Hello genious 👍

I want to ask if i want to batch mint a nft so it is done by web3.js or smart contract.
I want to mint multiple nft in a single transaction to save gas fees.

Both

Web3 calls the mint function in contract and the contract saves the image url

I'm not a genious bruh

😂

As Blockchain is a server backend in itself so when we need a node.js work in Blockchain ?

Block chain is not a server

Bcoz i have seen many Blockchain job profiles they need nodejs guy for dapps

Block chain is a peer to peer network

The data is stored every were

Blockchain is a database

Node.js is to build an interface to communicate with those peers

You can use web3 to connect to a wss provider

Or an http provider like infura or moralis(both has wss providing services as well)

They forward the data to the network , and the network verifies the data and changes the block chain accordingly. If it is to add data then it adds data if it is to change then it changes the data. This is the most simple way that i can explain a block chain