Launched in 2014 by a band of coders and an upstart teenager, Ethereum wants to create an ecosystem where everything works together seamlessly as part of its vision for a ‘world computer’ – and that includes the tokens required to power it.
Ethereum is the popular cryptocurrency and blockchain system that was designed to make it possible for anyone to code nearly any type of app and deploy that on a blockchain. Ethereum is based on the use of tokens which can, among other things, be purchased, sold, or traded. There are several different tokens that are compatible with the Ethereum protocol, and these differ from ether, the current #2 cryptocurrency by market cap that’s flirting with unprecedented all-time price highs at press time. Ether is the currency native to the Ethereum blockchain that is used to pay for transaction fees, miner rewards and other services on the network.
Tokens, in this case, represent digital assets that combine several values and can represent anything from loyalty points to vouchers and IOUs to actual objects in the physical world. In this way, tokens are essentially smart contracts that are developed on Ethereum blockchain, which is an open source blockchain platform that allows for the creation of so-called “smart contracts”. One of the most significant token standards of all for Ethereum is called ERC-20, which is simply a cryptocoin that’s built atop Ethereum and that allows developers of wallets, exchanges and other smart contracts, to know in advance how any new token based on the standard will behave.
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ERC-20 Tokens Empower Developers
The ERC-20 was developed about 18 months ago and defines a common list of rules for all Ethereum tokens to follow. This means that this particular token empowers developers of all types to accurately predict how new tokens will function within the larger Ethereum system. It’s important to note that projects do not need to be redone each time a new token is released, which means that the impact that ERC-20 has on developers is massive. Rather, they are designed to be compatible with new tokens, but in order for a token to be created and transacted on the Ethereum network, it must follow a set of rules. However, there is a great deal of freedom for developers within these rules, which means that the ERC-20 standard is very adaptable and can be used to make a limitless variety of tokens, each with varying functionalities. Developers of new tokens have by-and-large observed the ERC-20 rules, meaning that most of the Ethereum based tokens being created today are ERC-20 compliant even though it is a standard that is not officially enforced or adopted at this point. Some of the more popular ERC-20 tokens are OmiseGo (OMG), Power Ledger (POWR), EOS, Salt, Basic Attention Token (BAT), etc.
ERC-20 Tokens Define Six Functions
ERC-20 defines a set of six functions that other smart contracts within the ethereum ecosystem will understand and recognize, including transferring tokens, inquiring the balance of tokens at a certain address, and the total supply of tokens. These six core functions are found in 99% of all currently live ERC20 tokens. The standard also describes two events (signals) that each token takes on and which other tokens are attuned to. Developers agreed on these six functions and two events as the minimal viable token in order to normalize expected behaviors while communicating across the Ethereum network. By establishing this protocol, Ethereum developers are able to work with external smart contracts easily.
Together, these functions and events make ethereum tokens work the same almost everywhere within the ethereum ecosystem, which means that almost all of the wallets that support the ether currency also support ERC-20 compliant tokens. The most popular wallets that support ether are Jaxx, MyEtherWallet.com and Ethereum Wallet (also called Mist Wallet).
One thing to keep in mind, though, is that ERC-20 is formally a draft, meaning that it has gone unenforced by the broader Ethereum community. Still, it seems that the momentum is strong enough that every new token will likely conform to its set of rules. However, that the standard is still young, so there will be bumps in the road which must occur as Ethereum continues to develop. One of those bumps is that tokens sent directly to a smart contract will lose money because a token’s contract only tracks and allocates money.
When you send tokens to another user from a wallet, for example, that wallet calls on the token’s contract to update the database, which will result in the “loss” of the money associated with that transfer because the token’s contract cannot respond. According to CoinDesk, about $70,000 worth of tokens has already been lost in this manner. Nonetheless, ERC-20 tokens remain a crucial aspect of Ethereum and they are only going to continue becoming more popular and more entrenched in the top 20 cryptocurrencies by market cap.
CaptainAltcoin's writers and guest post authors may or may not have a vested interest in any of the mentioned projects and businesses. None of the content on CaptainAltcoin is investment advice nor is it a replacement for advice from a certified financial planner. The views expressed in this article are those of the author and do not necessarily reflect the official policy or position of CaptainAltcoin.com