{% docs block_hash %}
The cryptographic hash of this block, as recorded on the Solana blockchain. Used to verify block integrity and support block explorer lookups. This value is a base58-encoded string.

**Example:**
- "5h3k...9zQ"

**Business Context:**
- Used for block verification, deduplication, and explorer integrations.
- Supports chain integrity and auditability.
{% enddocs %} 