diff --git a/app/data/compose/docker-compose-datanet-eth.yml b/app/data/compose/docker-compose-datanet-eth.yml
new file mode 100644
index 00000000..4d0dc6ac
--- /dev/null
+++ b/app/data/compose/docker-compose-datanet-eth.yml
@@ -0,0 +1,67 @@
+version: '3.7'
+
+services:
+  datanet-eth-bootnode-geth:
+    hostname: datanet-eth-bootnode-geth
+    env_file:
+      - ../config/datanet-eth/datanet-eth.env
+    environment:
+      RUN_BOOTNODE: "true"
+    image: cerc/datanet-eth-geth:local
+    ports:
+      - "9898"
+      - "30303"
+
+  datanet-eth-geth-1:
+    hostname: datanet-eth-geth-1
+    cap_add:
+      - SYS_PTRACE
+    environment:
+      CERC_REMOTE_DEBUG: "false"
+      CERC_RUN_STATEDIFF: "false"
+      CERC_STATEDIFF_DB_NODE_ID: 1
+    env_file:
+      - ../config/datanet-eth/datanet-eth.env
+    image: cerc/datanet-eth-geth:local
+    healthcheck:
+      test: ["CMD", "nc", "-v", "localhost", "8545"]
+      interval: 30s
+      timeout: 10s
+      retries: 10
+      start_period: 3s
+    depends_on:
+      - datanet-eth-bootnode-geth
+    ports:
+      - "8545"
+      - "40000"
+      - "6060"
+
+  datanet-eth-geth-2:
+    hostname: datanet-eth-geth-2
+    healthcheck:
+      test: ["CMD", "nc", "-v", "localhost", "8545"]
+      interval: 30s
+      timeout: 10s
+      retries: 10
+      start_period: 3s
+    env_file:
+      - ../config/datanet-eth/datanet-eth.env
+    image: cerc/datanet-eth-geth:local
+    depends_on:
+      - datanet-eth-bootnode-geth
+
+  datanet-tx-spammer:
+    restart: always
+    image: cerc/tx-spammer:local
+    environment:
+      ACCOUNTS_CSV_URL: http://datanet-eth-bootnode-geth:9898/accounts.csv
+      ETH_HTTP_PATH: http://datanet-eth-geth-1:8545
+      LOG_LEVEL: info
+      SPAMMER_COMMAND: autoSend
+      ETH_CALL_FREQ: 0
+      ETH_SEND_FREQ: 0
+    depends_on:
+      datanet-eth-bootnode-geth:
+        condition: service_started
+      datanet-eth-geth-1:
+        condition: service_healthy
diff --git a/app/data/config/datanet-eth/datanet-eth.env b/app/data/config/datanet-eth/datanet-eth.env
new file mode 100644
index 00000000..72c402b1
--- /dev/null
+++ b/app/data/config/datanet-eth/datanet-eth.env
@@ -0,0 +1,9 @@
+# The password used to access test accounts (eg, via personal_unlockAccount).  The password is the same for all accounts.
+ACCOUNT_PASSWORD=secret1212
+
+# ENODE of the geth bootnode.
+BOOTNODE_KEY="b0ac22adcad37213c7c565810a50f1772291e7b0ce53fb73e7ec2a3c75bc13b5"
+ENODE="enode://af22c29c316ad069cf48a09a4ad5cf04a251b411e45098888d114c6dd7f489a13786620d5953738762afa13711d4ffb3b19aa5de772d8af72f851f7e9c5b164a@datanet-eth-bootnode-geth:30303"
+
+# JWT is required by the startup script, but won't be used without lighthouse.
+JWT="0x6cdcac3501046a08e186730dd8bd136cfaf0fdc1fc955f6e15ad3068c0ff2af0"
diff --git a/app/data/container-build/cerc-datanet-eth-geth/build.sh b/app/data/container-build/cerc-datanet-eth-geth/build.sh
new file mode 100755
index 00000000..31996ac4
--- /dev/null
+++ b/app/data/container-build/cerc-datanet-eth-geth/build.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+#
+#Build cerc/datanet-eth-geth
+
+set -e
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+# Make sure the "build" directory is empty.
+rm -rf $SCRIPT_DIR/build
+
+# Copy the fixture-net scripts and config.
+cp -rp $SCRIPT_DIR/../cerc-fixturenet-eth-geth $SCRIPT_DIR/build
+
+# Then remove terminal_total_difficulty and replace it with capped_maximum_difficulty.
+# This has two effects:
+#   (1) Disables the Merge (so all we need is geth, not lighthouse).
+#   (2) Maintains a fast block rate, since the difficulty will never exceed the capped value.
+sed -i '' 's/^terminal_total_difficulty:.*$/capped_maximum_difficulty: 1/' $SCRIPT_DIR/build/genesis/el/el-config.yaml
+
+# Build the image.
+docker build -t cerc/datanet-eth-geth:local ${SCRIPT_DIR}/build
+
+# Clean up the "build" directory.
+rm -rf $SCRIPT_DIR/build
diff --git a/app/data/container-build/cerc-fixturenet-eth-geth/genesis/el/build_el.sh b/app/data/container-build/cerc-fixturenet-eth-geth/genesis/el/build_el.sh
index 76b43daf..d52892b8 100755
--- a/app/data/container-build/cerc-fixturenet-eth-geth/genesis/el/build_el.sh
+++ b/app/data/container-build/cerc-fixturenet-eth-geth/genesis/el/build_el.sh
@@ -21,9 +21,11 @@ istanbul_block=`cat $tmp_dir/genesis-config.yaml | grep istanbul_block | awk '{
 berlin_block=`cat $tmp_dir/genesis-config.yaml | grep berlin_block | awk '{ print $2 }'`
 london_block=`cat $tmp_dir/genesis-config.yaml | grep london_block | awk '{ print $2 }'`
 merge_fork_block=`cat $tmp_dir/genesis-config.yaml | grep merge_fork_block | awk '{ print $2 }'`
+capped_maximum_difficulty=`cat $tmp_dir/genesis-config.yaml | grep capped_maximum_difficulty | awk '{ print $2 }'`
+
+python3 ../accounts/mnemonic_to_csv.py $tmp_dir/genesis-config.yaml > ../build/el/accounts.csv
 
 python3 /apps/el-gen/genesis_geth.py $tmp_dir/genesis-config.yaml | \
-  jq ".config.terminalTotalDifficulty=$ttd" | \
   jq ".config.homesteadBlock=$homestead_block" | \
   jq ".config.eip150Block=$eip150_block" | \
   jq ".config.eip155Block=$eip155_block" | \
@@ -35,4 +37,19 @@ python3 /apps/el-gen/genesis_geth.py $tmp_dir/genesis-config.yaml | \
   jq ".config.berlinBlock=$berlin_block" | \
   jq ".config.londonBlock=$london_block" | \
   jq ".config.mergeForkBlock=$merge_fork_block" > ../build/el/geth.json
-python3 ../accounts/mnemonic_to_csv.py $tmp_dir/genesis-config.yaml > ../build/el/accounts.csv
+
+if [ -n "$ttd" ]; then
+  cat ../build/el/geth.json | jq ".config.terminalTotalDifficulty=$ttd" > ../build/el/geth.json.jq
+  mv ../build/el/geth.json.jq ../build/el/geth.json
+else
+  cat ../build/el/geth.json | jq "del(.config.terminalTotalDifficulty)" > ../build/el/geth.json.jq
+  mv ../build/el/geth.json.jq ../build/el/geth.json
+fi
+
+if [ -n "$capped_maximum_difficulty" ]; then
+  cat ../build/el/geth.json | jq ".config.cappedMaximumDifficulty=$capped_maximum_difficulty" > ../build/el/geth.json.jq
+  mv ../build/el/geth.json.jq ../build/el/geth.json
+else
+  cat ../build/el/geth.json | jq "del(.config.cappedMaximumDifficulty)" > ../build/el/geth.json.jq
+  mv ../build/el/geth.json.jq ../build/el/geth.json
+fi
diff --git a/app/data/container-image-list.txt b/app/data/container-image-list.txt
index f22b4543..c9d6b7c0 100644
--- a/app/data/container-image-list.txt
+++ b/app/data/container-image-list.txt
@@ -11,6 +11,7 @@ cerc/ipld-eth-beacon-indexer
 cerc/ipld-eth-server
 cerc/laconicd
 cerc/laconic-registry-cli
+cerc/datanet-eth-geth
 cerc/fixturenet-eth-geth
 cerc/fixturenet-eth-lighthouse
 cerc/watcher-mobymask
diff --git a/app/data/pod-list.txt b/app/data/pod-list.txt
index 64dd0412..7d05aef5 100644
--- a/app/data/pod-list.txt
+++ b/app/data/pod-list.txt
@@ -8,6 +8,7 @@ ipld-eth-server
 lighthouse
 laconicd
 fixturenet-laconicd
+datanet-eth
 fixturenet-eth
 fixturenet-eth-metrics
 watcher-mobymask