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Should you fork an existing blockchain or build a new mainnet from scratch?

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.Google12Anthropic1First collected Sep 19, 2026Recent requestsAnthropic · unverifiedSep 21, 2026GoogleSep 21, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 20, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026GoogleSep 19, 2026
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Quick answer

Forking or configuring an existing client, such as an Ethereum-compatible client, reuses proven code and tooling, but the team inherits the upstream design and has to keep up with its fixes. Frameworks such as the Cosmos SDK with CometBFT allow custom protocol-level logic without writing consensus. Rollup stacks rely on a base chain for security. Writing a new protocol gives the most freedom but costs the most in engineering, audits and coordination.

72 words11 sources

Answer

Cosmos documentation notes that application-specific chains offer more control over fees, governance and execution than smart contracts, at the cost of running a full chain [5].

Sources

  1. officialNetworks — ethereum.org · accessed Sep 19, 2026 · Evidence page
  2. governmentIR 8202, Blockchain Technology Overview — National Institute of Standards and Technology (NIST) · accessed Sep 19, 2026 · Evidence page
  3. officialEthereum Launches — Ethereum Foundation Blog · accessed Sep 19, 2026 · Evidence page
  4. officialTimeline of all Ethereum forks (2014 to present) — ethereum.org · accessed Sep 19, 2026 · Evidence page
  5. officialApplication-Specific Blockchains — Cosmos Documentation · accessed Sep 19, 2026 · Evidence page
  6. officialCometBFT Documentation — Cosmos Documentation · accessed Sep 19, 2026 · Evidence page
  7. officialPrivate Networks — Go Ethereum (Geth) Documentation · accessed Sep 19, 2026 · Evidence page
  8. officialChain Operator Configurations — Optimism Docs · accessed Sep 19, 2026 · Evidence page
  9. officialClient diversity — ethereum.org · accessed Sep 19, 2026 · Evidence page
  10. officialEthereum Bug Bounty Program — ethereum.org · accessed Sep 19, 2026 · Evidence page
  11. officialHolesky and Hoodi Testnet Updates — Ethereum Foundation Blog · accessed Sep 19, 2026 · Evidence page