> For the complete documentation index, see [llms.txt](https://cryptotravel.gitbook.io/cryptotravel/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cryptotravel.gitbook.io/cryptotravel/intro-basics/definitions/blockchain.md).

# Blockchain

Let's see briefly what blockchain is. Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system. A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.

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**One such blockchain is CRONOS, where this project so dear to our hearts will be reborn.**