Unlocking the value in data

Open Data Markets Infrastructure

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XBR creates the infrastructure for running decentralized data markets. These data markets can be created as needed and to fulfill the entire variety of participants' requirements. They enable API-based, secure and real-time data sharing between particpants. The XBR token is the means of payment within all XBR data markets.

Technology

XBR Data Markets and the Ethereum Blockchain

xbr data markets diagram
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Data is traded within XBR data markets. These run under the control of individual market providers. They can be set up to fit any specific needs.

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Particpants can be members in multiple markets.

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Participants and data markets register with the XBR smart contracts on the Ethereum blockchain.

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Payment within markets utilizes the XBR token. Tokens are locked into a market, and invidual transactions are handled in the market. Token balances are periodically cleared on the Ethereum blockchain.

Encrypted Data Exchange Based on Crossbar.io

data sharing via XBR
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Data providers and data consumers each establish a single connection to the Crossbar.io-based infrastructure of a XBR data market.

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Data providers publish data update streams, and these are automatically delivered to all subscribed data consumers.

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Data consumers request specific information by making API calls, with the call routed via Crossbar.io.

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Data updates and call results are encrypted by the data provider.

Key Exchange in the XBR Data Market

private data exchange diagram
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The data provider shares an encryption key for data transmitted via the data provider's API.
This can be e.g. for a particular API call or for a set of past and future events.

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The data consumer provides the agreed amount of XBR tokens as payment for the encryption key.

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The market maker code handles the exchange of encryption key and XBR tokens.

Whitepaper

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Whitepaper

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Disclaimer

The content provided in this Whitepaper is intended solely for general information and advertising purposes. The duties and rights of the parties with regard to a sale and purchase of XBR Token are exclusively governed by the sale agreement and the TOKEN SALE TERMS & CONDITIONS.

NO ADVICE AND NO RISK DISCLOSURE

The purchase of XBR Token is associated with significant risks. The purchaser of XBR Token should carefully consider and evaluate all risks and uncertainties associated with Crossbar.io, its business and operations, the XBR technology and the XBR Token. The decision to purchase XBR Token should not be based solely on this Whitepaper. The information presented in the Whitepaper are not satisfactory for a well-informed decision.

Crossbar.io does not assume a risk disclosure for the purchaser and/or any kind of investment advice or services, counsel or solicitation. In case of any doubt the purchaser should consult legal, financial, tax or other professional advisors.

LEGAL NATURE OF XBR TOKEN AND OF THIS WHITEPAPER

XBR Token are not intended to constitute securities or any other form of capital investment product in any jurisdiction. They do not grant any rights in any company, dividends, payment of any interest, profit participation or any other remuneration for the provision of capital. XBR Token are only used as settlement for API access and transactions within the XBR data markets.

This Whitepaper does not constitute a prospectus or offer document of any sort. It is not intended to constitute an offer for sale of, nor an invitation for an offer to purchase or subscribe for, XBR Token in general and securities or any other form of capital investment product in particular. This Whitepaper is also not intended to constitute a solicitation for investment in securities or any other form of capital investment product in any jurisdiction.

DISCLAIMER OF LIABILITY

The information in the Whitepaper was prepared with reasonable care and attention. However, it is possible that some information in the Whitepaper is incomplete, incorrect, inapplicable to particular circumstances or conditions, or subject to change without notice.

To the maximum extent permitted by the applicable laws, regulations and rules, Crossbar.io shall not be liable for any indirect, special, incidental, consequential or other losses of any kind, in total, contract or otherwise (including but not limited to loss of revenue, income or profits, and loss of data), arising out of or in connection with any acceptance of or reliance on this Whitepaper or any part thereof.

Each recipient of this Whitepaper is to rely solely on their knowledge, investigation, judgement and assessment of the matters which are the subject of this Whitepaper and any information which is made available in connection with any further enquiries and such recipient must satisfy themselves as to the accuracy and completeness of such matter.

NO REPRESENTATIONS AND WARRANTIES

Crossbar.io does not make or purport to make, and hereby disclaims, any representation, warranty or undertaking in any form whatsoever to any entity or person, including any representation, warranty or undertaking in relation to the truth, accuracy and completeness of any of the information set out in this Whitepaper. The only binding document are the sale agreement and the TOKEN SALE TERMS & CONDITIONS.

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Deep expertise...

...in open source, enterprise software and privacy protection

Global players

Software created by the XBR core team is used by Continental, Telstra, Airbus, the browser teams at Mozilla, Google and Microsoft, by Facebook, Red Hat, the Tor project - and many others!

Global scaling

Mozilla uses the Autobahn|Python Library for the push notifications to tens of millions of Firefox instances world-wide.

Global development

The ecosystem around the open Web Application Messaging Protocol (WAMP) created by the XBR core team encompasses 20+ client libraries and 10+ router implementations provided by third parties.

Global alliances

XBR is run by Crossbar.io, partnering with Audi, SAP and Continental AG in IoT research.


To learn more visit

Crossbar.io Autobahn|Testsuite txtorcon WAMP protocol

Roadmap

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Team

Advisors

Our philosophy

We value openness,
security and privacy

Frequently Asked Questions

What is the difference between xbr and crossbar?
Crossbar.io is an established commercial open source project which provides a connectivity layer for distributed components. The XBR project fully leverages this technology foundation to implement a universal data market economy.
Can anybody participate in a data market? Are there any prerequisites?
Anybody can participate in an XBR data market. There are four basic roles: data provider, data consumer, market maker or market operator. Prerequisites are an Ethereum address for registration and a sufficient (prepaid) XBR token balance to purchase data.
Can I offer personal data via XBR?
XBR is intended for exchanging all types of data - including personal data. You are free to chose what you offer, to whom you sell and under what conditions. Since data stays in the endpoints, i.e. under your control, you can stop offering new access to your data at any time.
How does XBR ensure privacy and control of data?
We employ a mixture of technical and legal means: All data is end-to-end encrypted, ensuring that only the data provider and the data consumer have access (even when running on untrusted infrastructure). Data usage is governed by explicit legal usage grants, chosen by the data provider. (We do not consider DRM or other technical solutions a valid approach to limit what data consumers can do with the data.)
How do you handle micro-payments?
Tokens are held on the global Ethereum blockchain and locked into specific markets for use there. Individual transactions occur within the markets, and balances there are kept using state channels. Balances on the global blockchain are only cleared on request, e.g. when leaving a specific market. solutions a valid approach to limit what data consumers can do with the data.)