Thank you @saltpool

I chose sha256 but there could be an evolution in the future;)

I replaced the concept of UTXO with a wallet bank hash, so unlike Bitcoin, each address holds a material value, which makes the blockchain unachievable too

This is a project that I hope will give a realistic view of the blockchain, this is just a start;)

PS: The next version will probably be a version with an e-commerce

Thank you!