--- title: "Hafsah (@Iamhafsah) | Hashnode" description: "Learning to live. Read the latest articles by Hafsah on Hashnode." url: "https://hashnode.com/@Iamhafsah" --- @Iamhafsah # Hafsah @Iamhafsah · Joined August 2020 Learning to live ### [Multi-Signature Wallets - what are they?](https://hafsah.hashnode.dev/multi-signature-wallets-what-are-they?utm_source=hashnode&utm_medium=feed) One of the major concerns in blockchain and cryptocurrency is security. Security is an important aspect of the blockchain world, seeing as assets and finances are involved. There have been cases where assets were stolen from a wallet or where minor m... 4 min read · [hafsah.hashnode.dev](https://hafsah.hashnode.dev/multi-signature-wallets-what-are-they?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/multi-signature-wallets-what-are-they/62358dba6647c71acb6434ec) [Mar 19, 2022](https://hashnode.com/posts/multi-signature-wallets-what-are-they/62358dba6647c71acb6434ec) ### [Let's talk about ERC-20 tokens](https://hafsah.hashnode.dev/lets-talk-about-erc-20-tokens?utm_source=hashnode&utm_medium=feed) What Are Tokens? Tokens have different meanings, but in the blockchain world- the one this article is focused on, a token refers to a virtual currency. Tokens can be used to represent a variety of things such as reward systems like points in an onlin... 4 min read · [hafsah.hashnode.dev](https://hafsah.hashnode.dev/lets-talk-about-erc-20-tokens?utm_source=hashnode&utm_medium=feed) [Mar 12, 2022](https://hashnode.com/posts/lets-talk-about-erc-20-tokens/622c61b1c86eecb52b372469) ### [Explaining Solidity Reference Types](https://hafsah.hashnode.dev/explaining-solidity-reference-types?utm_source=hashnode&utm_medium=feed) Solidity, like many programming languages, has different data types. These data types are grouped into two categories which are the reference types and value types. This grouping is based on the location of their data. If the variable stores its own ... 4 min read · [hafsah.hashnode.dev](https://hafsah.hashnode.dev/explaining-solidity-reference-types?utm_source=hashnode&utm_medium=feed) [Mar 5, 2022](https://hashnode.com/posts/explaining-solidity-reference-types/622349e2b9cb874b840c902d) ### [Explaining Solidity Value Types](https://hafsah.hashnode.dev/explaining-solidity-value-types?utm_source=hashnode&utm_medium=feed) explaining value types in solidity for beginners. solidity value types. 4 min read · [hafsah.hashnode.dev](https://hafsah.hashnode.dev/explaining-solidity-value-types?utm_source=hashnode&utm_medium=feed) [Feb 20, 2022](https://hashnode.com/posts/explaining-solidity-value-types/62121876e2db563535e39183) ### [Understanding Git Terminologies : The Fun Way.😎](https://hafsah.hashnode.dev/understanding-git-terminologies-the-fun-way?utm_source=hashnode&utm_medium=feed) There are hundreds of Git tutorials out there; each explaining various aspects of Git, and how to use them. Why then am I creating another one? The answer to this is that I simply want to explain Git in a fun and easy to relate manner. This post does... 11 min read · [hafsah.hashnode.dev](https://hafsah.hashnode.dev/understanding-git-terminologies-the-fun-way?utm_source=hashnode&utm_medium=feed) [4](https://hashnode.com/posts/understanding-git-terminologies-the-fun-way/5f284d76e7b1800ab23def30) [Aug 3, 2020](https://hashnode.com/posts/understanding-git-terminologies-the-fun-way/5f284d76e7b1800ab23def30)