[#node-BlockManager-m_block_tree_db]
= xref:node.adoc[node]::xref:node/BlockManager.adoc[BlockManager]::m_block_tree_db
:relfileprefix: ../../
:mrdocs:

Handle to the on‐disk block index database (blocks/index/).

== Synopsis

Declared in `<node/blockstorage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[guarded_by(0x7f2e1b098cb8), guarded_by(0x7f2e26d1a418), guarded_by(0x7f2e375e04f8), guarded_by(0x7f2e333678b8), guarded_by(0x7f2e3542e8a8), guarded_by(0x7f2e28a73408)]]
std::unique_ptr<kernel::BlockTreeDB> m_block_tree_db;
----


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