EIP-7685: update

Author: fjl

EIPS/eip-7685.md

@@ -48,16 +48,18 @@ Each request type will defines its own `requests` object using with its own
 Extend the header with a new 32 byte commitment value `requests_hash`.
 
 A requests hash list is computed by hashing the elements of the block requests list, but
-only ones where `request_data` is non-empty. The commitment is then computed as the sha256
-hash of the list of requests element hashes.
+only ones where `request_data` is non-empty. Note we assume `request_type` has a size of
+one byte.
+
+The commitment is then computed as the sha256 hash of the list of element hashes.
 
 
 ```python
 def compute_requests_hash(block_requests):
     m = sha256()
     for r in block_requests:
         if len(r) > 1:
-            m.update(sha256(r))
+            m.update(sha256(r).digest())
     return m.digest()
 
 block.header.requests_hash = compute_requests_hash(requests)