Blockchain
Mainnet
The primary, live blockchain network where real transactions occur and have monetary value.
Last Updated
2026-03-29
Related Concepts
What is Mainnet?
Mainnet is the live, primary version of a blockchain where real transactions occur and assets have actual monetary value distinct from testnets used for development.
How does Mainnet work?
- Developers test contracts on testnet first.
- Once ready, contracts are deployed to mainnet.
- Transactions are real, permanent, and cost gas fees.
- The full network of nodes and validators secures the chain.
Why does Mainnet matter?
Mainnet is where real economic activity happens. Because transactions are irreversible and involve real capital, bugs or exploits cause permanent financial loss.
Key features of Mainnet
- Live blockchain with real monetary value
- Permanent, irreversible transactions
- Actual gas fee costs
- Secured by the full validator set
Examples of Mainnet
Ethereum mainnet hosts billions in DeFi value. Bitcoin mainnet processes real BTC transfers.
Every blockchain has exactly one mainnet all other networks are testnets or separate chains.