diff --git a/scripts/node.sh b/scripts/node.sh
index 6cdf71c49..4a0b13034 100755
--- a/scripts/node.sh
+++ b/scripts/node.sh
@@ -86,11 +86,12 @@ fi
 
 print_usage() {
    cat <<- ENDEND
-	usage: ${progname} [-1ch] account_address
+	usage: ${progname} [-1ch] [-k KEYFILE]
 	-c              back up database/logs and start clean
 	 		(use only when directed by Harmony)
 	-1		do not loop; run once and exit
 	-h		print this help and exit
+	-k KEYFILE	use the given BLS key file (default: autodetect)
 	ENDEND
 }
 
@@ -103,10 +104,11 @@ usage() {
 unset start_clean loop
 start_clean=false
 loop=true
+${BLSKEYFILE=}
 
 unset OPTIND OPTARG opt
 OPTIND=1
-while getopts :1ch opt
+while getopts :1chk: opt
 do
    case "${opt}" in
    '?') usage "unrecognized option -${OPTARG}";;
@@ -114,25 +116,44 @@ do
    c) start_clean=true;;
    1) loop=false;;
    h) print_usage; exit 0;;
+   k) BLSKEYFILE="${OPTARG}";;
    *) err 70 "unhandled option -${OPTARG}";;  # EX_SOFTWARE
    esac
 done
 shift $((${OPTIND} - 1))
 
 case $# in
-0)
-   usage "Please provide account address." \
-      "For foundational nodes, please follow the instructions in Discord #foundational-nodes channel" \
-      "to generate and register your account address with <genesis at harmony dot one>."
+[1-9]*)
+   usage "extra arguments at the end ($*)"
    ;;
 esac
 
-IDX="${1}"
-shift 1
-
-case $# in
-[1-9]*)
-   usage "extra arguments at the end ($*)"
+case "${BLSKEYFILE}" in
+"")
+   unset -v f
+   for f in \
+      ~/*--????-??-??T??-??-??.*Z--bls_???????????????????????????????????????????????????????????????????????????????????????????????? \
+      ~/????????????????????????????????????????????????????????????????????????????????????????????????.key \
+      *--????-??-??T??-??-??.*Z--bls_???????????????????????????????????????????????????????????????????????????????????????????????? \
+      ????????????????????????????????????????????????????????????????????????????????????????????????.key
+   do
+      [ -f "${f}" ] || continue
+      case "${BLSKEYFILE}" in
+      "")
+         BLSKEYFILE="${f}"
+         ;;
+      *)
+         err 69 "multiple key files found (${f}, ${BLSKEYFILE}); please use -k to specify"
+         ;;
+      esac
+   done
+   case "${BLSKEYFILE}" in
+   "") err 69 "could not autodetect BLS key file; please use -k to specify";;
+   esac
+   msg "autodetected BLS key file: ${BLSKEYFILE}"
+   ;;
+*)
+   msg "using manually specified BLS key file: ${BLSKEYFILE}"
    ;;
 esac
 
@@ -298,7 +319,7 @@ kill_node() {
 check_update_pid=$!
 
 unset -v passphrase
-read -rsp "Enter passphrase for account ${IDX}: " passphrase
+read -rsp "Enter passphrase for the BLS key file ${BLSKEYFILE}: " passphrase
 echo
 
 while :
@@ -306,9 +327,9 @@ do
    msg "############### Running Harmony Process ###############"
    if [ "$OS" == "Linux" ]; then
    # Run Harmony Node
-      echo -n "${passphrase}" | LD_LIBRARY_PATH=$(pwd) ./harmony -bootnodes $BN_MA -ip $PUB_IP -port $NODE_PORT -is_genesis -is_archival -accounts $IDX -pass stdin
+      echo -n "${passphrase}" | LD_LIBRARY_PATH=$(pwd) ./harmony -bootnodes $BN_MA -ip $PUB_IP -port $NODE_PORT -is_genesis -blskey_file "${BLSKEYFILE}" -blspass stdin
    else
-      echo -n "${passphrase}" | DYLD_FALLBACK_LIBRARY_PATH=$(pwd) ./harmony -bootnodes $BN_MA -ip $PUB_IP -port $NODE_PORT -is_genesis -is_archival -accounts $IDX -pass stdin
+      echo -n "${passphrase}" | DYLD_FALLBACK_LIBRARY_PATH=$(pwd) ./harmony -bootnodes $BN_MA -ip $PUB_IP -port $NODE_PORT -is_genesis -blskey_file "${BLSKEYFILE}" -blspass stdin
    fi || msg "node process finished with status $?"
    ${loop} || break
    msg "restarting in 10s..."