diff --git a/.docker/1600-privnet-blocks-single.acc.gz b/.docker/1600-privnet-blocks-single.acc.gz
new file mode 100644
index 000000000..e8be800fb
Binary files /dev/null and b/.docker/1600-privnet-blocks-single.acc.gz differ
diff --git a/.docker/docker-compose.yml b/.docker/docker-compose.yml
index c9dfb75bf..773e18606 100644
--- a/.docker/docker-compose.yml
+++ b/.docker/docker-compose.yml
@@ -69,3 +69,19 @@ services:
       -  20336:20336
       -  30336:30336
       -  20004:20004
+  node_single:
+    container_name: neo_go_node_single
+    image: env_neo_go_image
+    command: "node --config-path /config --privnet"
+    volumes:
+      - ../config/protocol.privnet.docker.single.yml:/config/protocol.privnet.yml
+      - volume_chain:/chains
+      - ./1600-privnet-blocks-single.acc.gz:/privnet-blocks.acc.gz
+    networks:
+      neo_go_network:
+        ipv4_address: 172.200.0.1
+    ports:
+      -  20333:20333
+      -  30333:30333
+      -  20001:20001
+
diff --git a/.docker/privnet-entrypoint.sh b/.docker/privnet-entrypoint.sh
index db3c609ed..4a0c80f82 100755
--- a/.docker/privnet-entrypoint.sh
+++ b/.docker/privnet-entrypoint.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
-if test -f /6000-privnet-blocks.acc.gz; then
-	gunzip /6000-privnet-blocks.acc.gz
-	/usr/bin/neo-go db restore -i /6000-privnet-blocks.acc
+if test -f /privnet-blocks.acc.gz; then
+	gunzip /privnet-blocks.acc.gz
+	/usr/bin/neo-go db restore -i /privnet-blocks.acc
 fi
 /usr/bin/neo-go "$@"
diff --git a/Dockerfile b/Dockerfile
index fea8deda5..c4a40aa47 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,7 +30,7 @@ LABEL version=$VERSION
 WORKDIR /
 
 COPY --from=builder /neo-go/config /config
-COPY --from=builder /neo-go/.docker/6000-privnet-blocks.acc.gz /
+COPY --from=builder /neo-go/.docker/6000-privnet-blocks.acc.gz /privnet-blocks.acc.gz
 COPY --from=builder /neo-go/.docker/privnet-entrypoint.sh /usr/bin/privnet-entrypoint.sh
 COPY --from=builder /go/bin/neo-go /usr/bin/neo-go
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
diff --git a/Makefile b/Makefile
index ecdae7062..352192676 100644
--- a/Makefile
+++ b/Makefile
@@ -107,6 +107,10 @@ env_up:
 	@echo "=> Bootup environment"
 	@docker-compose -f $(DC_FILE) up -d node_one node_two node_three node_four
 
+env_single:
+	@echo "=> Bootup environment"
+	@docker-compose -f $(DC_FILE) up -d node_single
+
 env_down:
 	@echo "=> Stop environment"
 	@docker-compose -f $(DC_FILE) down
diff --git a/config/protocol.privnet.docker.single.yml b/config/protocol.privnet.docker.single.yml
new file mode 100644
index 000000000..2e0cdcd7e
--- /dev/null
+++ b/config/protocol.privnet.docker.single.yml
@@ -0,0 +1,53 @@
+ProtocolConfiguration:
+  Magic: 56753
+  AddressVersion: 23
+  SecondsPerBlock: 1
+  LowPriorityThreshold: 0.001
+  StandbyValidators:
+    - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
+  SeedList:
+    - 172.200.0.1:20333
+  SystemFee:
+    EnrollmentTransaction: 1000
+    IssueTransaction: 500
+    PublishTransaction: 500
+    RegisterTransaction: 10000
+  VerifyBlocks: true
+  VerifyTransactions: true
+
+ApplicationConfiguration:
+  # LogPath could be set up in case you need stdout logs to some proper file.
+  # LogPath: "./log/neogo.log"
+  DBConfiguration:
+    Type: "leveldb" #other options: 'inmemory','redis','boltdb'.
+    # DB type options. Uncomment those you need in case you want to switch DB type.
+    LevelDBOptions:
+      DataDirectoryPath: "/chains/single"
+  #    RedisDBOptions:
+  #      Addr: "localhost:6379"
+  #      Password: ""
+  #      DB: 0
+  #    BoltDBOptions:
+  #      FilePath: "./chains/privnet.bolt"
+  #  Uncomment in order to set up custom address for node.
+  #  Address: 127.0.0.1
+  NodePort: 20333
+  Relay: true
+  DialTimeout: 3
+  ProtoTickInterval: 2
+  MaxPeers: 10
+  AttemptConnPeers: 5
+  MinPeers: 0
+  RPC:
+    Enabled: true
+    EnableCORSWorkaround: false
+    Port: 30333
+  Prometheus:
+    Enabled: true
+    Port: 20001
+  Pprof:
+    Enabled: false
+    Port: 20011
+  UnlockWallet:
+    Path: "6PYLmjBYJ4wQTCEfqvnznGJwZeW9pfUcV5m5oreHxqryUgqKpTRAFt9L8Y"
+    Password: "one"
diff --git a/go.mod b/go.mod
index bcd5cb4c6..eac194fee 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/go-redis/redis v6.10.2+incompatible
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/mr-tron/base58 v1.1.2
-	github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775
+	github.com/nspcc-dev/dbft v0.0.0-20200113100648-b3578fc15d82
 	github.com/nspcc-dev/rfc6979 v0.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v1.2.1
diff --git a/go.sum b/go.sum
index 95c56f302..3223b56e9 100644
--- a/go.sum
+++ b/go.sum
@@ -94,8 +94,8 @@ github.com/nspcc-dev/dbft v0.0.0-20191205084618-dacb1a30c254 h1:A4OkQDQOSPsJF8qU
 github.com/nspcc-dev/dbft v0.0.0-20191205084618-dacb1a30c254/go.mod h1:w1Ln2aT+dBlPhLnuZhBV+DfPEdS2CHWWLp5JTScY3bw=
 github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae h1:T5V1QANlNMKun0EPB3eqg2PTXG4rmLhzDyEiV63kdB0=
 github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae/go.mod h1:3FjXOoHmA51EGfb5GS/HOv7VdmngNRTssSeQ729dvGY=
-github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775 h1:iqRxuEBrT2QbSdgmvGCwgn+lnOKmx1L5EiVTcOXUYt8=
-github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775/go.mod h1:IyIyVYKfi41kAlGWqicz9G8Iyni71Resuhtd9Y5ujJM=
+github.com/nspcc-dev/dbft v0.0.0-20200113100648-b3578fc15d82 h1:jwFLk2NKgyUbmJGlZsn3qIjoRqUkKajXb45ZuWbvkT4=
+github.com/nspcc-dev/dbft v0.0.0-20200113100648-b3578fc15d82/go.mod h1:IyIyVYKfi41kAlGWqicz9G8Iyni71Resuhtd9Y5ujJM=
 github.com/nspcc-dev/neofs-crypto v0.2.0 h1:ftN+59WqxSWz/RCgXYOfhmltOOqU+udsNQSvN6wkFck=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
 github.com/nspcc-dev/rfc6979 v0.1.0 h1:Lwg7esRRoyK1Up/IN1vAef1EmvrBeMHeeEkek2fAJ6c=
diff --git a/pkg/network/server.go b/pkg/network/server.go
index a8812b474..b0b3eef89 100644
--- a/pkg/network/server.go
+++ b/pkg/network/server.go
@@ -108,6 +108,8 @@ func NewServer(config ServerConfig, chain core.Blockchainer, log *zap.Logger) *S
 		Chain:      chain,
 		RequestTx:  s.requestTx,
 		Wallet:     config.Wallet,
+
+		TimePerBlock: config.TimePerBlock,
 	})
 	if err != nil {
 		return nil
@@ -115,7 +117,7 @@ func NewServer(config ServerConfig, chain core.Blockchainer, log *zap.Logger) *S
 
 	s.consensus = srv
 
-	if s.MinPeers <= 0 {
+	if s.MinPeers < 0 {
 		s.log.Info("bad MinPeers configured, using the default value",
 			zap.Int("configured", s.MinPeers),
 			zap.Int("actual", defaultMinPeers))
@@ -156,6 +158,8 @@ func (s *Server) Start(errChan chan error) {
 		zap.Uint32("blockHeight", s.chain.BlockHeight()),
 		zap.Uint32("headerHeight", s.chain.HeaderHeight()))
 
+	s.tryStartConsensus()
+
 	s.discovery.BackFill(s.Seeds...)
 
 	go s.bQueue.run()
diff --git a/pkg/network/server_config.go b/pkg/network/server_config.go
index 524557d3e..0cfad7f7e 100644
--- a/pkg/network/server_config.go
+++ b/pkg/network/server_config.go
@@ -57,6 +57,9 @@ type (
 
 		// Wallet is a wallet configuration.
 		Wallet *config.WalletConfig
+
+		// TimePerBlock is an interval which should pass between two successive blocks.
+		TimePerBlock time.Duration
 	}
 )
 
@@ -84,5 +87,6 @@ func NewServerConfig(cfg config.Config) ServerConfig {
 		AttemptConnPeers:  appConfig.AttemptConnPeers,
 		MinPeers:          appConfig.MinPeers,
 		Wallet:            wc,
+		TimePerBlock:      time.Duration(protoConfig.SecondsPerBlock) * time.Second,
 	}
 }
diff --git a/pkg/smartcontract/contract.go b/pkg/smartcontract/contract.go
index 4766659ea..d1c4f7521 100644
--- a/pkg/smartcontract/contract.go
+++ b/pkg/smartcontract/contract.go
@@ -12,7 +12,7 @@ import (
 
 // CreateMultiSigRedeemScript creates a script runnable by the VM.
 func CreateMultiSigRedeemScript(m int, publicKeys keys.PublicKeys) ([]byte, error) {
-	if m <= 1 {
+	if m < 1 {
 		return nil, fmt.Errorf("param m cannot be smaller or equal to 1 got %d", m)
 	}
 	if m > len(publicKeys) {