ERC20 - Signature-Based Minting

You can utilize these features of the SDK on your contract if it implements SignatureMintERC20.

Learn how to implement SignatureMintERC20

Generate a signature

Generate a signature that can be utilized to mint tokens by another wallet.

The signature specifies any information about the tokens such as the price and currency.

Admin Operation

The generation of signatures requires the wallet to have the MINTER role on the contract by default.

React

const startTime = new Date();
const endTime = new Date(Date.now() + 60 * 60 * 24 * 1000);
const payload = {
  quantity: 4.2, // The quantity of tokens to be minted
  to: {{wallet_address}}, // Who will receive the tokens
  price: 0.5, // the price to pay for minting those tokens
  currencyAddress: NATIVE_TOKEN_ADDRESS, // the currency to pay with
  mintStartTime: startTime, // can mint anytime from now
  mintEndTime: endTime, // to 24h from now,
  primarySaleRecipient: "0x...", // custom sale recipient for this token mint
};

const signedPayload = await contract.erc20.signature.generate(payload);
// now anyone can use these to mint the NFT using `contract.erc20.signature.mint(signedPayload)`

This snippet is for v3 of the SDK. Learn how to upgrade.

View in React SDK Documentation

Javascript

const startTime = new Date();
const endTime = new Date(Date.now() + 60 * 60 * 24 * 1000);
const payload = {
  quantity: 4.2, // The quantity of tokens to be minted
  to: {{wallet_address}}, // Who will receive the tokens
  price: 0.5, // the price to pay for minting those tokens
  currencyAddress: NATIVE_TOKEN_ADDRESS, // the currency to pay with
  mintStartTime: startTime, // can mint anytime from now
  mintEndTime: endTime, // to 24h from now,
  primarySaleRecipient: "0x...", // custom sale recipient for this token mint
};

const signedPayload = await contract.erc20.signature.generate(payload);
// now anyone can use these to mint the NFT using `contract.erc20.signature.mint(signedPayload)`

This snippet is for v3 of the SDK. Learn how to upgrade.

View in Javascript SDK Documentation

Python

This feature is missing a code snippet or might not be supported yet.
Check the Python SDK documentation for more information.
Reach out on Discord for further assistance!

View Python SDK Documentation

Go

This feature is missing a code snippet or might not be supported yet.
Check the Go SDK documentation for more information.
Reach out on Discord for further assistance!

View Go SDK Documentation

Unity

string connectedAddress = await sdk.wallet.GetAddress();
string quantity = "1";
var payload = new ERC20MintPayload(connectedAddress, quantity);
var signature = await contract.ERC20.signature.Generate(payload);

---

Use a signature to mint tokens

Mint a certain amount of tokens from a previously generated signature.

React

// see how to craft a payload to sign in the `generate()` documentation
const signedPayload = contract.erc20.signature.generate(payload);

// Use the signed payload to mint the tokens
const tx = contract.erc20.signature.mint(signedPayload);

This snippet is for v3 of the SDK. Learn how to upgrade.

View in React SDK Documentation

Javascript

// see how to craft a payload to sign in the `generate()` documentation
const signedPayload = contract.erc20.signature.generate(payload);

// Use the signed payload to mint the tokens
const tx = contract.erc20.signature.mint(signedPayload);

This snippet is for v3 of the SDK. Learn how to upgrade.

View in Javascript SDK Documentation

Python

This feature is missing a code snippet or might not be supported yet.
Check the Python SDK documentation for more information.
Reach out on Discord for further assistance!

View Python SDK Documentation

Go

This feature is missing a code snippet or might not be supported yet.
Check the Go SDK documentation for more information.
Reach out on Discord for further assistance!

View Go SDK Documentation

Unity

// Use the signature you generated above to pass into the Mint method.
  var nft = await contract.ERC20.signature.Mint(signature);