diff --git a/beacon_chain/conf.nim b/beacon_chain/conf.nim
index 0d4acc123..b2f1d8dab 100644
--- a/beacon_chain/conf.nim
+++ b/beacon_chain/conf.nim
@@ -1256,7 +1256,7 @@ proc readValue*(r: var TomlReader, value: var GraffitiBytes)
                {.raises: [Defect, SerializationError, IOError].} =
   try:
     value = GraffitiBytes.init(r.readValue(string))
-  except ValueError as err:
+  except ValueError:
     r.raiseUnexpectedValue("A printable string or 0x-prefixed hex-encoded raw bytes expected")
 
 proc readValue*(r: var TomlReader, val: var NatConfig)
diff --git a/beacon_chain/era_db.nim b/beacon_chain/era_db.nim
index 035c293b4..dcea515a3 100644
--- a/beacon_chain/era_db.nim
+++ b/beacon_chain/era_db.nim
@@ -151,7 +151,7 @@ proc getStateSSZ*(
       else: len
 
   bytes = newSeqUninitialized[byte](wanted)
-  let (_, written) = uncompressFramed(tmp, bytes).valueOr:
+  discard uncompressFramed(tmp, bytes).valueOr:
     return err("State failed to decompress, era file corrupt?")
 
   ok()
@@ -384,7 +384,7 @@ proc getPartialState(
   try:
     readSszBytes(tmp.toOpenArray(0, partialBytes - 1), output)
     true
-  except CatchableError as exc:
+  except CatchableError:
     # TODO log?
     false
 
diff --git a/beacon_chain/networking/network_metadata.nim b/beacon_chain/networking/network_metadata.nim
index 2e48128bb..19875b12c 100644
--- a/beacon_chain/networking/network_metadata.nim
+++ b/beacon_chain/networking/network_metadata.nim
@@ -255,9 +255,6 @@ elif const_preset == "mainnet":
     {.compile: "network_metadata_mainnet.S".}
 
   const
-    eth2NetworksDir = vendorDir & "/eth2-networks"
-    sepoliaDir = vendorDir & "/sepolia"
-
     mainnetMetadata = loadCompileTimeNetworkMetadata(
       vendorDir & "/eth2-networks/shared/mainnet", some mainnet, not incbinEnabled)
     praterMetadata = loadCompileTimeNetworkMetadata(
diff --git a/beacon_chain/nimbus_signing_node.nim b/beacon_chain/nimbus_signing_node.nim
index ce68045f7..115aade5f 100644
--- a/beacon_chain/nimbus_signing_node.nim
+++ b/beacon_chain/nimbus_signing_node.nim
@@ -45,7 +45,7 @@ type
 
   SigningNodeError* = object of CatchableError
 
-proc validate(key: string, value: string): int =
+func validate(key: string, value: string): int =
   case key
   of "{validator_key}":
     0
diff --git a/beacon_chain/rpc/rest_constants.nim b/beacon_chain/rpc/rest_constants.nim
index 0387f412f..871d7e53f 100644
--- a/beacon_chain/rpc/rest_constants.nim
+++ b/beacon_chain/rpc/rest_constants.nim
@@ -183,8 +183,6 @@ const
     "No Finalized Snapshot Available"
   NoImplementationError* =
     "Not implemented yet"
-  KeystoreAdditionFailure =
-    "Could not add some keystores"
   InvalidKeystoreObjects* =
     "Invalid keystore objects found"
   InvalidValidatorPublicKey* =
diff --git a/beacon_chain/spec/datatypes/base.nim b/beacon_chain/spec/datatypes/base.nim
index 6e176e657..fb5ddac35 100644
--- a/beacon_chain/spec/datatypes/base.nim
+++ b/beacon_chain/spec/datatypes/base.nim
@@ -595,7 +595,7 @@ template makeLimitedUInt*(T: untyped, limit: SomeUnsignedInt) =
   template asUInt64*(x: T): uint64 = uint64(distinctBase(x))
 
   template toSszType(x: T): uint64 =
-    {.error: "Limited types should not be used with SSZ (abi differences)".}
+    {.error: "Limited types should not be used with SSZ (ABI differences)".}
 
 template makeLimitedU8*(T: untyped, limit: uint8) =
   makeLimitedUInt(T, limit)
diff --git a/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim b/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
index d50004c28..df9257114 100644
--- a/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
+++ b/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
@@ -670,7 +670,7 @@ proc readValue*(reader: var JsonReader[RestJson],
   for e in reader.readArray(string):
     let parsed = try:
       parseBiggestUInt(e)
-    except ValueError as err:
+    except ValueError:
       reader.raiseUnexpectedValue(
         "A string-encoded 8-bit usigned integer value expected")
 
@@ -2707,7 +2707,7 @@ proc readValue*(reader: var JsonReader[RestJson],
         let key =
           try:
             parseKeystore(item)
-          except SerializationError as exc:
+          except SerializationError:
             # TODO re-raise the exception by adjusting the column index, so the user
             # will get an accurate syntax error within the larger message
             reader.raiseUnexpectedValue("Invalid keystore format")
@@ -2722,7 +2722,7 @@ proc readValue*(reader: var JsonReader[RestJson],
                           SPDIR,
                           requireAllFields = true,
                           allowUnknownFields = true)
-        except SerializationError as exc:
+        except SerializationError:
           reader.raiseUnexpectedValue("Invalid slashing protection format")
       some(db)
     else:
diff --git a/beacon_chain/spec/keystore.nim b/beacon_chain/spec/keystore.nim
index 8942e363a..8d26571f7 100644
--- a/beacon_chain/spec/keystore.nim
+++ b/beacon_chain/spec/keystore.nim
@@ -887,13 +887,6 @@ proc readValue*(reader: var JsonReader, value: var RemoteKeystore)
       if provenBlockProperties.isNone:
         reader.raiseUnexpectedValue("The required field `proven_block_properties` is missing")
 
-  let keystoreFlags =
-    block:
-      var res: set[RemoteKeystoreFlag]
-      if ignoreSslVerification.isSome():
-        res.incl(RemoteKeystoreFlag.IgnoreSSLVerification)
-      res
-
   value = case remoteType.get(RemoteSignerType.Web3Signer)
     of RemoteSignerType.Web3Signer:
       RemoteKeystore(
diff --git a/beacon_chain/validators/keystore_management.nim b/beacon_chain/validators/keystore_management.nim
index 7cc20326d..9af0e6080 100644
--- a/beacon_chain/validators/keystore_management.nim
+++ b/beacon_chain/validators/keystore_management.nim
@@ -258,44 +258,6 @@ proc checkAndCreateDataDir*(dataDir: string): bool =
 
   return true
 
-proc checkSensitivePathPermissions(dirFilePath: string): bool =
-  ## If ``dirFilePath`` is file, then check if file has only
-  ##
-  ##   - "(600) rwx------" permissions on Posix (Linux, MacOS, BSD)
-  ##   - current user only ACL on Windows
-  ##
-  ## If ``dirFilePath`` is directory, then check if directory has only
-  ##
-  ##   - "(700) rwx------" permissions on Posix (Linux, MacOS, BSD)
-  ##   - current user only ACL on Windows
-  ##
-  ## Procedure returns ``true`` if directory/file is present and all required
-  ## permissions are set.
-  let r1 = isDir(dirFilePath)
-  let r2 = isFile(dirFilePath)
-  if r1 or r2:
-    when defined(windows):
-      let res = checkCurrentUserOnlyACL(dirFilePath)
-      if res.isErr():
-        false
-      else:
-        if res.get() == false:
-          false
-        else:
-          true
-    else:
-      let requiredPermissions = if r1: 0o700 else: 0o600
-      let res = getPermissions(dirFilePath)
-      if res.isErr():
-        false
-      else:
-        if res.get() != requiredPermissions:
-          false
-        else:
-          true
-  else:
-    false
-
 proc checkSensitiveFilePermissions*(filePath: string): bool =
   ## Check if ``filePath`` has only "(600) rw-------" permissions.
   ## Procedure returns ``false`` if permissions are different and we can't
@@ -711,7 +673,6 @@ iterator listLoadableKeystores*(validatorsDir, secretsDir: string,
         let
           keyName = splitFile(file).name
           keystoreDir = validatorsDir / keyName
-          keystoreFile = keystoreDir / KeystoreFileName
 
         if not(checkKeyName(keyName)):
           # Skip folders which name do not satisfy "0x[a-fA-F0-9]{96, 96}".
@@ -722,7 +683,6 @@ iterator listLoadableKeystores*(validatorsDir, secretsDir: string,
           continue
 
         let
-          secretFile = secretsDir / keyName
           keystore = loadKeystore(validatorsDir, secretsDir, keyName,
                                   nonInteractive, cache).valueOr:
             fatal "Unable to load keystore", keystore = file
@@ -1282,14 +1242,6 @@ proc saveKeystore*(
   let remoteInfo = RemoteSignerInfo(url: url, id: 0)
   saveKeystore(validatorsDir, publicKey, @[remoteInfo], 1)
 
-proc saveLockedKeystore(
-       validatorsDir: string,
-       publicKey: ValidatorPubKey,
-       url:  HttpHostUri
-     ): Result[FileLockHandle, KeystoreGenerationError] {.raises: [Defect].} =
-  let remoteInfo = RemoteSignerInfo(url: url, id: 0)
-  saveLockedKeystore(validatorsDir, publicKey, @[remoteInfo], 1)
-
 proc importKeystore*(pool: var ValidatorPool,
                      validatorsDir: string,
                      keystore: RemoteKeystore): ImportResult[KeystoreData]
@@ -1298,7 +1250,6 @@ proc importKeystore*(pool: var ValidatorPool,
     publicKey = keystore.pubkey
     keyName = publicKey.fsName
     keystoreDir = validatorsDir / keyName
-    keystoreFile = keystoreDir / RemoteKeystoreFileName
 
   # We check `publicKey`.
   let cookedKey = publicKey.load().valueOr:
@@ -1340,9 +1291,7 @@ proc importKeystore*(pool: var ValidatorPool,
   let
     publicKey = privateKey.toPubKey()
     keyName = publicKey.fsName
-    secretFile = secretsDir / keyName
     keystoreDir = validatorsDir / keyName
-    keystoreFile = keystoreDir / KeystoreFileName
 
   # We check `publicKey` in memory storage first.
   if publicKey.toPubKey() in pool:
diff --git a/beacon_chain/validators/validator_monitor.nim b/beacon_chain/validators/validator_monitor.nim
index b4b3219d1..53b7a3472 100644
--- a/beacon_chain/validators/validator_monitor.nim
+++ b/beacon_chain/validators/validator_monitor.nim
@@ -779,7 +779,6 @@ proc registerSyncContribution*(
     participants: openArray[ValidatorIndex]) =
   let
     slot = contribution_and_proof.contribution.slot
-    beacon_block_root = contribution_and_proof.contribution.beacon_block_root
     delay = seen_timestamp - slot.sync_contribution_deadline()
 
   let aggregator_index = contribution_and_proof.aggregator_index
diff --git a/ncli/e2store.nim b/ncli/e2store.nim
index 3047b1dd8..8763c5669 100644
--- a/ncli/e2store.nim
+++ b/ncli/e2store.nim
@@ -26,11 +26,6 @@ const
   SnappyBeaconBlock* = [byte 0x01, 0x00]
   SnappyBeaconState* = [byte 0x02, 0x00]
 
-  TypeFieldLen = 2
-  LengthFieldLen = 4
-  ReservedFieldLen = 2
-  HeaderFieldLen = TypeFieldLen + LengthFieldLen + ReservedFieldLen
-
   FAR_FUTURE_ERA* = Era(not 0'u64)
 
 type