Cryptocurrencies in the context of Proof of stake

Financial technology (abbreviated as fintech) refers to the application of innovative technologies to products and services in the financial industry. This broad term encompasses a wide array of technological advancements in financial services, including mobile banking, online lending platforms, digital payment systems, robo-advisors, and blockchain-based applications such as cryptocurrencies. Financial technology companies include both startups and established technology and financial firms that aim to improve, complement, or replace traditional financial services.

CME Group Inc. (formerly Chicago Mercantile Exchange Holdings Inc.) is an American financial services company based in Chicago, Illinois. It operates financial derivatives exchanges, including the Chicago Mercantile Exchange (CME), the Chicago Board of Trade (CBOT), the New York Mercantile Exchange (NYMEX), and the Commodity Exchange (COMEX). The company owns 27% of S&P Dow Jones Indices. It is the world's largest operator of financial derivatives exchanges. Its exchanges are platforms for trading in agricultural products, currencies, energy, interest rates, metals, futures contracts, options, stock indexes, and cryptocurrencies futures.

Headquartered in Chicago, the company maintains offices in New York, Houston, and Washington D.C., in the United States, as well as abroad in Bangalore, India, Beijing, China, Belfast, Ireland, Calgary, Canada, Hong Kong, London, England, Seoul, Korea, Singapore, and Tokyo, Japan.

Alternative finance refers to financial channels, processes, and instruments that have emerged outside of the traditional finance system, such as regulated banks and capital markets. Examples of alternative financing activities through 'online marketplaces' are reward-based crowdfunding, equity crowdfunding, revenue-based financing, online lenders, peer-to-peer consumer and business lending, and invoice trading third party payment platforms.

Alternative finance instruments include cryptocurrencies such as Bitcoin, SME mini-bond, social impact bond, community shares, private placement and other 'shadow banking' mechanisms. Alternative finance differs to traditional banking or capital market finance through technology-enabled 'disintermediation', which means utilising third party capital by connecting fundraisers directly with funders, in turn, reducing transaction costs and improving market efficiency.

The "everything bubble" refers to the impact on the values of asset prices, including equities, real estate, bonds, many commodities, and cryptocurrencies, due to quantitative easing by the Federal Reserve, European Central Bank, and the Bank of Japan. The policy itself and the techniques of direct and indirect methods of quantitative easing used to execute it are sometimes referred to as the Central bank put. The term "everything bubble" first came in use during the chair of Janet Yellen, but it is most associated with the quantitative easing during the COVID-19 pandemic by Jerome Powell.

The everything bubble notably occurred despite the COVID-19 recession, the China–United States trade war, and political turmoil – leading to a realization that the bubble was a central bank creation, with concerns on the independence and integrity of market pricing, and on the Fed's impact on wealth inequality.

Nouriel Roubini (born March 29, 1958) is an American economic consultant, economist, speaker, and writer. He is a professor emeritus since 2021 at the Stern School of Business of New York University. Roubini earned a BA in political economics at Bocconi University in Italy and a doctorate in international economics at Harvard University. He was an academic at Yale and a researcher/advisor researching emerging markets.

During the Bill Clinton administration in the 1990s, Roubini was for one year a senior economist in the Council of Economic Advisers. He correctly predicted the subprime mortgage crisis and the ensuing Great Recession, and warned that the COVID-19 recession could be even worse. Roubini is also critic of Bitcoin and cryptocurrencies.