# Blocks **tl-solana-merged-data.blocks** The table contains block data for the Solana blockchain. Use it to identify block activity and transaction changes over time. | Column Name | Column Type | Description | | ------------------------ | ----------- | ----------------------------------------------------- | | hash | string | string The hash of this block, base-58 encoded | | height | bigint | The number of blocks beneath the current block | | slot | bigint | This block’s slot index in the ledger | | time | timestamp | The (estimated) time this block was produced | | date | date | Used to partition by | | parent\_slot | bigint | The slot index of this block's parent | | previous\_block\_hash | string | The hash of this block's parent, base-58 encoded | | total\_transactions | bigint | Total number of transactions in this block | | successful\_transactions | bigint | Total number of successful transactions in this block | | failed\_transactions | bigint | Total number of failed transactions in this block | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.topledger.xyz/data-tables/solana-data/blocks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.