> ## 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.

# Ledgers

### Table Columns

Unique Key: `SEQUENCE`

| Column Name                         | Description                                               |
| ----------------------------------- | --------------------------------------------------------- |
| SEQUENCE                            | The sequence number of the ledger                         |
| CLOSE\_TIME                         | The timestamp when the ledger was closed (Unix timestamp) |
| HASH                                | The hash of the ledger header                             |
| BASE\_FEE                           | The base fee for operations in this ledger (in stroops)   |
| BASE\_RESERVE                       | The base reserve for accounts in this ledger (in stroops) |
| ID\_POOL                            | The ID pool for this ledger                               |
| INFLATION\_SEQ                      | The inflation sequence number for this ledger             |
| FEE\_POOL                           | The fee pool for this ledger (in stroops)                 |
| TOTAL\_COINS                        | The total number of lumens in circulation                 |
| PREVIOUS\_LEDGER\_HASH              | The hash of the previous ledger                           |
| EXTENSION                           | Extension data for the ledger                             |
| NODE\_ID                            | The ID of the node that closed this ledger                |
| SIGNATURE                           | The signature of the ledger header                        |
| SKIP\_LIST                          | List of ledger hashes that were skipped                   |
| BUCKET\_LIST\_HASH                  | The hash of the bucket list                               |
| MAX\_TX\_SET\_SIZE                  | The maximum size of the transaction set                   |
| TX\_SET\_HASH                       | The hash of the transaction set                           |
| TX\_SET\_RESULT\_HASH               | The hash of the transaction set results                   |
| UPGRADES                            | Any protocol upgrades applied in this ledger              |
| TOTAL\_BYTE\_SIZE\_OF\_BUCKET\_LIST | The total byte size of the bucket list                    |
| PROTOCOL\_VERSION                   | The protocol version used in this ledger                  |
| TRANSACTION\_COUNT                  | The total number of transactions in this ledger           |
| SUCCESSFUL\_TRANSACTION\_COUNT      | The number of successful transactions in this ledger      |
| FAILED\_TRANSACTION\_COUNT          | The number of failed transactions in this ledger          |
| OPERATION\_COUNT                    | The total number of operations in this ledger             |
| EFFECT\_COUNT                       | The total number of effects generated in this ledger      |
| CONTRACT\_EVENT\_COUNT              | The number of contract events in this ledger              |
| DIAGNOSTIC\_EVENT\_COUNT            | The number of diagnostic events in this ledger            |
| METADATA                            | Additional metadata for the ledger                        |
| \_EXTRA\_FIELDS                     | Additional fields not explicitly defined                  |
| \_CREATED\_AT                       | Timestamp when this record was created                    |
| \_UPDATED\_AT                       | Timestamp when this record was last updated               |