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cake-tech / cake_wallet

The open source repository for Cake Wallet, a noncustodial multi-currency wallet, and Monero.com, a noncustodial Monero-only wallet. Need help? Check out https://guides.cakewallet.com
https://cakewallet.com
MIT License
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Offline Transaction Notes #304

Closed trymeouteh closed 2 years ago

trymeouteh commented 2 years ago

To add notes to transactions to know what the transaction was for, is a useful feature and not popular in cryptocurrency wallet apps. You can add a message to a transaction, however this message is not private at all as it will be immutable on the blockchain forever and in many cases with non-transparent cryptos, visible to all.

By having a offline transaction note feature, you can add a note to any transaction with any important details and keep the data safe on your device locally.

How it works

Lets say this is your a transaction ID of a Bitcoin transaction you send or recieved.

d3ad39fa52a89997ac7381c95eeffeaf40b66af7a57e9eba144be0a175a12b11

In the apps setting you will choose a directory on the device on where transaction note files will be stored. This directory will save the transaction notes for each wallet and the app will read this directory for files to determine if you have transaction notes set for a certain transaction ID.

A folder will be designated for saving TXT files which will look like the example below. Each file will be named after the transaction ID of a crypto transaction you send or recieved.

/Wallet 1/Transaction Notes/Bitcoin (Segwit)/d3ad39fa52a89997ac7381c95eeffeaf40b66af7a57e9eba144be0a175a12b11.txt

Cell phone bill payment for March 2020

/Wallet 3/Transaction Notes/Dash/f4459f800afe9bdbd80fa743e9388006d238422427932b140a184dd35c47990e.txt

Bought a Ledger Nano hardware wallet

Using the seed phrase, this could be used to encrypt the text files and even the text file names making it so other apps or malware cannot determine what transaction IDs you were apart of by seeing the text file names and by seeing the contents of the text files (the transaction notes themselves).

Import/Export

Simpily you can export all of the files in the "Transaction Notes" folder into a ZIP, GZIP or 7Z file. And be able to import a ZIP/GZIP/7Z file into the app to restore your sub address labels.

Third Party Backups/Syncing

Another important feature to this will be syncing/backups of the transaction note files. I strongly suggest having a directory that the user can choose where the transaction note files are stored on a device which gives the users options on how to backup the transaction note files. The user can setup their cloud storage app such as Nextcloud, FileN, etc to do automatic backups of their transaction note files. Users can also use Syncthing to backup and sync the transaction note files between devices.

With how I suggested the file structure to be setup by having a file for every single transaction, it will take up little space, and reduce conflicts when using third party syncing/backup tools compared to having a file that will store multiple transaction notes or all the transactions notes in one single file.

Conclusion

This feature request will make keeping track of transaction easy and private with the ability to backup and even sync transaction notes to other devices using other apps like Syncthing. Cake Wallet is an amazing privacy focused open source wallet on the market. Such a feature will enhance this wallet even further.

SamsungGalaxyPlayer commented 2 years ago

This is already supported.