diff --git a/Makefile b/Makefile
index 8647eae13..0a300ac03 100644
--- a/Makefile
+++ b/Makefile
@@ -144,7 +144,6 @@ clean_eth2_network_simulation_all:
 	rm -rf tests/simulation/{data,validators}
 
 GOERLI_TESTNETS_PARAMS := \
-  --dump \
   --web3-url=$(GOERLI_WEB3_URL) \
   --tcp-port=$$(( $(BASE_PORT) + $(NODE_ID) )) \
   --udp-port=$$(( $(BASE_PORT) + $(NODE_ID) )) \
@@ -201,7 +200,7 @@ medalla-dev: | beacon_node
 		--network=medalla \
 		--log-level="DEBUG; TRACE:discv5,networking; REQUIRED:none; DISABLED:none" \
 		--data-dir=build/data/shared_medalla_$(NODE_ID) \
-		$(GOERLI_TESTNETS_PARAMS) $(NODE_PARAMS)
+		$(GOERLI_TESTNETS_PARAMS) --dump $(NODE_PARAMS)
 
 medalla-deposit-data: | beacon_node deposit_contract
 	build/beacon_node deposits create \
@@ -262,13 +261,13 @@ altona-dev: | beacon_node
 		--network=altona \
 		--log-level="DEBUG; TRACE:discv5,networking; REQUIRED:none; DISABLED:none" \
 		--data-dir=build/data/shared_altona_$(NODE_ID) \
-		$(GOERLI_TESTNETS_PARAMS) $(NODE_PARAMS)
+		$(GOERLI_TESTNETS_PARAMS) --dump $(NODE_PARAMS)
 
 altona-deposit: | beacon_node deposit_contract
 	build/beacon_node deposits create \
 		--network=altona \
 		--out-deposits-file=nbc-altona-deposits.json \
-		--new-wallet-file=build/data/shared_algona_$(NODE_ID)/wallet.json \
+		--new-wallet-file=build/data/shared_altona_$(NODE_ID)/wallet.json \
 		--out-deposits-dir=build/data/shared_altona_$(NODE_ID)/validators \
 		--out-secrets-dir=build/data/shared_altona_$(NODE_ID)/secrets \
 		--count=$(VALIDATORS)
diff --git a/beacon_chain/beacon_node.nim b/beacon_chain/beacon_node.nim
index a89ac7a05..7d70456e9 100644
--- a/beacon_chain/beacon_node.nim
+++ b/beacon_chain/beacon_node.nim
@@ -72,7 +72,7 @@ logScope: topics = "beacnde"
 
 proc onBeaconBlock(node: BeaconNode, signedBlock: SignedBeaconBlock) {.gcsafe.}
 
-proc getStateFromSnapshot(conf: BeaconNodeConf): NilableBeaconStateRef =
+proc getStateFromSnapshot(conf: BeaconNodeConf, stateSnapshotContents: ref string): NilableBeaconStateRef =
   var
     genesisPath = conf.dataDir/genesisFile
     snapshotContents: TaintedString
@@ -105,8 +105,8 @@ proc getStateFromSnapshot(conf: BeaconNodeConf): NilableBeaconStateRef =
     except CatchableError as err:
       error "Failed to read genesis file", err = err.msg
       quit 1
-  elif conf.stateSnapshotContents != nil:
-    swap(snapshotContents, TaintedString conf.stateSnapshotContents[])
+  elif stateSnapshotContents != nil:
+    swap(snapshotContents, TaintedString stateSnapshotContents[])
   else:
     # No snapshot was provided. We should wait for genesis.
     return nil
@@ -140,7 +140,8 @@ func enrForkIdFromState(state: BeaconState): ENRForkID =
 
 proc init*(T: type BeaconNode,
            rng: ref BrHmacDrbgContext,
-           conf: BeaconNodeConf): Future[BeaconNode] {.async.} =
+           conf: BeaconNodeConf,
+           stateSnapshotContents: ref string): Future[BeaconNode] {.async.} =
   let
     netKeys = getPersistentNetKeys(rng[], conf)
     nickname = if conf.nodeName == "auto": shortForm(netKeys)
@@ -151,7 +152,7 @@ proc init*(T: type BeaconNode,
 
   if not ChainDAGRef.isInitialized(db):
     # Fresh start - need to load a genesis state from somewhere
-    var genesisState = conf.getStateFromSnapshot()
+    var genesisState = conf.getStateFromSnapshot(stateSnapshotContents)
 
     # Try file from command line first
     if genesisState.isNil:
@@ -220,9 +221,9 @@ proc init*(T: type BeaconNode,
         error "Failed to initialize database", err = e.msg
         quit 1
 
-  if conf.stateSnapshotContents != nil:
+  if stateSnapshotContents != nil:
     # The memory for the initial snapshot won't be needed anymore
-    conf.stateSnapshotContents[] = ""
+    stateSnapshotContents[] = ""
 
   # TODO check that genesis given on command line (if any) matches database
   let
@@ -1036,7 +1037,10 @@ when hasPrompt:
       # createThread(t, processPromptCommands, addr p)
 
 programMain:
-  var config = makeBannerAndConfig(clientId, BeaconNodeConf)
+  var
+    config = makeBannerAndConfig(clientId, BeaconNodeConf)
+    # This is ref so we can mutate it (to erase it) after the initial loading.
+    stateSnapshotContents: ref string
 
   setupLogging(config.logLevel, config.logFile)
 
@@ -1077,7 +1081,7 @@ programMain:
         config.bootstrapNodes.add node
 
       if config.stateSnapshot.isNone and metadata.genesisData.len > 0:
-        config.stateSnapshotContents = newClone metadata.genesisData
+        stateSnapshotContents = newClone metadata.genesisData
 
     template checkForIncompatibleOption(flagName, fieldName) =
       # TODO: This will have to be reworked slightly when we introduce config files.
@@ -1166,7 +1170,7 @@ programMain:
 
     config.createDumpDirs()
 
-    var node = waitFor BeaconNode.init(rng, config)
+    var node = waitFor BeaconNode.init(rng, config, stateSnapshotContents)
 
     ## Ctrl+C handling
     proc controlCHandler() {.noconv.} =
diff --git a/beacon_chain/eth2_json_rpc_serialization.nim b/beacon_chain/eth2_json_rpc_serialization.nim
index 63212a7ee..f3b47ada5 100644
--- a/beacon_chain/eth2_json_rpc_serialization.nim
+++ b/beacon_chain/eth2_json_rpc_serialization.nim
@@ -14,6 +14,7 @@ proc fromJson*(n: JsonNode, argName: string, result: var ValidatorPubKey) =
   result = ValidatorPubKey.fromHex(n.getStr()).tryGet()
 
 proc `%`*(pubkey: ValidatorPubKey): JsonNode =
+  unsafePromote(pubkey.unsafeAddr)
   result = newJString($pubkey)
 
 proc fromJson*(n: JsonNode, argName: string, result: var List) =
@@ -31,6 +32,7 @@ proc fromJson*(n: JsonNode, argName: string, result: var ValidatorSig) =
   result = ValidatorSig.fromHex(n.getStr()).tryGet()
 
 proc `%`*(value: ValidatorSig): JsonNode =
+  unsafePromote(value.unsafeAddr)
   result = newJString($value)
 
 proc fromJson*(n: JsonNode, argName: string, result: var Version) =
diff --git a/beacon_chain/keystore_management.nim b/beacon_chain/keystore_management.nim
index ff32a225f..bbc01c4b6 100644
--- a/beacon_chain/keystore_management.nim
+++ b/beacon_chain/keystore_management.nim
@@ -228,7 +228,7 @@ proc importKeystoresFromDir*(rng: var BrHmacDrbgContext,
       let keystore = try:
         Json.loadFile(file, Keystore)
       except SerializationError as e:
-        warn "Invalid keystore", err = e.formatMsg(file)
+        trace "Invalid keystore", err = e.formatMsg(file)
         continue
       except IOError as e:
         warn "Failed to read keystore file", file, err = e.msg