Blockscout

Step-by-step guide for verifying smart contracts on the Filecoin network using the Blockscout explorer's web interface.

The following guide walks you through the process of contract verification using the Blockscout explorer.

Prerequisites

• A deployed smart contract on Filecoin

• Your contract's source code (.sol file)

• Remix IDE for flattening contracts

• Contract deployment details (address, compiler version, license, optimization settings)

Step-by-Step Verification Process

Step 1: Prepare Your Contract Source Code

1. Open Remix IDE:

1. Flatten your contract:

   • In the File Explorer sidebar, under contracts, right-click on your contract

   • Select Flatten from the menu

   • This creates a <contract-name>_flattened.sol file with all dependencies included

2. Verify contract details:

   • Ensure the license and Solidity version match your original contract

   • Click Save to save the flattened contract

3. Download the flattened contract:

   • Right-click on <contract-name>_flattened.sol

   • Select Download to save the file locally

4. Gather required information:

   • Contract deployment address

   • Contract license type (optional)

   • Solidity compiler version used for deployment

   • Optimization settings (enabled/disabled and runs count)

Step 2: Submit for Verification

1. Access Blockscout verification page:

   • Navigate to the Blockscout Contract Verification page

2. Fill in contract information:

   • Enter your contract's deployment address

   • Select the appropriate license type (optional)

   • Choose verification method: Solidity (Single file)

   • Enter the compiler version used for deployment

   • Paste the source code from your <contract-name>_flattened.sol file

   • Configure the Optimization enabled checkbox to match your deployment settings

1. Submit for verification:

   • Click Verify & Publish to submit your contract

Step 3: Verification Complete

Upon successful verification, Blockscout will display a success message and redirect you to your verified contract dashboard where you can view the source code and interact with your contract.

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