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What does mainnet launch mean in crypto?

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.Google19Yandex1First collected Sep 18, 2026Recent requestsGoogleSep 21, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026
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Quick answer

A mainnet launch is when a blockchain project starts its production network. This usually means creating a genesis block, and from that point transactions carry real value. Some projects that first issued tokens on another chain, such as EOS with ERC-20 tokens on Ethereum, asked holders to swap or register before launch. A mainnet launch is a technical milestone. It does not show that a project is secure or financially sound.

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Answer

Bitcoin's genesis block is dated 3 January 2009 [8], and Ethereum's Frontier mainnet went live on 30 July 2015 [9]. Before the EOS mainnet launch in June 2018, holders were warned that ERC-20 EOS tokens not swapped would be frozen .

Sources

  1. academicBlockchain Technology Overview (NISTIR 8202) — National Institute of Standards and Technology (via arXiv) · accessed Sep 19, 2026 · Evidence page
  2. officialNetworks — ethereum.org · accessed Sep 19, 2026 · Evidence page
  3. officialHolesky and Hoodi Testnet Updates — Ethereum Foundation Blog · accessed Sep 19, 2026 · Evidence page
  4. officialPectra Mainnet Announcement — Ethereum Foundation Blog · accessed Sep 19, 2026 · Evidence page
  5. officialHolešky Testnet Shutdown Announcement — Ethereum Foundation Blog · accessed Sep 19, 2026 · Evidence page
  6. officialSolana Clusters — Solana Foundation · accessed Sep 19, 2026 · Evidence page
  7. officialUsing a test network — Bitcoin Core Onboarding · accessed Sep 19, 2026 · Evidence page
  8. officialGenesis block — Bitcoin Wiki · accessed Sep 19, 2026 · Evidence page
  9. newsEthereum Launches Long-Awaited Decentralized App Network — CoinDesk · accessed Sep 19, 2026 · Evidence page
  10. officialEIP-155: Simple replay attack protection — Ethereum Improvement Proposals · accessed Sep 19, 2026 · Evidence page
  11. officialThe Merge — ethereum.org · accessed Sep 19, 2026 · Evidence page
  12. officialTaproot — Bitcoin Optech · accessed Sep 19, 2026 · Evidence page