# "My Hash Is Nice" explained to my buddy

**Ouziel:** Hey Rico, take a look at my new project: https://myhashisnice.org/!

**Rico:** I didn't understand any of it, lol!

**Ouziel:** You're not the first to tell me that! I need to simplify the website.

**Rico:** Give me a quick explanation!

**Ouziel:** Do you know what a "hash" is?

**Rico:** Umm... no.

**Ouziel:** It's like a fingerprint for data! Each hash is uniquely associated with a set of bytes, like an image or Bitcoin transactions.

**Rico:** But what does it look like?

**Ouziel:** It's a string of 64 hexadecimal characters. Check out https://mempool.space/ to see many examples.

**Rico:** I get it. A hash is a unique identifier for a file, like a fingerprint is for a person!

**Ouziel:** Exactly! Each byte string has a unique hash.

**Rico:** I'm on mempool.space and each Bitcoin block has a hash?

**Ouziel:** Yes! And each transaction inside a block has its own hash called a "txid".

**Rico:** OK, I understand!

**Ouziel:** Did you notice that block hashes start with lots of zeros?

**Rico:** No, I didn't! How does that happen?

**Ouziel:** That's what Bitcoin miners calculate! They're finding hashes with enough zeros.

**Rico:** But how exactly?

**Ouziel:** They take Bitcoin transactions, add random data, and calculate hashes until they find one with enough zeros. It can take billions of attempts!

**Rico:** Now I understand what miners do! But your project is about transaction hashes?

**Ouziel:** Yes! Unlike block hashes, transaction hashes can start with any character.

**Rico:** So transaction hashes are less beautiful than block hashes with zeros.

**Ouziel:** Exactly! That's where https://myhashisnice.org/ comes in.

**Rico:** How do I make my transactions have nice hashes?

**Ouziel:** Like miners! Add random data to your transaction and try until the hash starts with zeros.

**Rico:** And I earn MHIN for that?

**Ouziel:** Yes! If your transaction hash starts with at least 6 zeros, you earn MHIN.

**Rico:** Why are there already so many MHIN in circulation?

**Ouziel:** Since 2009, many transactions by chance begin with 6 zeros. Also, some people create them for fun.

**Rico:** So people have MHIN without knowing it?

**Ouziel:** Yes, thousands! And these MHIN can be transferred like bitcoins.

**Rico:** Interesting! Do you control these MHIN?

**Ouziel:** Not at all! MHIN is like Bitcoin: completely decentralized!

**Rico:** How will you make money with this?

**Ouziel:** Like everyone else! By mining transactions with zeros. The more people mine, the less you earn for the same zeros, but you'll always get something with 6+ zeros.

**Rico:** I'll try mining some transactions!

**Ouziel:** Good luck in your quest for beautiful hashes! 🚀