fix: configure etherscan verification for Base deployments

- Add [etherscan] config to foundry.toml with BASESCAN_API_KEY
- Update deploy.yml to use --etherscan-api-key flag instead of blockscout
- Add -vvvv for verbose verification logs
- Simplify RPC URL setup (remove blockscout-specific verifier URLs)

Author: alexreviaka

.github/workflows/deploy.yml

@@ -58,12 +58,8 @@ jobs:
         run: |
           if [ "${{ github.event.inputs.network }}" = "base_sepolia" ]; then
             echo "rpc_url=${{ secrets.BASE_SEPOLIA_RPC }}" >> $GITHUB_OUTPUT
-            echo "verifier=blockscout" >> $GITHUB_OUTPUT
-            echo "verifier_url=https://base-sepolia.blockscout.com/api" >> $GITHUB_OUTPUT
           else
             echo "rpc_url=${{ secrets.BASE_MAINNET_RPC }}" >> $GITHUB_OUTPUT
-            echo "verifier=blockscout" >> $GITHUB_OUTPUT
-            echo "verifier_url=https://base.blockscout.com/api" >> $GITHUB_OUTPUT
           fi
 
       - name: ${{ github.event.inputs.operation == 'deploy' && 'Deploy' || 'Upgrade' }} to ${{ github.event.inputs.network }}
@@ -90,8 +86,8 @@ jobs:
               --rpc-url "${{ steps.set_rpc.outputs.rpc_url }}" \
               --broadcast \
               --verify \
-              --verifier "${{ steps.set_rpc.outputs.verifier }}" \
-              --verifier-url "${{ steps.set_rpc.outputs.verifier_url }}"
+              --etherscan-api-key "${{ secrets.BASESCAN_API_KEY }}" \
+              -vvvv
           fi
         env:
           PRIVATE_KEY: ${{ secrets.PRIVATE_KEY }}

foundry.toml

@@ -12,6 +12,10 @@ evm_version = "cancun"
 base_sepolia = "${BASE_SEPOLIA_RPC}"
 base_mainnet = "${BASE_MAINNET_RPC}"
 
+[etherscan]
+base_sepolia = { key = "${BASESCAN_API_KEY}" }
+base_mainnet = { key = "${BASESCAN_API_KEY}" }
+
 
 [fmt]
 line_length = 120