diff --git a/cumulus/Cargo.lock b/cumulus/Cargo.lock
index bf4bfa2851..8103cee907 100644
--- a/cumulus/Cargo.lock
+++ b/cumulus/Cargo.lock
@@ -65,6 +65,14 @@ dependencies = [
  "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "arc-swap"
 version = "0.3.11"
@@ -100,6 +108,15 @@ dependencies = [
  "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "atty"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "autocfg"
 version = "0.1.6"
@@ -138,6 +155,27 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "bindgen"
+version = "0.47.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cexpr 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clang-sys 0.26.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hashbrown 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "which 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.2.0"
@@ -271,6 +309,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "cc"
 version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "jobserver 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "cexpr"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "cfg-if"
@@ -288,6 +338,30 @@ dependencies = [
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "clang-sys"
+version = "0.26.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "clap"
+version = "2.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "clear_on_drop"
 version = "0.2.3"
@@ -439,6 +513,20 @@ dependencies = [
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cumulus-network"
+version = "0.1.0"
+dependencies = [
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polkadot-primitives 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-statement-table 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-validation 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cumulus-runtime"
 version = "0.1.0"
@@ -593,6 +681,18 @@ dependencies = [
  "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "environmental"
 version = "1.0.2"
@@ -606,6 +706,15 @@ dependencies = [
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "exit-future"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "failure"
 version = "0.1.5"
@@ -631,6 +740,19 @@ name = "fake-simd"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "finality-grandpa"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hashmap_core 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "fixed-hash"
 version = "0.4.0"
@@ -662,6 +784,25 @@ name = "fnv"
 version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "fork-tree"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fs-swap"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -819,6 +960,11 @@ dependencies = [
  "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "glob"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "hash-db"
 version = "0.15.2"
@@ -850,6 +996,11 @@ dependencies = [
  "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "hashmap_core"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "heapsize"
 version = "0.4.2"
@@ -942,6 +1093,14 @@ name = "httparse"
 version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "humantime"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "idna"
 version = "0.1.5"
@@ -983,6 +1142,11 @@ name = "integer-sqrt"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "interleaved-ordered"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "iovec"
 version = "0.1.2"
@@ -1002,6 +1166,16 @@ name = "itoa"
 version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "jobserver"
+version = "0.1.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.28"
@@ -1024,6 +1198,15 @@ dependencies = [
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "kvdb"
+version = "0.1.0"
+source = "git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b40150ded71f57f650067fcbc5c99d7c343e6"
+dependencies = [
+ "elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+]
+
 [[package]]
 name = "kvdb"
 version = "0.1.0"
@@ -1033,6 +1216,15 @@ dependencies = [
  "parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d)",
 ]
 
+[[package]]
+name = "kvdb-memorydb"
+version = "0.1.0"
+source = "git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b40150ded71f57f650067fcbc5c99d7c343e6"
+dependencies = [
+ "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+ "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "kvdb-memorydb"
 version = "0.1.0"
@@ -1042,6 +1234,22 @@ dependencies = [
  "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "kvdb-rocksdb"
+version = "0.1.4"
+source = "git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b40150ded71f57f650067fcbc5c99d7c343e6"
+dependencies = [
+ "elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fs-swap 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "interleaved-ordered 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rocksdb 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -1052,6 +1260,15 @@ name = "libc"
 version = "0.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "libloading"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "libp2p"
 version = "0.12.0"
@@ -1432,6 +1649,17 @@ dependencies = [
  "yamux 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "librocksdb-sys"
+version = "5.18.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bindgen 0.47.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "libsecp256k1"
 version = "0.2.2"
@@ -1475,6 +1703,14 @@ name = "linked-hash-map"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "linked_hash_set"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.1.5"
@@ -1767,6 +2003,11 @@ dependencies = [
  "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parity-bytes"
+version = "0.1.0"
+source = "git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b40150ded71f57f650067fcbc5c99d7c343e6"
+
 [[package]]
 name = "parity-bytes"
 version = "0.1.0"
@@ -1974,6 +2215,11 @@ dependencies = [
  "crypto-mac 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "peeking_take_while"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "percent-encoding"
 version = "1.0.1"
@@ -1989,10 +2235,25 @@ name = "pkg-config"
 version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "polkadot-availability-store"
+version = "0.6.0"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
+dependencies = [
+ "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+ "kvdb-memorydb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+ "kvdb-rocksdb 0.1.4 (git+https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polkadot-primitives 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
 [[package]]
 name = "polkadot-parachain"
 version = "0.6.0"
-source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#04c37c520a5575c20aff1e29518c7ff3153cb527"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
 dependencies = [
  "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2002,13 +2263,14 @@ dependencies = [
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "shared_memory 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "wasmi 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "polkadot-primitives"
 version = "0.6.0"
-source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#04c37c520a5575c20aff1e29518c7ff3153cb527"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
 dependencies = [
  "bitvec 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2026,11 +2288,12 @@ dependencies = [
 [[package]]
 name = "polkadot-runtime"
 version = "0.6.0"
-source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#04c37c520a5575c20aff1e29518c7ff3153cb527"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
 dependencies = [
  "bitvec 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polkadot-parachain 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
  "polkadot-primitives 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2055,6 +2318,7 @@ dependencies = [
  "srml-indices 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "srml-membership 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "srml-offences 1.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "srml-randomness-collective-flip 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "srml-session 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "srml-staking 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "srml-staking-reward-curve 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -2074,6 +2338,49 @@ dependencies = [
  "substrate-wasm-builder-runner 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "polkadot-statement-table"
+version = "0.6.0"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
+dependencies = [
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polkadot-primitives 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
+[[package]]
+name = "polkadot-validation"
+version = "0.6.0"
+source = "git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch#14d5096448d939ffe68a33bce51fcd284be7a620"
+dependencies = [
+ "bitvec 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "exit-future 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polkadot-availability-store 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-parachain 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-primitives 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-runtime 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "polkadot-statement-table 0.6.0 (git+https://github.com/paritytech/polkadot?branch=bkchr-cumulus-branch)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "srml-babe 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-babe-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-finality-grandpa 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-transaction-pool 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-trie 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.5"
@@ -2363,6 +2670,15 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rocksdb"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "librocksdb-sys 5.18.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.16"
@@ -2615,6 +2931,16 @@ dependencies = [
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "slog_derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "smallvec"
 version = "0.6.10"
@@ -2669,7 +2995,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "sr-api-macros"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2681,14 +3007,14 @@ dependencies = [
 [[package]]
 name = "sr-io"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
- "environmental 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-externalities 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-state-machine 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-trie 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -2698,7 +3024,7 @@ dependencies = [
 [[package]]
 name = "sr-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "integer-sqrt 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2717,7 +3043,7 @@ dependencies = [
 [[package]]
 name = "sr-staking-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -2727,7 +3053,7 @@ dependencies = [
 [[package]]
 name = "sr-std"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2735,7 +3061,7 @@ dependencies = [
 [[package]]
 name = "sr-version"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2747,7 +3073,7 @@ dependencies = [
 [[package]]
 name = "srml-authority-discovery"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2764,7 +3090,7 @@ dependencies = [
 [[package]]
 name = "srml-authorship"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2780,7 +3106,7 @@ dependencies = [
 [[package]]
 name = "srml-babe"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2800,7 +3126,7 @@ dependencies = [
 [[package]]
 name = "srml-balances"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2815,7 +3141,7 @@ dependencies = [
 [[package]]
 name = "srml-collective"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2831,7 +3157,7 @@ dependencies = [
 [[package]]
 name = "srml-democracy"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2846,7 +3172,7 @@ dependencies = [
 [[package]]
 name = "srml-elections"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2862,7 +3188,7 @@ dependencies = [
 [[package]]
 name = "srml-executive"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2876,7 +3202,7 @@ dependencies = [
 [[package]]
 name = "srml-finality-tracker"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2891,7 +3217,7 @@ dependencies = [
 [[package]]
 name = "srml-grandpa"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2909,7 +3235,7 @@ dependencies = [
 [[package]]
 name = "srml-im-online"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2927,7 +3253,7 @@ dependencies = [
 [[package]]
 name = "srml-indices"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2944,7 +3270,7 @@ dependencies = [
 [[package]]
 name = "srml-membership"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2958,7 +3284,7 @@ dependencies = [
 [[package]]
 name = "srml-metadata"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2969,7 +3295,7 @@ dependencies = [
 [[package]]
 name = "srml-offences"
 version = "1.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2981,10 +3307,23 @@ dependencies = [
  "srml-system 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
 ]
 
+[[package]]
+name = "srml-randomness-collective-flip"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "srml-support 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "srml-system 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
 [[package]]
 name = "srml-session"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3003,7 +3342,7 @@ dependencies = [
 [[package]]
 name = "srml-staking"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3023,7 +3362,7 @@ dependencies = [
 [[package]]
 name = "srml-staking-reward-curve"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3034,7 +3373,7 @@ dependencies = [
 [[package]]
 name = "srml-sudo"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3048,7 +3387,7 @@ dependencies = [
 [[package]]
 name = "srml-support"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "bitmask 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3068,7 +3407,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3080,7 +3419,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural-tools"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3092,7 +3431,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural-tools-derive"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3102,7 +3441,7 @@ dependencies = [
 [[package]]
 name = "srml-system"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3119,7 +3458,7 @@ dependencies = [
 [[package]]
 name = "srml-timestamp"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3134,7 +3473,7 @@ dependencies = [
 [[package]]
 name = "srml-treasury"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3168,6 +3507,11 @@ dependencies = [
  "generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "strum"
 version = "0.15.0"
@@ -3187,7 +3531,7 @@ dependencies = [
 [[package]]
 name = "substrate-application-crypto"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3199,7 +3543,7 @@ dependencies = [
 [[package]]
 name = "substrate-authority-discovery-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3221,7 +3565,7 @@ dependencies = [
 [[package]]
 name = "substrate-client"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3286,7 +3630,7 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-babe-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "schnorrkel 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3300,7 +3644,7 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-common"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3319,7 +3663,7 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-slots"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3337,7 +3681,7 @@ dependencies = [
 [[package]]
 name = "substrate-executor"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3348,6 +3692,7 @@ dependencies = [
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-io 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "sr-version 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-externalities 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-panic-handler 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-serializer 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3357,10 +3702,50 @@ dependencies = [
  "wasmi 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "substrate-externalities"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "environmental 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "primitive-types 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives-storage 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
+[[package]]
+name = "substrate-finality-grandpa"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "finality-grandpa 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "srml-finality-tracker 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-finality-grandpa-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-network 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-telemetry 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "substrate-finality-grandpa-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3373,7 +3758,7 @@ dependencies = [
 [[package]]
 name = "substrate-header-metadata"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3383,7 +3768,7 @@ dependencies = [
 [[package]]
 name = "substrate-inherents"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3394,7 +3779,7 @@ dependencies = [
 [[package]]
 name = "substrate-keyring"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3403,10 +3788,67 @@ dependencies = [
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
 ]
 
+[[package]]
+name = "substrate-keystore"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "substrate-application-crypto 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "subtle 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "substrate-network"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
+dependencies = [
+ "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked_hash_set 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slog_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-babe-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-peerset 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unsigned-varint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "substrate-offchain-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3415,16 +3857,29 @@ dependencies = [
 [[package]]
 name = "substrate-panic-handler"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
  "backtrace 0.3.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "substrate-peerset"
+version = "2.0.0"
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+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "substrate-phragmen"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
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 dependencies = [
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  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3433,7 +3888,7 @@ dependencies = [
 [[package]]
 name = "substrate-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
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@@ -3457,16 +3912,28 @@ dependencies = [
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  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-bip39 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "substrate-externalities 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives-storage 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "tiny-bip39 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
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  "zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "substrate-primitives-storage"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
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+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
 [[package]]
 name = "substrate-serializer"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
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@@ -3475,7 +3942,7 @@ dependencies = [
 [[package]]
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-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
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@@ -3497,7 +3964,7 @@ dependencies = [
 [[package]]
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-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
 dependencies = [
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@@ -3505,6 +3972,7 @@ dependencies = [
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  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "substrate-externalities 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
  "substrate-panic-handler 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
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  "substrate-trie 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
@@ -3515,7 +3983,7 @@ dependencies = [
 [[package]]
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-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
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 dependencies = [
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@@ -3585,10 +4053,40 @@ dependencies = [
  "trie-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "substrate-transaction-graph"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
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+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
+[[package]]
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+source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#0af06e831a9ccee90866977ef4b01519073ca16d"
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+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+ "substrate-transaction-graph 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)",
+]
+
 [[package]]
 name = "substrate-trie"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
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@@ -3612,7 +4110,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "substrate-wasm-interface"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch#1c7e65fa3618f81880940fbfb779285b646a1617"
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 dependencies = [
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 ]
@@ -3663,6 +4161,22 @@ name = "take_mut"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "termcolor"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "wincolor 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "theban_interval_tree"
 version = "0.7.1"
@@ -3988,6 +4502,11 @@ name = "unicode-segmentation"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-width"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-xid"
 version = "0.1.0"
@@ -4027,6 +4546,11 @@ name = "vcpkg"
 version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "vec_map"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "version_check"
 version = "0.1.5"
@@ -4208,6 +4732,15 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "winapi"
 version = "0.2.8"
@@ -4232,11 +4765,28 @@ name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ws2_32-sys"
 version = "0.2.1"
@@ -4304,16 +4854,19 @@ dependencies = [
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@@ -4364,14 +4920,19 @@ dependencies = [
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 "checksum substrate-finality-grandpa-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-keyring 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-network 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-offchain-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-panic-handler 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-peerset 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-phragmen 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-primitives-storage 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-serializer 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-session 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-state-db 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
@@ -4636,6 +5223,8 @@ dependencies = [
 "checksum substrate-telemetry 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-test-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-test-runtime 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-transaction-graph 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
+"checksum substrate-transaction-pool 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-trie 2.0.0 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-wasm-builder-runner 1.0.3 (git+https://github.com/paritytech/substrate?branch=bkchr-cumulus-branch)" = "<none>"
 "checksum substrate-wasm-builder-runner 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "af21b27fad38b212c1919f700cb0def33c88cde14d22e0d1b17d4521f4eb8b40"
@@ -4646,6 +5235,8 @@ dependencies = [
 "checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum take_mut 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
+"checksum termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "96d6098003bde162e4277c70665bd87c326f5a0c3f3fbfb285787fa482d54e6e"
+"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum theban_interval_tree 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a7b42a5385db9a651628091edcd1d58ac9cb1c92327d8cd2a29bf8e35bdfe4ea"
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
 "checksum time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
@@ -4676,12 +5267,14 @@ dependencies = [
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
 "checksum unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "141339a08b982d942be2ca06ff8b076563cbe223d1befd5450716790d44e2426"
 "checksum unicode-segmentation 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1967f4cdfc355b37fd76d2a954fb2ed3871034eb4f26d60537d88795cfc332a9"
+"checksum unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7007dbd421b92cc6e28410fe7362e2e0a2503394908f417b68ec8d1c364c4e20"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum unsigned-varint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f0023a96687fe169081e8adce3f65e3874426b7886e9234d490af2dc077959"
 "checksum untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "55cd1f4b4e96b46aeb8d4855db4a7a9bd96eeeb5c6a1ab54593328761642ce2f"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
+"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 "checksum wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89c3ce4ce14bdc6fb6beaf9ec7928ca331de5df7e5ea278375642a2f478570d"
@@ -4701,11 +5294,14 @@ dependencies = [
 "checksum webpki 0.19.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4f7e1cd7900a3a6b65a3e8780c51a3e6b59c0e2c55c6dc69578c288d69f7d082"
 "checksum webpki-roots 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c10fa4212003ba19a564f25cd8ab572c6791f99a03cc219c13ed35ccab00de0e"
 "checksum weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3bb43f70885151e629e2a19ce9e50bd730fd436cfd4b666894c9ce4de9141164"
+"checksum which 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b57acb10231b9493c8472b20cb57317d0679a49e0bdbee44b3b803a6473af164"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+"checksum wincolor 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "96f5016b18804d24db43cebf3c77269e7569b8954a8464501c216cc5e070eaa9"
 "checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
 "checksum x25519-dalek 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7ee1585dc1484373cbc1cee7aafda26634665cf449436fd6e24bfd1fad230538"
 "checksum yamux 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "01bd67889938c48f0049fc60a77341039e6c3eaf16cb7693e6ead7c0ba701295"
diff --git a/cumulus/Cargo.toml b/cumulus/Cargo.toml
index 295eec7867..bcf2cc5860 100644
--- a/cumulus/Cargo.toml
+++ b/cumulus/Cargo.toml
@@ -2,6 +2,7 @@
 members = [
   "consensus",
   "runtime",
+  "network",
   "test/runtime",
   "test/client",
 ]
diff --git a/cumulus/network/Cargo.toml b/cumulus/network/Cargo.toml
new file mode 100644
index 0000000000..4fa884b385
--- /dev/null
+++ b/cumulus/network/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "cumulus-network"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+description = "Cumulus-specific networking protocol"
+edition = "2018"
+
+[dependencies]
+# substrate deps
+substrate-client = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-consensus-common = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+sr-primitives = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+
+# polkadot deps
+polkadot-primitives = { git = "https://github.com/paritytech/polkadot", branch = "bkchr-cumulus-branch" }
+polkadot-statement-table = { git = "https://github.com/paritytech/polkadot", branch = "bkchr-cumulus-branch" }
+polkadot-validation = { git = "https://github.com/paritytech/polkadot", branch = "bkchr-cumulus-branch" }
+
+# other deps
+tokio = "0.1.22"
+codec = { package = "parity-scale-codec", version = "1.0.5", features = [ "derive" ] }
diff --git a/cumulus/network/src/lib.rs b/cumulus/network/src/lib.rs
new file mode 100644
index 0000000000..f3a04c1bbb
--- /dev/null
+++ b/cumulus/network/src/lib.rs
@@ -0,0 +1,82 @@
+use substrate_client::error::{Error as ClientError};
+use sr_primitives::traits::{Block as BlockT};
+use substrate_consensus_common::block_validation::{Validation, BlockAnnounceValidator};
+
+use polkadot_primitives::{
+	Hash as PHash, parachain::{CandidateReceipt, ValidatorIndex, ValidatorSignature, ValidatorId},
+};
+use polkadot_statement_table::Statement;
+use polkadot_validation::check_statement;
+
+use codec::{Decode, Encode};
+
+use std::marker::PhantomData;
+
+/// Justification that a parachain block is the parachain block candidate of one of the relay chain
+/// validator.
+#[derive(Encode, Decode)]
+pub struct BlockCandidateJustification {
+	/// Receipt of the parachain block candidate of the signer.
+	candidate_receipt: CandidateReceipt,
+	/// Signer of `signature`.
+	signer: ValidatorIndex,
+	/// Signature of the Candidate statement with `candidate_receipt`.
+	signature: ValidatorSignature,
+	/// The parent block of which the candidate must be include.
+	relay_chain_parent_hash: PHash,
+}
+
+/// Validate that data is a valid justification form a relay-chain validator that the block is a
+/// valid parachain-block candidate.
+pub struct JustifiedBlockAnnounceValidator<B> {
+	authorities: Vec<ValidatorId>,
+	phantom: PhantomData<B>,
+}
+
+impl<B: BlockT> JustifiedBlockAnnounceValidator<B> {
+	pub fn new(authorities: Vec<ValidatorId>) -> Self {
+		Self {
+			authorities,
+			phantom: Default::default(),
+		}
+	}
+}
+
+impl<B: BlockT> BlockAnnounceValidator<B> for JustifiedBlockAnnounceValidator<B> {
+	fn validate(&mut self, header: &B::Header, mut data: &[u8])
+		-> Result<Validation, Box<dyn std::error::Error + Send>>
+	{
+		let justification = BlockCandidateJustification::decode(&mut data)
+			.map_err(|_| Box::new(ClientError::BadJustification(
+				"cannot decode block candidate justification".to_string()
+			)) as Box<_>)?;
+
+		// Check the header in the candidate_receipt match header given header.
+		if header.encode() != justification.candidate_receipt.head_data.0 {
+			return Err(Box::new(ClientError::BadJustification(
+				"block candidate header does not match its justification".to_string()
+			)) as Box<_>)
+		}
+
+		// Check that the signer is a legit validator.
+		let signer = self.authorities.get(justification.signer as usize)
+			.ok_or_else(|| Box::new(ClientError::BadJustification(
+				"block candidate justification signer is a validator index out of bound".to_string()
+			)) as Box<_>)?;
+
+		// Check statement is signed.
+		let statement = Statement::Candidate(justification.candidate_receipt);
+		if !check_statement(
+			&statement,
+			&justification.signature,
+			signer.clone(),
+			&justification.relay_chain_parent_hash
+		) {
+			return Err(Box::new(ClientError::BadJustification(
+				"block candidate justification signature is invalid".to_string()
+			)) as Box<_>)
+		}
+
+		Ok(Validation::Success)
+	}
+}