A full guide on all Bitcoin concepts

Bitcoin uses a UTXO transaction model, and has a heavy focus on signatures and scripts for “locking” and “unlocking” tokens. It is also most well known for being tied to a 21 million token supply, and halvenings.

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Blocks

Blocks are the base unit that all transactions fit into.

Transactions

Transactions contain all spent inputs and created outputs from a UTXO transaction.

Outputs

Just the outputs, unnested.

Inputs

Just the inputs, unnested.