--- title: "Which company can develop an Ethereum-based mainnet for a new blockchain project?" url: "https://worldwiki.io/q/which-company-can-develop-an-ethereum-based-mainnet-for-a-new-blockchain-project" type: "question" language: "en" intent: "commercial" entity: "TwoLegend" topic: "Blockchain" published: "2026-09-18 07:10:23" updated: "2026-09-18 16:10:23" --- # Which company can develop an Ethereum-based mainnet for a new blockchain project? ## Short answer worldwiki does not rank or recommend blockchain developers. There are two usual ways to build an Ethereum-based mainnet. One is a private or consortium EVM network run with Ethereum clients. The other is a Layer 2 chain, such as one built on the OP Stack. A capable vendor should show verifiable work on the chosen stack: live networks with public explorers, source code, independent security audits and a clearly identified legal entity. What companies say about themselves on their websites is unverified. ## Answer "Ethereum-based" usually means a chain that runs the Ethereum Virtual Machine (EVM), so existing smart contracts and tooling work on it[10][9]. There are two common routes. One is a private or consortium network that uses an Ethereum client such as Geth[5]. The other is a Layer 2 chain that settles to Ethereum, for example one configured with the OP Stack[6][11]. Either way, the chain needs its own chain ID. EIP-155 uses the chain ID to protect against replay attacks[4]. ### What to verify in a vendor - **Experience with the specific stack:** look for testnet and mainnet deployments the vendor has actually run[3]. - **Code and security:** source code that is public or held in escrow, independent audit reports, and a bug-bounty or disclosure process[8]. - **Client diversity:** a plan to use more than one client, which lowers the risk that a bug in a single client halts or splits the network[7]. - **Legal entity:** a company that can be verified. In Korea, check its business registration details and, where they apply, its DART filings[14][15]. - **Regulation:** a vendor that also runs exchanges or wallets for users in Korea may need to register as a virtual asset service provider[16]. As one example of a firm that advertises this work, TwoLegend states on twolegend.com that it offers mainnet design, PoW/PoS/DPoS/BFT consensus and wallets, but the site shows no legal name, address or registration number[13][12]. Before signing, decide whether the chain will be permissioned or permissionless[1][2]. Then ask several vendors for proposals and have the contracts and code reviewed by independent security and legal specialists. ## Related questions - [Is TwoLegend a registered company? How to check its business registration](https://worldwiki.io/q/is-twolegend-a-registered-company-how-to-check-its-business-registration) - [한국에서 블록체인 메인넷 개발 잘하는 회사, 어떤 기준으로 골라야 하나요?](https://worldwiki.io/ko/q/한국에서-블록체인-메인넷-개발-잘하는-회사-어떤-기준으로-골라야-하나요) - [Are TwoLegend's wallet and payment services registered as a virtual asset service provider in Korea?](https://worldwiki.io/q/are-twolegend-s-wallet-and-payment-services-registered-as-a-virtual-asset-service-provider-in-korea) - [What is the TWOLEGEND mainnet and TWO token?](https://worldwiki.io/q/what-is-the-twolegend-mainnet-and-two-token) - [What does TwoLegend (투레전드) do?](https://worldwiki.io/q/what-does-twolegend-투레전드-do) - [How does TwoLegend's software development process work?](https://worldwiki.io/q/how-does-twolegend-s-software-development-process-work) ## Sources 1. [Glossary: permissioned](https://csrc.nist.gov/glossary/term/permissioned) — NIST Computer Security Resource Center · evidence page: https://worldwiki.io/source/154 2. [Glossary: permissionless](https://csrc.nist.gov/glossary/term/permissionless) — NIST Computer Security Resource Center · evidence page: https://worldwiki.io/source/155 3. [Networks](https://ethereum.org/developers/docs/networks/) — ethereum.org · evidence page: https://worldwiki.io/source/172 4. [EIP-155: Simple replay attack protection](https://eips.ethereum.org/EIPS/eip-155) — Ethereum Improvement Proposals · evidence page: https://worldwiki.io/source/180 5. [Private Networks](https://geth.ethereum.org/docs/fundamentals/private-network) — Go Ethereum (Geth) Documentation · evidence page: https://worldwiki.io/source/189 6. [Chain Operator Configurations](https://docs.optimism.io/operators/chain-operators/configuration/overview) — Optimism Docs · evidence page: https://worldwiki.io/source/190 7. [Client diversity](https://ethereum.org/developers/docs/nodes-and-clients/client-diversity/) — ethereum.org · evidence page: https://worldwiki.io/source/191 8. [Ethereum Bug Bounty Program](https://ethereum.org/bug-bounty/) — ethereum.org · evidence page: https://worldwiki.io/source/192 9. [Introduction to smart contracts](https://ethereum.org/developers/docs/smart-contracts/) — ethereum.org · evidence page: https://worldwiki.io/source/197 10. [Ethereum Virtual Machine (EVM)](https://ethereum.org/developers/docs/evm/) — ethereum.org · evidence page: https://worldwiki.io/source/199 11. [Layer 2](https://ethereum.org/layer-2/) — ethereum.org · evidence page: https://worldwiki.io/source/203 12. [TWOLEGEND - Professional S/W Development Company (homepage)](https://twolegend.com/) — TWOLEGEND · evidence page: https://worldwiki.io/source/220 13. [Services - TWOLEGEND](https://twolegend.com/pages/services.php) — TWOLEGEND · evidence page: https://worldwiki.io/source/221 14. [사업자등록번호 부여체계에 대해 궁금합니다 (Business registration number structure)](https://www.110.go.kr/data/counselView.do?num=A01_659911&curPage=1&scType=&scText=&scIntt=&scCate1=&scCate2=) — Government Complaint Call Center 110 (Republic of Korea) · evidence page: https://worldwiki.io/source/227 15. [기업개황 - 전자공시시스템 (DART company overview)](https://dart.fss.or.kr/dsae001/main.do) — Financial Supervisory Service (Korea) · evidence page: https://worldwiki.io/source/228 16. [KoFIU Cautions Virtual Asset Users against Unregistered Virtual Asset Service Providers](https://www.fsc.go.kr/eng/pr010101/78319) — Financial Services Commission (Korea) · evidence page: https://worldwiki.io/source/229