The data layer for Kraken xStocks

xStocks are tokenized US stocks and ETFs that trade 24/7 on-chain. Uniblock gives you one direct API and one key to read xStock prices, balances, and transfers across Solana, Ethereum, and BNB Chain, instead of building the integration yourself.

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VIEW DOCS

Accurate xStock prices

Illustrative preview · sample data, not live quotes

99.9% uptime

60+ assets

Asset

Chain

Price

24h

Trend

AAPLx

Apple Inc.

SOL

$227.31

+1.24%

TSLAx

Tesla Inc.

ETH

$241.05

−0.42%

NVDAx

NVIDIA Corp.

SOL

$118.90

+2.10%

MSTRx

MicroStrategy

BNB

$1,642.18

+3.02%

SPYx

S&P 500 ETF

SOL

$551.20

+0.31%

COINx

Coinbase

ETH

$198.44

−0.88%

METAx

Meta Platforms

SOL

$604.77

+1.05%

+ 53 more tokenized assets across Solana, Ethereum & BNB Chain

Backed 1:1 · Backed Finance

Sample data shown for illustration only

GET

/direct/v1/XStocks/v2/public/assets/{symbol}

{

“symbol”: “AAPLx”,

“name”: “Apple Inc.”,

“price”: 227.31,

“change24h”: 1.24,

“currency”: “USD”,

“backing”: “1:1”,

“backedBy”: “Backed Finance”,

“chains”: [“solana”, “ethereum”, “bnb”],

“volume24h”: 89231044.18,

“proofOfReserves”: true,

“live”: true

}

One call. Everything below.

Assets & prices

Live indicative prices for every xStock and ETF.

Reserves & backing

Proof of reserves and 1:1 backing per asset.

Balances & transfers

Holdings and transfers across Solana, Ethereum, and BNB.

Routing & uptime

Automatically routed across providers for 99.9% uptime.

WHAT ARE KRAKEN XSTOCKS

Real stocks, tokenized on-chain

xStocks are tokenized versions of real US stocks and ETFs, like Apple, Tesla, and the S&P 500, issued 1:1 against the underlying by Backed Finance and distributed by Kraken. Each xStock is an on-chain token (SPL on Solana, ERC-20 on Ethereum, BEP-20 on BNB Chain), so holdings, prices, and transfers are fully transparent and queryable in real time.

WHAT YOU CAN BUILD

APIs that power xStocks products

Everything you need for brokerage-style apps, portfolio trackers, tickers, and compliance tooling on top of tokenized equities, without running Solana, Ethereum, or BNB infrastructure yourself.

Live xStock prices

Stream token prices for AAPLx, TSLAx, and the rest of the xStocks universe via the Market Data API to power tickers and trading UIs.

Holdings & balances

Read any wallet’s xStock token balances on Solana, Ethereum, and BNB Chain with the Token API for portfolio and brokerage-style apps.

Transfers & activity

Track mints, redemptions, and transfers with the Transaction and Scan APIs to build activity feeds and compliance tooling.

Token metadata

Resolve symbols, decimals, and contract metadata for every xStock token so your app always renders the right asset.

PREVIEW

The call looks like this

One key, one request. The placeholder key below is swapped for your own once access is granted.

curl https://api.uniblock.dev/v1/rpc/solana -H "Authorization: Bearer YOUR_API_KEY" -d '{"method":"getSlot","params":[],"id":1}'

COMPARISON

Uniblock vs. building it yourself

The same xStocks workload, two ways to build it.

Uniblock

Build it yourself

Simplicity

One key, one endpoint, typed responses.

Source APIs, SDKs, and glue code to wire up and maintain.

Cost

One plan, usage-based, no per-source minimums.

Separate accounts, minimums, and upkeep per source.

Latency

A managed endpoint tuned for these reads.

You tune and scale the infrastructure yourself.

Correctness

Normalized, typed responses you can trust.

You own normalization, edge cases, and drift.

WHAT'S COVERED

What the xStocks API covers

One direct API and one key, here’s the xStocks data surface you get.

Market Data API

Live xStock prices (AAPLx, TSLAx…)

Token API

xStock balances per wallet

Transaction API

Mints, redemptions & transfers

Scan API

On-chain activity & history

Webhook API

Real-time event triggers

Unified JSON-RPC

Raw Solana, Ethereum & BNB reads

Token metadata

Symbols, decimals & contracts

Proof of reserves

1:1 backing per asset

Reference data

Underlying & corporate actions