> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Blocks

Blocks are the building blocks of blockchains and rollups.

A block contains transactions which will alter the state of an EVM system incrementally. Transaction within a block can only be executed one after the other, not in parallel.

> [!NOTE]
>
> Several columns may only be applicable for specific EVM-compatible blockchains. The list of columns present in the table is not exhaustive.

### Table Columns

Unique Key: `number`

| Column Name | Data Type | Description |
| - | - | - |
| timestamp | TIMESTAMP\_NTZ(9) | The unix timestamp for when the block was collated. |
| number | BIGINT | The length of the chain, in blocks. |
| hash | VARCHAR | Unique identifier of a block. |
| parent\_hash | VARCHAR | Unique identifier of the block preceding this block, also known as the parent block. |
| nonce | VARCHAR | The hash of the generated proof-of-work. null if pending |
| sha3\_uncles | VARCHAR | An array of uncle hashes. |
| logs\_bloom | VARCHAR | The bloom filter for the logs of the block. |
| transactions\_root | VARCHAR | The root of the transaction trie of the block. |
| state\_root | VARCHAR | The root of the final state trie of the block. |
| receipts\_root | VARCHAR | The root of the receipts trie of the block. |
| miner | VARCHAR | The address of the beneficiary to whom the mining rewards were given. |
| difficulty | BIGINT | The integer of the difficulty for this block. |
| total\_difficulty | VARCHAR | The integer of the total difficulty of the chain until this block. |
| size | BIGINT | The size of the block, in bytes, as determined by the gas\_limit. |
| extra\_data | VARCHAR | The "extra data" field of this block. |
| gas\_limit | BIGINT | Gas limit of the current block. |
| gas\_used | BIGINT | Total gas used in the block. |
| transaction\_count | BIGINT | Number of transactions included in this block. |
| base\_fee\_per\_gas | BIGINT | Post London Upgrade (EIP1559), this represents the minimum gas\_used required for a transaction to be included in a block. Represented in wei. |
| send\_root | VARCHAR | The root hash of send operations. |
| created\_at | TIMESTAMP\_NTZ(9) | Timestamp when the record was created. |
| updated\_at | TIMESTAMP\_NTZ(9) | Timestamp when the record was last updated. |