How to Deploy and Verify a Hedera Smart Contract with Foundry
Discover how to deploy and automatically verify your Hedera smart contract. Learn how to verify a pre-existing contract and check a contracts verification status.
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Get started
Set up project
To follow along, start with the main branch, which is the default branch of this repository. This gives you the initial state from which you can follow along with the steps as described in the tutorial.
forge manages dependencies by using git submodules. Clone the following project and pass --recurse-submodules to the git clone command to automatically initialize and update the submodule in the repository.
In your terminal, enter the projects root directory
cd foundry-deploy-and-verify-smart-contract
Next, run the following command to install the dependencies
forge install
Obtain your ECDSA Hex Encoded Private Key
Keep your private key accessible as it will be needed in the following steps.
Choose your Testnet RPC_URL
Keep the Testnet RPC_URL accessible as it will be needed in the next step.
Deploy and Automatically Verify Your Contract on Hedera Testnet
In your terminal, replace the value of "HEX_Encoded_Private_Key" with your ECDSA account's private key and replace "RPC_URL" with a Testnet URL in the command below:
Sourcify is a Solidity source code and metadata verification tool.
Hashscan is a Hedera Mirror Node Explorer that integrates with Sourcify to provide a verification service located at https://server-verify.hashscan.io.
You should see output similar to the following:
[⠒] Compiling...
[⠔] Compiling 22 files with 0.8.23
[⠘] Solc 0.8.23 finished in 3.43s
Compiler run successful!
Deployer: 0xdfAb7899aFaBd146732c84eD83250889C40d6A00
Deployed to: 0x3b096B1c56A48119CB4fe140F1D26196590aF46C
Transaction hash: 0x32f6a03b569a934d8d1e20bb29a20fe1008f0b3bf9ab41e1f26ed88bb28b3c05
Starting contract verification...
Waiting for sourcify to detect contract deployment...
Start verifying contract `0x3b096B1c56A48119CB4fe140F1D26196590aF46C` deployed on 296
Submitting verification for [TodoList] "0x3b096B1c56A48119CB4fe140F1D26196590aF46C".
Contract successfully verified
Open the Hashscan explorer in your browser by copying the Deployed to EVM address and replacing <Deployed_Contract_EVM_Address> in the link below:
Checking verification status on 296
Contract successfully verified
Complete
Congratulations, on completing the tutorial on how to verify smart contracts on Hedera Testnet.
You have learned how to:
If you haven't to work with git, you may wish use this command instead:
In order to deploy your smart contract you will need access to your ECDSA hex encoded private key. You can find your ECDSA hex encoded private key by logging into .
If you need to create a Hedera account, follow the tutorial.