> ## 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

TON blocks are units of data that contain batches of validated transactions and messages, forming the backbone of the TON blockchain.

### Table Columns

| Column Name                  | Description                                                           |
| ---------------------------- | --------------------------------------------------------------------- |
| after\_merge                 | Indicates if the block was created after merging two shardchains.     |
| after\_split                 | Indicates if the block was created after splitting a shardchain.      |
| before\_split                | Indicates if the block was created before splitting a shardchain.     |
| created\_by                  | The entity (usually a validator's public key) that created the block. |
| end\_lt                      | End logical time associated with the block.                           |
| file\_hash                   | The hash of the block file.                                           |
| flags                        | Additional flags for the block.                                       |
| gen\_catchain\_seqno         | Catchain sequence number related to the block.                        |
| gen\_utime                   | The generation time of the block.                                     |
| global\_id                   | An ID of the network where this block is created.                     |
| key\_block                   | Indicates if this block is a key block.                               |
| master\_ref\_seqno           | The sequence number of the masterchain block.                         |
| masterchain\_block\_ref      | Reference to the corresponding masterchain block.                     |
| masterchain\_seqno           | Sequence number of the corresponding masterchain block.               |
| min\_ref\_mc\_seqno          | Minimum reference sequence number of the masterchain block.           |
| prev\_blocks                 | List of previous blocks in the shardchain.                            |
| prev\_key\_block\_seqno      | Sequence number of the previous key block.                            |
| rand\_seed                   | Random seed used in the block.                                        |
| root\_hash                   | The root hash of the block.                                           |
| seqno                        | The sequence number of the block.                                     |
| shard                        | The shard identifier of the block.                                    |
| start\_lt                    | Start logical time associated with the block.                         |
| tx\_count                    | The count of transactions in the block.                               |
| validator\_list\_hash\_short | Short hash of the validator list.                                     |
| version                      | Version of the block format.                                          |
| vert\_seqno                  | Vertical sequence number of the block.                                |
| vert\_seqno\_incr            | Vertical sequence number increment.                                   |
| want\_merge                  | Indicates if the block wants to merge shardchains.                    |
| want\_split                  | Indicates if the block wants to split the shardchain.                 |
| workchain                    | The workchain identifier of the block.                                |
| \_created\_at                | Timestamp of the entry creation.                                      |
| \_updated\_at                | Timestamp of the entry update.                                        |