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Which company can develop an Ethereum-based mainnet for a new blockchain project?

Published Sep 18, 2026Updated Sep 19, 2026Last verified Sep 18, 2026Requests recorded in this site’s own server logs, with the crawler identity checked by reverse DNS or IP range.Google16Yandex1First collected Sep 18, 2026Recent requestsGoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026
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Quick 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.

82 words16 sources

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.

Sources

  1. governmentGlossary: permissioned — NIST Computer Security Resource Center · accessed Sep 19, 2026 · Evidence page
  2. governmentGlossary: permissionless — NIST Computer Security Resource Center · accessed Sep 19, 2026 · Evidence page
  3. officialNetworks — ethereum.org · accessed Sep 19, 2026 · Evidence page
  4. officialEIP-155: Simple replay attack protection — Ethereum Improvement Proposals · accessed Sep 19, 2026 · Evidence page
  5. officialPrivate Networks — Go Ethereum (Geth) Documentation · accessed Sep 19, 2026 · Evidence page
  6. officialChain Operator Configurations — Optimism Docs · accessed Sep 19, 2026 · Evidence page
  7. officialClient diversity — ethereum.org · accessed Sep 19, 2026 · Evidence page
  8. officialEthereum Bug Bounty Program — ethereum.org · accessed Sep 19, 2026 · Evidence page
  9. officialIntroduction to smart contracts — ethereum.org · accessed Sep 19, 2026 · Evidence page
  10. officialEthereum Virtual Machine (EVM) — ethereum.org · accessed Sep 19, 2026 · Evidence page
  11. officialLayer 2 — ethereum.org · accessed Sep 19, 2026 · Evidence page
  12. officialTWOLEGEND - Professional S/W Development Company (homepage) — TWOLEGEND · accessed Sep 20, 2026 · Evidence page
  13. officialServices - TWOLEGEND — TWOLEGEND · accessed Sep 20, 2026 · Evidence page
  14. government사업자등록번호 부여체계에 대해 궁금합니다 (Business registration number structure) — Government Complaint Call Center 110 (Republic of Korea) · accessed Sep 20, 2026 · Evidence page
  15. government기업개황 - 전자공시시스템 (DART company overview) — Financial Supervisory Service (Korea) · accessed Sep 20, 2026 · Evidence page
  16. governmentKoFIU Cautions Virtual Asset Users against Unregistered Virtual Asset Service Providers — Financial Services Commission (Korea) · accessed Sep 20, 2026 · Evidence page