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Mint Datatokens

This tutorial guides you through the process of minting datatokens and sending them to a receiver address. The tutorial assumes that you already have the address of the datatoken contract which is owned by you.

Prerequisites

Create a script to mint datatokens

Create a new file in the same working directory where configuration file (config.py/config.js) and .env files are present, and copy the code as listed below.
ocean.js
ocean.py
mint_datatoken.js
// Import dependencies
const { NftFactory, Datatoken } = require('@oceanprotocol/lib');
const Web3 = require('web3');
const { web3Provider, oceanConfig } = require('./config');
// Create a web3 instance
const web3 = new Web3(web3Provider);
// Change this
const datatokenAddress = "0xD3542e5F56655fb818F9118CE219e1D10751BC82"
const receiverAddress = "0xBE5449a6A97aD46c8558A3356267Ee5D2731ab5e"
// Create a function which will take `datatokenAddress` and `receiverAddress` as parameters
const mintDatatoken = async (datatokenAddress, receiverAddress) => {
const accounts = await web3.eth.getAccounts();
const publisherAccount = accounts[0];
// Create datatoken instance
const datatoken = new Datatoken(web3);
// Get current datatoken balance of receiver
let receiverBalance = await datatoken.balance(
datatokenAddress,
receiverAddress
);
console.log(`Receiver balance before mint: ${receiverBalance}`);
// Mint datatoken
await datatoken.mint(
datatokenAddress,
publisherAccount,
'1',
receiverAddress
);
// Get new datatoken balance of receiver
receiverBalance = await datatoken.balance(
datatokenAddress,
receiverAddress
);
console.log(`Receiver balance after mint: ${receiverBalance}`);
};
// Call mintDatatoken(...) function defined above
mintDatatoken(datatokenAddress, receiverAddress)
.then(() => {
process.exit((err) => {
console.error(err);
process.exit(1);
});
})
.catch((err) => {
console.error(err);
process.exit(1);
});
Execute script
node mint_datatoken.js
mint_datatoken.py
# Note: Ensure that .env and config.py are correctly setup
from config import web3_wallet, ocean
# Change this
datatoken_address = "0xD3542e5F56655fb818F9118CE219e1D10751BC82"
receiver_address = "0xBE5449a6A97aD46c8558A3356267Ee5D2731ab5e"
datatoken = ocean.get_datatoken(datatoken_address)
print(f"Balance before mint: {datatoken.balanceOf(receiver_address)}")
# Mint datatokens
datatoken.mint(
account_address=receiver_address,
value=ocean.to_wei("1"),
from_wallet=web3_wallet,
)
print(f"Balance after mint: {datatoken.balanceOf(receiver_address)}")
nt_d
Execute script
python mint_datatoken.py