Ethereum: How to generate a valid hash for a bip39 seed phrase?
Generating a Valid Hash for a Bip39 Seed Phrase
As you delve deeper into the world of Ethereum’s native cryptocurrency Bitcoin Cash (BCH) and its partner Binance Smart Chain (BEP-51), it’s crucial to understand bip39 seed phrases. However, I’ve noticed that you’re having trouble generating a valid hash of these phrases in a spreadsheet. This article will help you create a valid hash using bip39 seed phrases.
What are Bip39 seed phrases?
Bip39 seed phrases are a way to generate multiple addresses from a single set of 12 words, known as an “alphabet.” These phrases are used for both on-chain and off-chain transactions. The main function is to provide a unique address that can be used to send or receive funds.
How do Bip39 seed phrases work?
Here is a simplified explanation:
- Generating the seed phrase: A bip39 seed phrase consists of 12 words, each separated by the following characters:
0x,.,-,_,,,[, ]”.
- Building the alphabet: Each word in the seed phrase represents a letter of the alphabet (26 letters in total). For example:
- Word 1: “0x”, “.” = “a”.
- Word 2: “0x”, “-” = “b”.
- Word 3: “0x”, “_” = “c”.
*…
- Word 12: “[
, ] = "z".
How to generate a valid Bip39 seed phrase hash
To generate a valid hash, you need to create multiple addresses from the seed phrase. Here is a step-by-step guide:
- Create a passphrase
: Use a text editor or spreadsheet program such as Google Sheets or Microsoft Excel to create a bip39 passphrase.
- Format the passphrase: Make sure each word in the passphrase is separated by one of the following characters:0x
,.,–,_,,,[, ].
- Convert to Hex: Convert the entire passphrase to hexadecimal format using a tool such as Online HEX Converter or a spreadsheet function.
- Find valid hashes: Use online hash generation tools or libraries (such as the ethers.js library) that convert hexadecimal strings to valid Ethereum hashes.
Example: Generating a valid seed phrase hash
Assuming your seed phrase is "0x5b2a0d1f8c9ae1c3b6f7d73a2f4e7a8a":
- Convert the entire seed phrase to hexadecimal:
+ "0x5b", "2a", "0d", "1f", "8c", "9", "ae", "1c"
+ hex: "0xa0edfc9ae1c3b6f7d73a2f4e7a8a"
- Find valid hashes using an online hashing tool or library:
+ethers.jslibrary (JavaScript library for Ethereum development):hash.fromHex(“0xa0edfc9ae1c3b6f7d73a2f4e7a8a”)`
Running this command will give you a valid hexadecimal hash: “0x5b2a0d1f8c9ae1c3b6f7d73a2f4e7a8a”
Tips and Variations
- You can use online tools to generate multiple addresses from a seed phrase.
- To create an off-chain address, you need to concatenate the prefix “0x” with a hexadecimal key. This is where the “0x” character comes in handy when generating seeds.
- Keep in mind that the number of possible hashes increases exponentially as the length of the seed phrase increases.
I hope this explanation and example helped explain how to create a proper hash for bip39 seed phrases. If you have any more questions or need additional advice, feel free to ask!
