# Consensus

## Definition

Consensus is the set of rules and mechanisms a blockchain network uses to agree on valid state, transaction ordering and which history participants should accept.

## What it means in practice

Bitcoin uses Proof of Work, while Ethereum uses Proof of Stake; different systems make different security and finality trade-offs.

## How this concept appears in Terenval Wallet

Terenval relies on the consensus of each supported network for transaction validity and confirmation rather than deciding ledger state itself.

**Important:** A wallet cannot make a transaction final if the underlying network has not accepted it.

**[Install Terenval Wallet](https://wallet.terenval.com/?lang=en)**

## Related terms

- [proof of work](https://wallet.terenval.com/glossary/proof-of-work/)
- [proof of stake](https://wallet.terenval.com/glossary/proof-of-stake/)
- [finality](https://wallet.terenval.com/glossary/finality/)
- [Blockchain node](https://wallet.terenval.com/glossary/node/)
- [Blockchain](https://wallet.terenval.com/glossary/blockchain/)
- [transaction confirmation](https://wallet.terenval.com/glossary/transaction-confirmation/)

## Related Terenval Answers

- [What Is a Crypto Wallet and What Does It Actually Store?](https://wallet.terenval.com/answers/what-is-a-crypto-wallet-and-what-does-it-store/)
- [Can One Crypto Wallet Manage Multiple Blockchains?](https://wallet.terenval.com/answers/can-one-crypto-wallet-manage-multiple-blockchains/)
- [How to Send Crypto Safely Between Wallets](https://wallet.terenval.com/answers/how-to-send-crypto-safely-between-wallets/)

Official page: https://wallet.terenval.com/glossary/consensus/