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Verifying a smart contract allows developers to review your code from within the CeloScan Block Explorer

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Prerequisites

Project must be setup using Foundry

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Add Celo configuration in foundry.toml

Add the below given configuration to the foundry.toml file at the root level of your project. 
[etherscan]
celo-alfajores = { key = "${CELOSCAN_API_KEY}", url = "https://api-alfajores.celoscan.io/api"}
celo = { key = "${CELOSCAN_API_KEY}", url = "https://api.celoscan.io/api"}
Make sure to also have Celo RPC configuration in foundry.toml file, here it is: 
[rpc_endpoints]
celo-alfajores = "https://alfajores-forno.celo-testnet.org"
celo = "https://forno.celo.org"

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Verifying Contracts

Use the following command For Alfajores Testnet: 
forge verify-contract --chain-id celo-alfajores <contract_address> <contract_location> --watch
For Celo Mainnet: 
forge verify-contract --chain-id celo <contract_address> <contract_location> --watch
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