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Analyzing Market
Glossary

Testnet

A testnet (test network) is a parallel version of a blockchain used for development and testing. Its coins are free and carry no real value, so mistakes are harmless.

How it works

A testnet mirrors how the real network (the mainnet) behaves, letting developers deploy and try out smart contracts and applications under realistic conditions. Test coins are usually handed out freely through “faucets.” When code has been proven on the testnet, it can be released to mainnet, where real value is at stake.

Why it matters

Testnets make it possible to find and fix bugs before real funds are involved, which is essential given that mainnet transactions and contract flaws are permanent. They are a standard, low-risk step in building anything on a blockchain.

Example

A developer deploys a new contract to a testnet first, then to mainnet once it works as intended.

Testnet: Frequently Asked Questions

Do testnet coins have any real value?
No. Testnet coins are free and carry no monetary value; they exist only so developers can experiment without risking real funds. They are typically handed out through faucets that distribute them on request. Because nothing is at stake, mistakes made on a testnet are harmless.
Why do developers use a testnet before mainnet?
Testnets let developers deploy and try out smart contracts and applications under realistic conditions before any real value is involved. This makes it possible to find and fix bugs early, which is essential given that mainnet transactions and contract flaws are permanent. Testing first is a standard, low-risk step in building on a blockchain.
How does a testnet relate to the mainnet?
A testnet mirrors how the real network, the mainnet, behaves, so code can be validated in a faithful environment. Once a contract or application works as intended on the testnet, it can be released to mainnet, where transactions involve real value and cannot be reversed.
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