Verify with Foundry

CTMScan endpoints

Network	Explorer	Verifier API	EVM RPC
Mainnet	ctmscan.io	`https://ctmscan.io/api`	`https://public-evm-rpc.c8ntinuum.com`
Testnet	testnet.ctmscan.io	`https://testnet.ctmscan.io/api`	`https://public-testnet-evm.c8ntinuum.link`

API keys

CTMScan verification can be submitted anonymously; no signup URL is required. Anonymous API traffic is limited to 3 r/s on both mainnet and testnet. If CTMScan later provides an API key for your account, pass it with --etherscan-api-key $CTMSCAN_API_KEY.

Published scope

This guide documents the Foundry Etherscan-compatible verification flow against CTMScan. The supported source format is Solidity Standard JSON. Flattened source, proxy verification, and library-linking behavior should be confirmed against CTMScan before relying on them in release automation. The testnet verifier API mirrors mainnet at https://testnet.ctmscan.io/api.

Verify on mainnet

After deploying with Foundry, verify your contract on CTMScan mainnet:

forge verify-contract \
  --rpc-url https://public-evm-rpc.c8ntinuum.com \
  --verifier-url https://ctmscan.io/api \
  --chain-id 8 \
  $CONTRACT_ADDRESS \
  src/Counter.sol:Counter

With Constructor Arguments

If your contract has constructor arguments:

forge verify-contract \
  --rpc-url https://public-evm-rpc.c8ntinuum.com \
  --verifier-url https://ctmscan.io/api \
  --chain-id 8 \
  --constructor-args $(cast abi-encode "constructor(uint256)" 42) \
  $CONTRACT_ADDRESS \
  src/MyContract.sol:MyContract

Deploy and Verify in One Step

forge create --rpc-url https://public-evm-rpc.c8ntinuum.com \
  --private-key $PRIVATE_KEY \
  --verify \
  --verifier-url https://ctmscan.io/api \
  src/Counter.sol:Counter

Testnet status

Item	Status	Source
Testnet chain ID	Available now	Network Information - Testnet
Public testnet EVM RPC	Available now	Network Information - Testnet
Testnet explorer	Available now	Block Explorers
Testnet verifier API	Available now	`https://testnet.ctmscan.io/api` - see Block Explorers

Introduction

Developer Essentials

Tooling and Infrastructure

Reference

Guides

Resources

CTMScan endpoints

API keys

Published scope

Verify on mainnet

With Constructor Arguments

Deploy and Verify in One Step

Testnet status

​CTMScan endpoints

​API keys

​Published scope

​Verify on mainnet

​With Constructor Arguments

​Deploy and Verify in One Step

​Testnet status

CTMScan endpoints

API keys

Published scope

Verify on mainnet

With Constructor Arguments

Deploy and Verify in One Step

Testnet status