A blockchain is a distributed database that maintains a continuously-growing list of data records hardened against tampering and revision. wikipedia.org

Ethereum is an open source, public, blockchain-based distributed computing platform and operating system featuring smart contract (scripting) functionality. It supports a modified version of Nakamoto consensus via transaction-based state transitions. wikipedia.org

Financial software or financial system software is special application software that records all the financial activity within a business organization.

Betfair is the world's largest Internet betting exchange. The company is based in Hammersmith in West London, England. Since Betfair was launched in June 2000 it has become the largest online betting company in the UK and the largest betting exchange in the world. wikipedia.org

QuickFIX is a full-featured open source FIX messaging engine written in C++. It is cross-platform and runs on Windows, Mac OS X, Linux, Solaris, and FreeBSD. A variant QuickFIX/J is an equivalent 100% Java open source implementation of the engine. wikipedia.org

The foreign exchange market is a global, worldwide-decentralized financial market for trading currencies. wikipedia.org

Financial modeling is the task of building an abstract representation (a model) of a financial decision making situation.

MQL 4 is a programming language used to create Expert Advisors, also known as mechanical trade systems, Custom Indicators, Scripts and Libraries of functions that render the trade process management automatic within an electronic trading environment.

Financial analysis (also referred to as financial statement analysis or accounting analysis) refers to an assessment of the viability, stability and profitability of a business, sub-business or project. wikipedia.org