/biz/ - Business & Finance

>>8473471
For example:
1)Turn whatever file you want into a .txt file.
2)Make transactions with MEW and add that string you have in your .txt file in with your transaction.

You have to segment the file into multiple parts though because a transaction has a size limit usually and also you have to pay more in transaction fees the more data you add. Congratulations, whatever data you put there, is now on the ETH blockchain forever and nobody can change that. On a block explorer anyone can see that data you have put there and they can convert the .txt format back into whatever the file originally was.