diff --git a/specs/sharding/p2p-interface.md b/specs/sharding/p2p-interface.md
index 86c836c38..7e8c40dcf 100644
--- a/specs/sharding/p2p-interface.md
+++ b/specs/sharding/p2p-interface.md
@@ -23,27 +23,27 @@
 
 ## Introduction
 
-With Phase 1, shard data is introduced, which requires various new additions and adjustments to the groundwork that Phase 0 implements.
-The specification of these changes continues in the same format, and assumes Phase0 as pre-requisite. 
-The Phase 0 adjustments and additions for Shards are outlined in this document.
+The specification of these changes continues in the same format as the [Phase0](../phase0/p2p-interface.md) and
+[Altair](../altair/p2p-interface.md) network specifications, and assumes them as pre-requisite. 
+The adjustments and additions for Shards are outlined in this document.
 
 ## New containers
 
 ### ShardBlob
 
-The blob of data, effectively a block. Network-only.
+Network-only.
 
 ```python
 class ShardBlob(Container):
     # Slot and shard that this blob is intended for
     slot: Slot
     shard: Shard
-    # The actual data
+    # The actual data. Represented in header as data commitment and degree proof
     data: List[BLSPoint, POINTS_PER_SAMPLE * MAX_SAMPLES_PER_BLOCK]
 ```
 
 Note that the hash-tree-root of the `ShardBlob` does not match the `ShardHeader`,
-since the blob deals with full data, whereas the header includes the KZG commitment instead.
+since the blob deals with full data, whereas the header includes the KZG commitment and degree proof instead.
 
 ### SignedShardBlob
 
@@ -51,7 +51,7 @@ Network-only.
 
 ```python
 class SignedShardBlob(Container):
-    blob: ShardBlob
+    message: ShardBlob
     # The signature, the message is the commitment on the blob
     signature: BLSSignature
 ```