What is an elements blockchain?

An Elements blockchain can operate as a standalone blockchain or be pegged to another as a sidechain, enabling assets to be verifiably transferred between two different blockchains. Elements allows you to issue multiple different types of asset on a single blockchain, opening up many new use cases for implementation.

What is a blockchain ledger?

A blockchain ledger consists of two types of records, individual transactions and blocks. The first block consists of a header and data that pertain to transactions taking place within a set time period. The block's timestamp is used to help create an alphanumeric string called a hash.

What makes a blockchain a secure system?

Once a block is added to the blockchain, all nodes (participating computers) update their copy of the blockchain. This is what makes the blockchain a secure system. Any changes to the contents of a single block have to be recorded in a new block, making it nearly impossible to rewrite a block’s history.

What happens if a block is changed on a blockchain?

This creates a system where if a block is altered, an adjacent block will immediately catch the error and prevent the invalid transaction. As a result, transactions on the blockchain cannot be changed — creating a permanent record that’s shared with everyone on the network.