Essentially, any cryptocurrency network is based on the absolute consensus of all the participants regarding the legitimacy of balances and transactions. If nodes of the network disagree on a single balance, the system would basically break. However, there are a lot of rules pre-built and programmed into the network that prevents this from happening.
In 1998, Wei Dai published a description of "b-money", characterized as an anonymous, distributed electronic cash system. Shortly thereafter, Nick Szabo described bit gold. Like bitcoin and other cryptocurrencies that would follow it, bit gold (not to be confused with the later gold-based exchange, BitGold) was described as an electronic currency system which required users to complete a proof of work function with solutions being cryptographically put together and published. A currency system based on a reusable proof of work was later created by Hal Finney who followed the work of Dai and Szabo.
<>The Community Bankers US Government Fund broke the buck in 1994, paying investors 96 cents per share. This was only the second failure in the then 23-year history of money funds and there were no further failures for 14 years. The fund had invested a large percentage of its assets into adjustable rate securities. As interest rates increased, these floating rate securities lost value. This fund was an institutional money fund, not a retail money fund, thus individuals were not directly affected. >
<>A Government money fund (as of the SEC's July 24, 2014 rule release) is one that invests at least 99.5% of its total assets in cash, government securities, and/or repurchase agreements that are “collateralized fully” (i.e., collateralized by cash or government securities). A Treasury fund is a type of government money fund that invests in US Treasury Bills, Bonds and Notes. >
A money market fund is a type of fixed income mutual fund with very stringent maturity, credit quality, diversification, and liquidity requirements intended to help it achieve its goals of principal preservation and daily access for investors. Customers should determine when picking a money market fund that its characteristics align with their investment objectives and strategy.
Take the money on your bank account: What is it more than entries in a database that can only be changed under specific conditions? You can even take physical coins and notes: What are they else than limited entries in a public physical database that can only be changed if you match the condition than you physically own the coins and notes? Money is all about a verified entry in some kind of database of accounts, balances, and transactions.
<>Institutional prime and institutional municipal money market mutual funds are funds that do not qualify as retail funds—i.e., they may be held by institutional investors. These funds are subject to potential liquidity fees and redemption gates, and will price and transact at a floating NAV (meaning that the NAV will be priced to 4 decimal places, e.g. $1.0000, and will experience fluctuations from time to time). >
<>The blender costs $100 to manufacture, and the U.S. firm plans to sell it for €150—which is competitive with other blenders that were made in Europe. If this plan is successful, the company will make $50 in profit because the EUR/USD exchange rate is even. Unfortunately, the USD begins to rise in value versus the euro until the EUR/USD exchange rate is .80, which means it now costs $0.80 to buy €1.00. >
All the features of a standard mutual fund apply to a money market fund, with one key difference. A money market fund aims to maintain a net asset value (NAV) of $1 per share. Any excess earnings that get generated through interest on the portfolio holdings are distributed to the investors in the form of dividend payments. Investors can purchase or redeem shares of money market funds through investment fund companies, brokerage firms, and banks.
<>Government Normally at least 99.5% of the fund’s total assets are invested in cash, U.S. government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities)—including at least 80% in U.S. government securities and repurchase agreements for those securities. Certain issuers of U.S. government securities (e.g., “Government-Sponsored Enterprises” such as Fannie Mae, Freddie Mac, and the Federal Home Loan Banks) are sponsored or chartered by Congress, but their securities are neither issued by nor guaranteed by the U.S. Treasury. >
For trading purposes, the first currency listed in the pair is always the directional currency on a forex price chart. If you pull up a chart of the EUR/USD, and the price is moving higher, it means the EUR is moving higher relative to the USD. If the price on the chart is falling, then the EUR is declining in value relative to the USD. The attached chart shows this.