# Understanding Transactions

> Articles about transactions

> For the complete documentation index, see [llms.txt](/docs/llms.txt).

# What are blockchain transactions?

Transactions are the fundamental building blocks of the blockchain, used to transfer value, store data, and execute smart contracts. This section covers how transactions work and how you can query and understand them.

# Related articles

The following articles cover transactions in more detail:

* [Ethereum Transactions - Pending, Mined, Dropped & Replaced](/docs/ethereum-transactions-pending-mined-dropped-replaced)
* [How to Query Transaction Details on Ethereum](/docs/how-to-get-transaction-details)
* [Understanding the Transaction Object on Ethereum](/docs/understanding-the-transaction-object-on-ethereum)
* [What are Internal Transactions?](/docs/what-are-internal-transactions)