January 2020
Intermediate to advanced
530 pages
11h 11m
English
Content preview from Blockchain Development for Finance Projects
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Understanding ERC20 and ERC721 smart contract standards
To understand ERC20 and ERC721 contract standards, first, let's look at the concept of fungibility. Fungibility is used to describe the property of an asset where individual units do not hold a special value and can be replaced with another unit of the asset. A good example of this a 10 dollar bill. If you have a 10 dollar bill and I have a 10 dollar bill, they both hold the same value, which is 10 dollars. The bill would not have a higher or lower value depending on who is the owner of the bill. The bills can replace each other very easily. Hence, a 10 dollar bill is a fungible asset. All currency is essentially fungible in nature.
Now, take the case of a different kind of asset. If ...
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