EVM Tokens (Ethereum-based blockchains)
Instantiate Cryptum SDK first:
const sdk = new CryptumSdk({
environment: 'testnet',
apiKey: 'YOUR-API-KEY',
})
The smart contract used in this deployment is already precompiled in Cryptum. For more details, you can see the source code here
./contracts/TokenERC20.sol.opts.wallet(Wallet) (required) - wallet creating the token.opts.name(string) (required) - token name.opts.symbol(string) (required) - token symbol.opts.decimals(number) (required) - token decimal places.opts.amount(string) (required) - token amount to be first minted. (this is in largest unit ether)
This function returns the transaction hash from the blockchain. This hash can be used later to retrieve the token address.
const { hash } = await sdk.token.create({
wallet,
name: 'Token name',
symbol: 'TOK',
decimals: 18,
amount: '1000000',
protocol: 'ETHEREUM',
})
Transfer native and ERC20 tokens.
opts.wallet(Wallet) (required) - wallet transferring tokens.opts.token(string) (required) - token name if it's native, like BNB, CELO, ETH etc, or the token address for ERC20 tokens.opts.amount(string) (required) - token amount to be transferred. (this is in largest unit ether)opts.destination(string) (required) - destination address.
This function returns the hash of this transferring transaction from the blockchain.
// native token
const { hash } = await sdk.token.transfer({
wallet,
protocol: 'POLYGON',
token: 'MATIC',
destination: '0x31ec6686ee15...931b5e12cacb920e',
amount: '17.44',
})
// custom ERC20 token
const { hash } = await sdk.token.transfer({
wallet,
protocol: 'AVAXCCHAIN',
token: '0x1b5e12ca...1b5e12ca',
destination: '0x31ec6686ee15...07A931b5e12cacb920e',
amount: '9.129045',
})
Mint ERC20 tokens.
opts.wallet(Wallet) (required) - wallet minting tokens.opts.token(string) (required) - token address.opts.amount(string) (required) - token amount to be minted. (this is in largest unit ether considering the token decimal places)opts.destination(string) (required) - destination address.
This function returns the hash of this minting transaction from the blockchain.
const { hash } = await sdk.token.mint({
wallet,
protocol: 'CELO',
token: '0x1b5e12ca...1b5e12ca',
destination: '0x31ec6686ee1597...A931b5e12cacb920e',
amount: '40',
})
Burn ERC20 tokens.
opts.wallet(Wallet) (required) - wallet burning tokens.opts.token(string) (required) - token address.opts.amount(string) (required) - token amount to be burnt. (this is in largest unit ether considering the token decimal places)
This function returns the hash of this burning transaction from the blockchain.
const { hash } = await sdk.token.burn({
wallet,
protocol: 'CELO',
token: '0x1b5e12ca...1b5e12ca',
amount: '8.23',
})
Invoke method "approve" from ERC20-compatible smart contracts.
*Obs: This method will only work for the tokens compatible with ERC-20 standard.
opts.wallet(Wallet) (required) - wallet signing transaction that owns the tokens.opts.token(string) (required) - token address.opts.amount(string) (required) - token amount to be approved. (this is in largest unit ether considering the token decimal places)opts.spender(string) (required) - address allowed to withdraw tokens from this wallet.
This function returns the hash of this burning transaction from the blockchain.
const { hash } = await sdk.token.approve({
wallet,
protocol: 'CELO',
token: '0x1b5e12ca...1b5e12ca',
amount: '8.82',
spender: '0x9377888...3342232'
})
Last modified 14d ago