explains why positions are liquidated on mark price and not the chart, and ends with a decision table for which price to use for what.
Live 9,000+ pairs

Crypto feeds

One price per pair from 70+ exchanges
  • Real-time VWAP
  • Bid/ask
  • State price
  • Historical prices
  • Trades
View crypto feeds Start your trial
Live 37 feeds

RWA feeds

The tokenized market price, 24/7
  • Bid/ask
View RWA feeds Start your trial

On-chain

On-chain prices FAQ

Through its oracle network, where Blocksize is a first-party publisher. Off-chain systems use the API.

Chainlink, Pyth, RedStone, Supra, API3, SEDA, Band and Tellor.

The RWA feeds are delivered through the API. Full redistribution rights are available, so the feeds can be published on-chain through an oracle network.

State prices are read from DEX pool reserves for pairs with little trade data, and the aggregation filters outlier trades across venues. The methodology is published.

RWA perpetual futures prices are coming. No date yet. Sign up on the RWA page to get notified.

Looking for another use case?

Best execution Valuation and NAV Risk and backtesting Mark prices and settlement For Oracles

Free trial

Test the Feeds on Live Data.

14 days, no card required.

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