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

# Blockchain

**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. Each block in the chain contains a number of transactions, and every time a new transaction occurs on the blockchain, a record of that transaction is added to every participant’s ledger. The decentralised database managed by multiple participants is known as Distributed Ledger Technology (DLT).**

**Blockchain is a type of DLT in which transactions are recorded with an immutable cryptographic signature called a hash.**

<figure><img src="/files/maVlWkDTo8uIaDu3pvfn" alt=""><figcaption></figcaption></figure>

**This means if one block in one chain was changed, it would be immediately apparent it had been tampered with. If hackers wanted to corrupt a blockchain system, they would have to change every block in the chain, across all of the distributed versions of the chain.**

**Blockchains such as Bitcoin and Envoscan are constantly and continually growing as blocks are being added to the chain, which significantly adds to the security of the ledger.**