Unlock the Power of JSON-RPC with Metamask - Demo Included!

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Unlock the Power of JSON-RPC with Metamask - Demo Included!

Table of Contents:

  1. Introduction
  2. Configuring Metamask Wallet for Hedera
  3. Checking Account Balances with Hash Scan
  4. Sending HBAR from Alice to Bob
  5. Adding TFT2 Tokens to Wallets
  6. Sending TFT2 Tokens from Alice to Bob
  7. Using a Voting DApp on Hedera
  8. Conclusion

Introduction

In this article, we will explore the capabilities of the JSON RPC Relay and its role as an on-ramp to the Hedera Hashgraph public ledger for users of Ethereum and other Ethereum compatible networks. We will demonstrate various transactions and interactions using the relay, such as transferring HBAR crypto, transferring fungible tokens (TFT2), and using a voting DApp that interacts with Hedera smart contracts.

Configuring Metamask Wallet for Hedera

Before getting started with the JSON RPC Relay, Alice needs to set up her Metamask wallet to work with Hedera. This involves adding a new network in Metamask and configuring the necessary parameters such as the RPC URL and chain ID. Once configured, Alice's Metamask wallet will be able to Interact with the Hedera network seamlessly.

Checking Account Balances with Hash Scan

To verify the account balances of Alice and Bob on the Hedera network, we can use a network explorer called Hash Scan. By entering the account IDs into the search field, we can see the HBAR and TFT2 token balances associated with each account. This provides transparency and visibility into the Current holdings of both Alice and Bob.

Sending HBAR from Alice to Bob

Alice, feeling generous, decides to send 99 HBAR to Bob. Using her Metamask wallet, she initiates a transaction, selecting Bob as the recipient and specifying the transfer amount. The transaction is then confirmed and signed by Metamask before being sent to the JSON RPC Relay. Within a matter of seconds, the transaction is completed, and both Alice and Bob's wallets reflect the updated balances.

Pros:

  • Hassle-free transfer of HBAR between accounts
  • Near-instantaneous transaction completion

Cons:

  • Requires configuration of Metamask wallet for Hedera compatibility

Adding TFT2 Tokens to Wallets

In order to work with TFT2 tokens, both Alice and Bob need to add the token Type to their respective Metamask wallets. This can be done by importing the token's contract address into the wallet's asset settings. Once added, the wallets will display the TFT2 token type, along with its decimal information.

Sending TFT2 Tokens from Alice to Bob

Following a similar process to the HBAR transfer, Alice decides to send 1,000 TFT2 tokens to Bob. She selects Bob as the recipient, specifies the token amount, reviews the transaction details, and confirms the transfer. Metamask then signs the transaction and sends it to the JSON RPC Relay, which forwards it to the Hedera network. After a few seconds, the transfer is confirmed, and both Alice and Bob's wallets reflect the updated token balances.

Using a Voting DApp on Hedera

Alice decides to participate in a voting DApp on Hedera to Show her support for her favorite user's account. The DApp, originally developed for Ethereum, utilizes web3.js for transaction creation and Metamask for signing and submitting transactions. By connecting her wallet to the DApp, Alice can initiate voting, modify her vote, and verify the voting status via smart contract interactions on Hedera. Metamask plays a crucial role in signing and sending the transactions through the JSON RPC Relay to Hedera.

Conclusion

The JSON RPC Relay serves as a bridge between Ethereum dApps and the Hedera network, enabling the deployment of standard EVM smart contracts on Hedera. By leveraging tools like Metamask and standard Ethereum libraries, users can seamlessly interact with Hedera accounts and smart contracts. The relay facilitates transactions such as HBAR transfers and fungible token transfers, making it easier for users to access the features and benefits of the Hedera Hashgraph network.


Highlights:

  • The JSON RPC Relay acts as an on-ramp to the Hedera network for Ethereum users.
  • Users can configure their Metamask wallets to work with Hedera by adding a new network.
  • Hash Scan provides visibility into Hedera account balances.
  • Transferring HBAR between accounts is simple and efficient using Metamask and the JSON RPC Relay.
  • TFT2 tokens can be added to Metamask wallets for seamless token transfers.
  • Voting DApps on Hedera utilize smart contract interactions via Metamask and the JSON RPC Relay.

FAQ:

Q: What is the JSON RPC Relay? A: The JSON RPC Relay is a tool that allows Ethereum users to interact with the Hedera Hashgraph network by deploying smart contracts and performing transactions.

Q: How do I configure my Metamask wallet for Hedera? A: You can configure your Metamask wallet for Hedera by adding a new network with the RPC URL and chain ID specific to Hedera.

Q: Can I transfer HBAR between Metamask wallets using the JSON RPC Relay? A: Yes, you can transfer HBAR between Metamask wallets by initiating a transaction, signing it with Metamask, and sending it through the JSON RPC Relay to the Hedera network.

Q: How can I check my account balance on the Hedera network? A: You can use a network explorer like Hash Scan and enter your account ID to view your HBAR and token balances.

Q: Can I participate in voting DApps on Hedera using Metamask? A: Yes, you can use Metamask to connect your wallet to voting DApps on Hedera and perform actions such as voting and checking your vote status.

Q: What other features does the JSON RPC Relay support? A: The JSON RPC Relay supports a range of transaction types, including the transfer of fungible tokens and interactions with smart contracts on the Hedera network.

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