add total supply to block info

db/block.py

@@ -1197,6 +1197,20 @@ async def get_block_target_sum_by_height(self, height: int) -> int:
                     if (res := await cur.fetchone()) is None:
                         return 0
                     return res["target_sum"]
+                except Exception as e:
+                    await self.message_callback(ExplorerMessage(ExplorerMessage.Type.DatabaseError, e))
+                    raise
+
+    async def get_total_supply_at_height(self, height: int) -> int:
+        async with self.pool.connection() as conn:
+            async with conn.cursor() as cur:
+                try:
+                    await cur.execute(
+                        "SELECT total_supply FROM block WHERE height = %s", (height,)
+                    )
+                    if (res := await cur.fetchone()) is None:
+                        return 0
+                    return res["total_supply"]
                 except Exception as e:
                     await self.message_callback(ExplorerMessage(ExplorerMessage.Type.DatabaseError, e))
                     raise

webapi/block_routes.py

@@ -1,4 +1,5 @@
 import math
+from decimal import Decimal
 from typing import Any
 
 from starlette.requests import Request
@@ -92,6 +93,7 @@ async def block_route(request: Request):
         "validators": validators,
         "all_validators": all_validators,
         "solutions": css,
+        "total_supply": Decimal(await db.get_total_supply_at_height(height)),
     }
     result["resolved_addresses"] = \
         await UIAddress.resolve_recursive_detached(