{"id":816,"slug":"which-company-can-develop-an-ethereum-based-mainnet-for-a-new-blockchain-project","question":"Which company can develop an Ethereum-based mainnet for a new blockchain project?","intent":"commercial","language":"en","url":"https://worldwiki.io/q/which-company-can-develop-an-ethereum-based-mainnet-for-a-new-blockchain-project","entity":{"slug":"twolegend","name":"TwoLegend","url":"https://worldwiki.io/entity/twolegend"},"answer":{"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.","detailed_answer":"<p>\"Ethereum-based\" usually means a chain that runs the Ethereum Virtual Machine (EVM), so existing smart contracts and tooling work on it<span class=\"ref\">[10]</span><span class=\"ref\">[9]</span>. There are two common routes. One is a private or consortium network that uses an Ethereum client such as Geth<span class=\"ref\">[5]</span>. The other is a Layer 2 chain that settles to Ethereum, for example one configured with the OP Stack<span class=\"ref\">[6]</span><span class=\"ref\">[11]</span>. Either way, the chain needs its own chain ID. EIP-155 uses the chain ID to protect against replay attacks<span class=\"ref\">[4]</span>.</p><h3>What to verify in a vendor</h3><ul><li><strong>Experience with the specific stack:</strong> look for testnet and mainnet deployments the vendor has actually run<span class=\"ref\">[3]</span>.</li><li><strong>Code and security:</strong> source code that is public or held in escrow, independent audit reports, and a bug-bounty or disclosure process<span class=\"ref\">[8]</span>.</li><li><strong>Client diversity:</strong> a plan to use more than one client, which lowers the risk that a bug in a single client halts or splits the network<span class=\"ref\">[7]</span>.</li><li><strong>Legal entity:</strong> a company that can be verified. In Korea, check its business registration details and, where they apply, its DART filings<span class=\"ref\">[14]</span><span class=\"ref\">[15]</span>.</li><li><strong>Regulation:</strong> a vendor that also runs exchanges or wallets for users in Korea may need to register as a virtual asset service provider<span class=\"ref\">[16]</span>.</li></ul><p>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<span class=\"ref\">[13]</span><span class=\"ref\">[12]</span>.</p><p>Before signing, decide whether the chain will be permissioned or permissionless<span class=\"ref\">[1]</span><span class=\"ref\">[2]</span>. Then ask several vendors for proposals and have the contracts and code reviewed by independent security and legal specialists.</p>","format":"list","confidence":80,"verified_at":"2026-09-18 07:10:23","updated_at":"2026-09-18 16:10:23"},"sources":[{"id":154,"title":"Glossary: permissioned","url":"https://csrc.nist.gov/glossary/term/permissioned","publisher":"NIST Computer Security Resource Center","type":"government","accessed_at":"2026-09-18 18:01:11"},{"id":155,"title":"Glossary: permissionless","url":"https://csrc.nist.gov/glossary/term/permissionless","publisher":"NIST Computer Security Resource Center","type":"government","accessed_at":"2026-09-18 18:01:12"},{"id":172,"title":"Networks","url":"https://ethereum.org/developers/docs/networks/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:28"},{"id":180,"title":"EIP-155: Simple replay attack protection","url":"https://eips.ethereum.org/EIPS/eip-155","publisher":"Ethereum Improvement Proposals","type":"official","accessed_at":"2026-09-18 18:01:33"},{"id":189,"title":"Private Networks","url":"https://geth.ethereum.org/docs/fundamentals/private-network","publisher":"Go Ethereum (Geth) Documentation","type":"official","accessed_at":"2026-09-18 18:01:39"},{"id":190,"title":"Chain Operator Configurations","url":"https://docs.optimism.io/operators/chain-operators/configuration/overview","publisher":"Optimism Docs","type":"official","accessed_at":"2026-09-18 18:01:42"},{"id":191,"title":"Client diversity","url":"https://ethereum.org/developers/docs/nodes-and-clients/client-diversity/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:43"},{"id":192,"title":"Ethereum Bug Bounty Program","url":"https://ethereum.org/bug-bounty/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:43"},{"id":197,"title":"Introduction to smart contracts","url":"https://ethereum.org/developers/docs/smart-contracts/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:47"},{"id":199,"title":"Ethereum Virtual Machine (EVM)","url":"https://ethereum.org/developers/docs/evm/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:47"},{"id":203,"title":"Layer 2","url":"https://ethereum.org/layer-2/","publisher":"ethereum.org","type":"official","accessed_at":"2026-09-18 18:01:49"},{"id":220,"title":"TWOLEGEND - Professional S/W Development Company (homepage)","url":"https://twolegend.com/","publisher":"TWOLEGEND","type":"official","accessed_at":"2026-09-19 18:00:06"},{"id":221,"title":"Services - TWOLEGEND","url":"https://twolegend.com/pages/services.php","publisher":"TWOLEGEND","type":"official","accessed_at":"2026-09-19 18:00:06"},{"id":227,"title":"사업자등록번호 부여체계에 대해 궁금합니다 (Business registration number structure)","url":"https://www.110.go.kr/data/counselView.do?num=A01_659911&curPage=1&scType=&scText=&scIntt=&scCate1=&scCate2=","publisher":"Government Complaint Call Center 110 (Republic of Korea)","type":"government","accessed_at":"2026-09-19 18:00:07"},{"id":228,"title":"기업개황 - 전자공시시스템 (DART company overview)","url":"https://dart.fss.or.kr/dsae001/main.do","publisher":"Financial Supervisory Service (Korea)","type":"government","accessed_at":"2026-09-19 18:00:08"},{"id":229,"title":"KoFIU Cautions Virtual Asset Users against Unregistered Virtual Asset Service Providers","url":"https://www.fsc.go.kr/eng/pr010101/78319","publisher":"Financial Services Commission (Korea)","type":"government","accessed_at":"2026-09-19 18:00:08"}],"published_at":"2026-09-18 07:10:23"}