diff --git a/docs/server/source/data-models/block-model.rst b/docs/server/source/data-models/block-model.rst
index e2e3b418..889dc50f 100644
--- a/docs/server/source/data-models/block-model.rst
+++ b/docs/server/source/data-models/block-model.rst
@@ -17,7 +17,7 @@ A block has the following structure:
     }
 
 
-- ``id``: The hash of the serialized ``block`` (i.e. the ``timestamp``, ``transactions``, ``node_pubkey``, and ``voters``). This is also a database primary key; that's how we ensure that all blocks are unique.
+- ``id``: The :ref:`hash <Hashes>` of the serialized inner ``block`` (i.e. the ``timestamp``, ``transactions``, ``node_pubkey``, and ``voters``). It's used as a unique index in the database backend (e.g. RethinkDB or MongoDB).
 
 - ``block``:
     - ``timestamp``: The Unix time when the block was created. It's provided by the node that created the block.
@@ -27,7 +27,7 @@ A block has the following structure:
       It's the list of federation nodes which can cast a vote on this block.
       This list can change from block to block, as nodes join and leave the federation.
 
-- ``signature``: Cryptographic signature of the block by the node that created the block. (To create the signature, the node serializes the block contents and signs it with its private key.)
+- ``signature``: :ref:`Cryptographic signature <Signature Algorithm and Keys>` of the block by the node that created the block. To generate the signature, the node builds a dict including the ``id``, the inner ``block`` & the ``signature`` (with a value of ``None``), it serializes that dict, and then signs *that* with its private key.
 
 
 Working with Blocks