[KGA-32] [KGA-143] [KGA-86] [KGA-88]fix: last 10 blockhash are 0

cairo_zero/kakarot/instructions/block_information.cairo

@@ -165,7 +165,9 @@ namespace Internals {
         }
 
         let lower_bound = Helpers.saturated_sub(evm.message.env.block_number, 256);
-        let in_range = is_in_range(block_number.low, lower_bound, evm.message.env.block_number);
+        let in_range = is_in_range(
+            block_number.low, lower_bound, evm.message.env.block_number - 10
+        );
 
         if (in_range == FALSE) {
             Stack.push_uint256(Uint256(0, 0));

tests/end_to_end/PlainOpcodes/test_plain_opcodes.py

@@ -63,6 +63,19 @@ async def test_should_return_zero_with_invalid_block_number(
 
             assert int.from_bytes(blockhash_invalid_number, byteorder="big") == 0
 
+        async def test_should_return_zero_for_last_10_blocks(
+            self, plain_opcodes, block_number
+        ):
+            last_10_block_hashes = [
+                await plain_opcodes.opcodeBlockHash(await block_number("latest") - i)
+                for i in range(10)
+            ]
+            # assert all blockhashes are zero
+            assert all(
+                int.from_bytes(blockhash, byteorder="big") == 0
+                for blockhash in last_10_block_hashes
+            )
+
     class TestAddress:
         async def test_should_return_self_address(self, plain_opcodes):
             address = await plain_opcodes.opcodeAddress()