can successfully fetch zkeyhash from chain

codexcrawler/installer.nim

@@ -18,7 +18,7 @@ import ./components/todolist
 proc createComponents*(state: State): Future[?!seq[Component]] {.async.} =
   var components: seq[Component] = newSeq[Component]()
 
-  aaa()
+  await aaa(state.config)
 
   let clock = createClock()
 

codexcrawler/services/marketplace.nim

@@ -1,4 +1,30 @@
-import ./marketplace/market
+import pkg/ethers
+import pkg/questionable
 
-proc aaa*() =
+import ./marketplace/market
+import ./marketplace/marketplace
+import ../config
+
+proc aaa*(config: Config) {.async.} = 
   echo "aaa"
+
+  let provider = JsonRpcProvider.new(config.ethProvider)
+  without marketplaceAddress =? Address.init(config.marketplaceAddress):
+    raiseAssert("A!")
+
+  let marketplace = Marketplace.new(marketplaceAddress, provider)
+  let market = OnChainMarket.new(marketplace)
+
+  echo "bbb"
+  echo "running with marketplace address: " & $marketplaceAddress
+
+  try:
+    without zkeyhash =? await market.getZkeyHash():
+      echo "couldn't get zkeyhash"
+      return
+    echo "zkeyhash=" & $zkeyhash
+
+  except CatchableError as err:
+    echo "catchable error! " & err.msg
+
+  echo "ccc"