Access Tokens from Metamask
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Metamask is a browser-based Ethereum wallet. Beside showing ether the native currency, Metamask can also show information about deployed Token. In this deck we will demonstrate how to add token in Metamask
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Access Tokens from Metamask
- 1. 11. Access Token using Metamask KC Tam Reach KC on LinkedIn: https://www.linkedin.com/in/ktam1/
- 2. Objective We have deployed an ERC20 Token Contract in TestRPC. In this section we access this token using Metamask wallet.
- 3. Metamask Wallet An Ethereum wallet in browser plug-in form factor We can create new addresses or import existing accounts into Metamask Beside native ethers, Metamask supports displaying ERC20 tokens and get the balance of that account What we need is to set the right Ethereum environment and deployed token contract address
- 4. Run TestRPC Keep a copy of a private key on accounts[0] as we import accounts[0] to Metamask for processing token (e1bd5b…).
- 5. As before, paste Contract in Remix Editor and select Web3 Provider environment (http://localhost:8545). Now the contract is ready to deploy.
- 6. This is the deployed token contract address. We copy this address for later use.
- 7. Before login Metamask, choose Localhost:8545, which is our TestRPC ethereum network. The first account is created when metamask is first launched. We are importing the account created from TestRPC.
- 8. Paste the private key of accounts[0] from TestRPC (e1bd5b…)
- 9. Upon successful import, we now have a new account. The ethers shown is slightly less than 100 ethers. Remember every account created in TestRPC comes with 100 ethers. The difference is used when deploying the Token Contract.
- 10. Go to TOKENS tag, and we see no tokens found currently. Press ADD TOKEN We paste the deployed Token Contract Address. The token symbol and decimals are immediately and correctly shown. This is taken from the deployed Token Contract Address.
- 11. Now in Metamask wallet, we see 10,000 POPCOINs in this account 0x0B2F… Remember all the 10,000 tokens is owned by the deployer (this account).
- 12. We transfer from this account 1,000 token to another account.
- 13. Now in Metamask wallet, only 9,000 POPCOINs remains in this account.
- 14. Summary In this section we see how to use Metamask to get deployed token information. Metamask can correctly display the token information as the token provides ERC20 interface.