Blockchain Mainnet
別名: mainnet, main network, 메인넷
A blockchain mainnet is the live, production network of a blockchain where real transactions are processed and permanently recorded.
What is the difference between mainnet and testnet?
A mainnet is a blockchain's live production network, where tokens and transactions have real economic value. A testnet is a separate network with the same or similar software, used to test applications and protocol upgrades "in a production-like environment before deployment to Mainnet." Testnet tokens usually come free from faucets and are meant to have no value. Testnets can also be retired or reset, while a mainnet is meant to run indefinitely.
主要な事実
| 項目 | 値 | 出典 |
|---|---|---|
| Definition (Ethereum documentation) | The primary public production blockchain, where actual-value transactions occur on the distributed ledger時点 2026年9月18日 | [2]officialNetworksethereum.org |
| Value of testnet tokens | ETH on testnets is meant to have no real value and is usually handed out free by faucets; markets have sometimes formed for scarce testnet ETH時点 2026年9月18日 | [2]officialNetworksethereum.org |
| Recommended Ethereum testnets | Sepolia (default for application development); Hoodi (validator and staking tests, open validator set)時点 2026年9月18日 | [2]officialNetworksethereum.org |
| Bitcoin mainnet genesis block date | 2009-01-03 (block 0; hash 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f) | [3]officialGenesis blockBitcoin Wiki |
| Ethereum mainnet launch (genesis block mined) | 2015-07-30 | [4]officialHistory of Ethereum: founder, launch and ownershipethereum.org (Ethereum Foundation) |
| Ethereum mainnet chain ID | 1 (EIP-155 chain IDs separate networks to prevent transactions being replayed on another chain) | [5]officialEIP-155: Simple replay attack protectionEthereum Improvement Proposals |
| Example of a major mainnet upgrade | Ethereum's Merge (switch to proof-of-stake) ran on mainnet on 2022-09-15, after testnet merges such as Ropsten時点 2022年9月15日 | [6]officialThe Mergeethereum.org |
| Release stage | Production (after devnet and testnet) | [1]officialEthereum networksethereum.org |
| Bitcoin testnet4 (BIP 94) | Genesis block dated 2024-05-03. Replaced testnet3, which suffered difficulty-reset 'block storms' and whose coins had gained trading value. Same rules as mainnet with three exceptions時点 2024年5月27日 | [7]officialBIP 94: Testnet 4Bitcoin Improvement Proposals (bitcoin/bips) |
| How protocol changes happen | Through soft forks and hard forks, which NIST IR 8202 covers among blockchain concepts時点 2018年10月3日 | [8]governmentIR 8202, Blockchain Technology OverviewNational Institute of Standards and Technology (NIST) |
概要
Mainnet is the production stage of a blockchain network, as opposed to testnets used for development and testing. Assets on mainnet carry real economic value, and protocol changes require coordinated upgrades across node operators.
参考文献
独立出典比率 38% (3/8) · 自社資料 5- レベル C · official公式主張Ethereum networks — ethereum.org · 閲覧日 2026年11月9日 · 根拠ページ
- レベル C · official公式主張Networks — ethereum.org · 閲覧日 2026年11月10日 · 根拠ページ
- レベル C · officialGenesis block — Bitcoin Wiki · 閲覧日 2026年11月8日 · 根拠ページ
- レベル C · official公式主張History of Ethereum: founder, launch and ownership — ethereum.org (Ethereum Foundation) · 閲覧日 2026年11月9日 · 根拠ページ
- レベル C · official公式主張EIP-155: Simple replay attack protection — Ethereum Improvement Proposals · 閲覧日 2026年11月8日 · 根拠ページ
- レベル C · official公式主張The Merge — ethereum.org · 閲覧日 2026年11月10日 · 根拠ページ
- レベル C · officialBIP 94: Testnet 4 — Bitcoin Improvement Proposals (bitcoin/bips) · 閲覧日 2026年11月9日 · 根拠ページ
- レベル A · governmentIR 8202, Blockchain Technology Overview — National Institute of Standards and Technology (NIST) · 閲覧日 2026年10月7日 · 根拠ページ