diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..6b5e018
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,99 @@
+[submodule "vendor/nimbus-build-system"]
+	path = vendor/nimbus-build-system
+	url = https://github.com/status-im/nimbus-build-system.git
+[submodule "vendor/nim-libp2p"]
+	path = vendor/nim-libp2p
+	url = https://github.com/vacp2p/nim-libp2p.git
+[submodule "vendor/nimcrypto"]
+	path = vendor/nimcrypto
+	url = https://github.com/cheatfate/nimcrypto.git
+[submodule "vendor/nim-chronicles"]
+	path = vendor/nim-chronicles
+	url = https://github.com/status-im/nim-chronicles.git
+[submodule "vendor/nim-metrics"]
+	path = vendor/nim-metrics
+	url = https://github.com/status-im/nim-metrics.git
+[submodule "vendor/nim-secp256k1"]
+	path = vendor/nim-secp256k1
+	url = https://github.com/status-im/nim-secp256k1.git
+[submodule "nim-stew"]
+	path = nim-stew
+	url = https://github.com/status-im/nim-stew.git
+[submodule "vendor/questionable"]
+	path = vendor/questionable
+	url = https://github.com/status-im/questionable.git
+[submodule "vendor/upraises"]
+	path = vendor/upraises
+	url = https://github.com/markspanbroek/upraises.git
+[submodule "vendor/asynctest"]
+	path = vendor/asynctest
+	url = https://github.com/status-im/asynctest.git
+[submodule "vendor/nim-confutils"]
+	path = vendor/nim-confutils
+	url = https://github.com/status-im/nim-confutils.git
+[submodule "vendor/nim-nat-traversal"]
+	path = vendor/nim-nat-traversal
+	url = https://github.com/status-im/nim-nat-traversal.git
+[submodule "vendor/nim-libbacktrace"]
+	path = vendor/nim-libbacktrace
+	url = https://github.com/status-im/nim-libbacktrace.git
+[submodule "vendor/nim-chronos"]
+	path = vendor/nim-chronos
+	url = https://github.com/status-im/nim-chronos.git
+[submodule "vendor/nim-json-serialization"]
+	path = vendor/nim-json-serialization
+	url = https://github.com/status-im/nim-json-serialization.git
+[submodule "vendor/nim-serialization"]
+	path = vendor/nim-serialization
+	url = https://github.com/status-im/nim-serialization.git
+[submodule "vendor/nim-bearssl"]
+	path = vendor/nim-bearssl
+	url = https://github.com/status-im/nim-bearssl.git
+[submodule "vendor/stint"]
+	path = vendor/stint
+	url = https://github.com/status-im/stint.git
+[submodule "vendor/nim-unittest2"]
+	path = vendor/nim-unittest2
+	url = https://github.com/status-im/nim-unittest2.git
+[submodule "vendor/nim-websock"]
+	path = vendor/nim-websock
+	url = https://github.com/status-im/nim-websock.git
+[submodule "vendor/nim-contract-abi"]
+	path = vendor/nim-contract-abi
+	url = https://github.com/status-im/nim-contract-abi
+[submodule "vendor/nim-json-rpc"]
+	path = vendor/nim-json-rpc
+	url = https://github.com/status-im/nim-json-rpc
+[submodule "vendor/nim-ethers"]
+	path = vendor/nim-ethers
+	url = https://github.com/status-im/nim-ethers
+[submodule "vendor/lrucache.nim"]
+	path = vendor/lrucache.nim
+	url = https://github.com/status-im/lrucache.nim
+[submodule "vendor/nim-blscurve"]
+	path = vendor/nim-blscurve
+	url = https://github.com/status-im/nim-blscurve.git
+[submodule "vendor/nim-codex-dht"]
+	path = vendor/nim-codex-dht
+	url = https://github.com/codex-storage/nim-codex-dht.git
+[submodule "vendor/nim-eth"]
+	path = vendor/nim-eth
+	url = https://github.com/status-im/nim-eth
+[submodule "vendor/codex-contracts-eth"]
+	path = vendor/codex-contracts-eth
+	url = https://github.com/status-im/codex-contracts-eth
+[submodule "vendor/nim-protobuf-serialization"]
+	path = vendor/nim-protobuf-serialization
+	url = https://github.com/status-im/nim-protobuf-serialization
+[submodule "vendor/nim-results"]
+	path = vendor/nim-results
+	url = https://github.com/arnetheduck/nim-results
+[submodule "vendor/nim-testutils"]
+	path = vendor/nim-testutils
+	url = https://github.com/status-im/nim-testutils
+[submodule "vendor/nim-serde"]
+	path = vendor/nim-serde
+	url = https://github.com/codex-storage/nim-serde.git
+[submodule "vendor/nph"]
+	path = vendor/nph
+	url = https://github.com/arnetheduck/nph.git
diff --git a/build.nims b/build.nims
new file mode 100644
index 0000000..8866032
--- /dev/null
+++ b/build.nims
@@ -0,0 +1,123 @@
+mode = ScriptMode.Verbose
+
+import std/os except commandLineParams
+
+### Helper functions
+proc buildBinary(name: string, srcDir = "./", params = "", lang = "c") =
+  if not dirExists "build":
+    mkDir "build"
+
+  # allow something like "nim nimbus --verbosity:0 --hints:off nimbus.nims"
+  var extra_params = params
+  when compiles(commandLineParams):
+    for param in commandLineParams():
+      extra_params &= " " & param
+  else:
+    for i in 2 ..< paramCount():
+      extra_params &= " " & paramStr(i)
+
+  let
+    # Place build output in 'build' folder, even if name includes a longer path.
+    outName = os.lastPathPart(name)
+    cmd =
+      "nim " & lang & " --out:build/" & outName & " " & extra_params & " " & srcDir &
+      name & ".nim"
+
+  exec(cmd)
+
+proc test(name: string, srcDir = "tests/", params = "", lang = "c") =
+  buildBinary name, srcDir, params
+  exec "build/" & name
+
+task codex, "build codex binary":
+  buildBinary "codex",
+    params = "-d:chronicles_runtime_filtering -d:chronicles_log_level=TRACE"
+
+task toolsCirdl, "build tools/cirdl binary":
+  buildBinary "tools/cirdl/cirdl"
+
+task testCodex, "Build & run Codex tests":
+  test "testCodex", params = "-d:codex_enable_proof_failures=true"
+
+task testContracts, "Build & run Codex Contract tests":
+  test "testContracts"
+
+task testIntegration, "Run integration tests":
+  buildBinary "codex",
+    params =
+      "-d:chronicles_runtime_filtering -d:chronicles_log_level=TRACE -d:codex_enable_proof_failures=true"
+  test "testIntegration"
+  # use params to enable logging from the integration test executable
+  # test "testIntegration", params = "-d:chronicles_sinks=textlines[notimestamps,stdout],textlines[dynamic] " &
+  #   "-d:chronicles_enabled_topics:integration:TRACE"  
+
+task build, "build codex binary":
+  codexTask()
+
+task test, "Run tests":
+  testCodexTask()
+
+task testTools, "Run Tools tests":
+  toolsCirdlTask()
+  test "testTools"
+
+task testAll, "Run all tests (except for Taiko L2 tests)":
+  testCodexTask()
+  testContractsTask()
+  testIntegrationTask()
+  testToolsTask()
+
+task testTaiko, "Run Taiko L2 tests":
+  codexTask()
+  test "testTaiko"
+
+import strutils
+import os
+
+task coverage, "generates code coverage report":
+  var (output, exitCode) = gorgeEx("which lcov")
+  if exitCode != 0:
+    echo "  ************************** ⛔️ ERROR ⛔️ **************************"
+    echo "  **   ERROR: lcov not found, it must be installed to run code   **"
+    echo "  **   coverage locally                                          **"
+    echo "  *****************************************************************"
+    quit 1
+
+  (output, exitCode) = gorgeEx("gcov --version")
+  if output.contains("Apple LLVM"):
+    echo "  ************************* ⚠️ WARNING ⚠️  *************************"
+    echo "  **   WARNING: Using Apple's llvm-cov in place of gcov, which   **"
+    echo "  **   emulates an old version of gcov (4.2.0) and therefore     **"
+    echo "  **   coverage results will differ than those on CI (which      **"
+    echo "  **   uses a much newer version of gcov).                       **"
+    echo "  *****************************************************************"
+
+  var nimSrcs = " "
+  for f in walkDirRec("codex", {pcFile}):
+    if f.endswith(".nim"):
+      nimSrcs.add " " & f.absolutePath.quoteShell()
+
+  echo "======== Running Tests ======== "
+  test "coverage",
+    srcDir = "tests/",
+    params =
+      " --nimcache:nimcache/coverage -d:release -d:codex_enable_proof_failures=true"
+  exec("rm nimcache/coverage/*.c")
+  rmDir("coverage")
+  mkDir("coverage")
+  echo " ======== Running LCOV ======== "
+  exec(
+    "lcov --capture --keep-going --directory nimcache/coverage --output-file coverage/coverage.info"
+  )
+  exec(
+    "lcov --extract coverage/coverage.info --keep-going --output-file coverage/coverage.f.info " &
+      nimSrcs
+  )
+  echo " ======== Generating HTML coverage report ======== "
+  exec("genhtml coverage/coverage.f.info --keep-going --output-directory coverage/report ")
+  echo " ======== Coverage report Done ======== "
+
+task showCoverage, "open coverage html":
+  echo " ======== Opening HTML coverage report in browser... ======== "
+  if findExe("open") != "":
+    exec("open coverage/report/index.html")
diff --git a/env.sh b/env.sh
new file mode 100644
index 0000000..697a426
--- /dev/null
+++ b/env.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# We use ${BASH_SOURCE[0]} instead of $0 to allow sourcing this file
+# and we fall back to a Zsh-specific special var to also support Zsh.
+REL_PATH="$(dirname ${BASH_SOURCE[0]:-${(%):-%x}})"
+ABS_PATH="$(cd ${REL_PATH}; pwd)"
+source ${ABS_PATH}/vendor/nimbus-build-system/scripts/env.sh
diff --git a/nim-stew b/nim-stew
new file mode 160000
index 0000000..58abb48
--- /dev/null
+++ b/nim-stew
@@ -0,0 +1 @@
+Subproject commit 58abb4891f97c6cdc07335e868414e0c7b736c68
diff --git a/vendor/asynctest b/vendor/asynctest
new file mode 160000
index 0000000..572c897
--- /dev/null
+++ b/vendor/asynctest
@@ -0,0 +1 @@
+Subproject commit 572c897a4e1177e905105a3bafe8c5573d9bae83
diff --git a/vendor/codex-contracts-eth b/vendor/codex-contracts-eth
new file mode 160000
index 0000000..0bf1385
--- /dev/null
+++ b/vendor/codex-contracts-eth
@@ -0,0 +1 @@
+Subproject commit 0bf138512b7c1c3b8d77c48376e47f702e47106c
diff --git a/vendor/lrucache.nim b/vendor/lrucache.nim
new file mode 160000
index 0000000..8767ade
--- /dev/null
+++ b/vendor/lrucache.nim
@@ -0,0 +1 @@
+Subproject commit 8767ade0b76ea5b5d4ce24a52d0c58a6ebeb66cd
diff --git a/vendor/nim-bearssl b/vendor/nim-bearssl
new file mode 160000
index 0000000..667b404
--- /dev/null
+++ b/vendor/nim-bearssl
@@ -0,0 +1 @@
+Subproject commit 667b40440a53a58e9f922e29e20818720c62d9ac
diff --git a/vendor/nim-blscurve b/vendor/nim-blscurve
new file mode 160000
index 0000000..de2d3c7
--- /dev/null
+++ b/vendor/nim-blscurve
@@ -0,0 +1 @@
+Subproject commit de2d3c79264bba18dbea469c8c5c4b3bb3c8bc55
diff --git a/vendor/nim-chronicles b/vendor/nim-chronicles
new file mode 160000
index 0000000..81a4a7a
--- /dev/null
+++ b/vendor/nim-chronicles
@@ -0,0 +1 @@
+Subproject commit 81a4a7a360c78be9c80c8f735c76b6d4a1517304
diff --git a/vendor/nim-chronos b/vendor/nim-chronos
new file mode 160000
index 0000000..c04576d
--- /dev/null
+++ b/vendor/nim-chronos
@@ -0,0 +1 @@
+Subproject commit c04576d829b8a0a1b12baaa8bc92037501b3a4a0
diff --git a/vendor/nim-codex-dht b/vendor/nim-codex-dht
new file mode 160000
index 0000000..f6eef1a
--- /dev/null
+++ b/vendor/nim-codex-dht
@@ -0,0 +1 @@
+Subproject commit f6eef1ac95c70053b2518f1e3909c909ed8701a6
diff --git a/vendor/nim-confutils b/vendor/nim-confutils
new file mode 160000
index 0000000..cb858a2
--- /dev/null
+++ b/vendor/nim-confutils
@@ -0,0 +1 @@
+Subproject commit cb858a27f4347be949d10ed74b58713d687936d2
diff --git a/vendor/nim-contract-abi b/vendor/nim-contract-abi
new file mode 160000
index 0000000..842f489
--- /dev/null
+++ b/vendor/nim-contract-abi
@@ -0,0 +1 @@
+Subproject commit 842f48910be4f388bcbf8abf1f02aba1d5e2ee64
diff --git a/vendor/nim-eth b/vendor/nim-eth
new file mode 160000
index 0000000..dcfbc42
--- /dev/null
+++ b/vendor/nim-eth
@@ -0,0 +1 @@
+Subproject commit dcfbc4291d39b59563828c3e32be4d51a2f25931
diff --git a/vendor/nim-ethers b/vendor/nim-ethers
new file mode 160000
index 0000000..bbced46
--- /dev/null
+++ b/vendor/nim-ethers
@@ -0,0 +1 @@
+Subproject commit bbced4673316763c6ef931b4d0a08069cde2474c
diff --git a/vendor/nim-json-rpc b/vendor/nim-json-rpc
new file mode 160000
index 0000000..2743721
--- /dev/null
+++ b/vendor/nim-json-rpc
@@ -0,0 +1 @@
+Subproject commit 274372132de497e6b7b793c9d5d5474b71bf80a2
diff --git a/vendor/nim-json-serialization b/vendor/nim-json-serialization
new file mode 160000
index 0000000..6eadb6e
--- /dev/null
+++ b/vendor/nim-json-serialization
@@ -0,0 +1 @@
+Subproject commit 6eadb6e939ffa7882ff5437033c11a9464d3385c
diff --git a/vendor/nim-libbacktrace b/vendor/nim-libbacktrace
new file mode 160000
index 0000000..6da0cda
--- /dev/null
+++ b/vendor/nim-libbacktrace
@@ -0,0 +1 @@
+Subproject commit 6da0cda88ab7780bd5fd342327adb91ab84692aa
diff --git a/vendor/nim-libp2p b/vendor/nim-libp2p
new file mode 160000
index 0000000..c08d807
--- /dev/null
+++ b/vendor/nim-libp2p
@@ -0,0 +1 @@
+Subproject commit c08d80734989b028b3d1705f2188d783a343aac0
diff --git a/vendor/nim-metrics b/vendor/nim-metrics
new file mode 160000
index 0000000..cacfdc1
--- /dev/null
+++ b/vendor/nim-metrics
@@ -0,0 +1 @@
+Subproject commit cacfdc12454a0804c65112b9f4f50d1375208dcd
diff --git a/vendor/nim-nat-traversal b/vendor/nim-nat-traversal
new file mode 160000
index 0000000..6508ce7
--- /dev/null
+++ b/vendor/nim-nat-traversal
@@ -0,0 +1 @@
+Subproject commit 6508ce75060878dfcdfa21f94721672c69a1823b
diff --git a/vendor/nim-protobuf-serialization b/vendor/nim-protobuf-serialization
new file mode 160000
index 0000000..5a31137
--- /dev/null
+++ b/vendor/nim-protobuf-serialization
@@ -0,0 +1 @@
+Subproject commit 5a31137a82c2b6a989c9ed979bb636c7a49f570e
diff --git a/vendor/nim-results b/vendor/nim-results
new file mode 160000
index 0000000..df8113d
--- /dev/null
+++ b/vendor/nim-results
@@ -0,0 +1 @@
+Subproject commit df8113dda4c2d74d460a8fa98252b0b771bf1f27
diff --git a/vendor/nim-secp256k1 b/vendor/nim-secp256k1
new file mode 160000
index 0000000..2acbbdc
--- /dev/null
+++ b/vendor/nim-secp256k1
@@ -0,0 +1 @@
+Subproject commit 2acbbdcc0e63002a013fff49f015708522875832
diff --git a/vendor/nim-serde b/vendor/nim-serde
new file mode 160000
index 0000000..5ced7c8
--- /dev/null
+++ b/vendor/nim-serde
@@ -0,0 +1 @@
+Subproject commit 5ced7c88b97d99c582285ce796957fb71fd42434
diff --git a/vendor/nim-serialization b/vendor/nim-serialization
new file mode 160000
index 0000000..2086c99
--- /dev/null
+++ b/vendor/nim-serialization
@@ -0,0 +1 @@
+Subproject commit 2086c99608b4bf472e1ef5fe063710f280243396
diff --git a/vendor/nim-testutils b/vendor/nim-testutils
new file mode 160000
index 0000000..4d37244
--- /dev/null
+++ b/vendor/nim-testutils
@@ -0,0 +1 @@
+Subproject commit 4d37244f9f5e1acd8592a4ceb5c3fc47bc160181
diff --git a/vendor/nim-unittest2 b/vendor/nim-unittest2
new file mode 160000
index 0000000..845b6af
--- /dev/null
+++ b/vendor/nim-unittest2
@@ -0,0 +1 @@
+Subproject commit 845b6af28b9f68f02d320e03ad18eccccea7ddb9
diff --git a/vendor/nim-websock b/vendor/nim-websock
new file mode 160000
index 0000000..ebe308a
--- /dev/null
+++ b/vendor/nim-websock
@@ -0,0 +1 @@
+Subproject commit ebe308a79a7b440a11dfbe74f352be86a3883508
diff --git a/vendor/nimbus-build-system b/vendor/nimbus-build-system
new file mode 160000
index 0000000..0be0663
--- /dev/null
+++ b/vendor/nimbus-build-system
@@ -0,0 +1 @@
+Subproject commit 0be0663e1af76e869837226a4ef3e586fcc737d3
diff --git a/vendor/nimcrypto b/vendor/nimcrypto
new file mode 160000
index 0000000..dc07e30
--- /dev/null
+++ b/vendor/nimcrypto
@@ -0,0 +1 @@
+Subproject commit dc07e3058c6904eef965394493b6ea99aa2adefc
diff --git a/vendor/nph b/vendor/nph
new file mode 160000
index 0000000..f1f0477
--- /dev/null
+++ b/vendor/nph
@@ -0,0 +1 @@
+Subproject commit f1f047760c6cb38d5c55d0ddb29b57a9c008a976
diff --git a/vendor/questionable b/vendor/questionable
new file mode 160000
index 0000000..47692e0
--- /dev/null
+++ b/vendor/questionable
@@ -0,0 +1 @@
+Subproject commit 47692e0d923ada8f7f731275b2a87614c0150987
diff --git a/vendor/stint b/vendor/stint
new file mode 160000
index 0000000..5c5e01c
--- /dev/null
+++ b/vendor/stint
@@ -0,0 +1 @@
+Subproject commit 5c5e01cef089a261474b7abfe246b37447aaa8ed
diff --git a/vendor/upraises b/vendor/upraises
new file mode 160000
index 0000000..bc26289
--- /dev/null
+++ b/vendor/upraises
@@ -0,0 +1 @@
+Subproject commit bc2628989b63854d980e92dadbd58f83e34b6f25