# Setup Komodo Notary Node

Disclaimer

This guide is here to give guidance and a general understanding on building a Komodo Notary Node server. It describes how to build the two required notary node servers: Mainnet and Third Party(3P). It is possible that some instructions could be deprecated by the time you read it, please refer to https://github.com/KomodoPlatform/dPoW/blob/master/doc (opens new window) for more recent updates.

Note that, whenever the "Main Server" is referenced, it is referring to the server that is used to notarize Komodo and Smart Chains to Litecoin. Whenever "3rd Party server" is referenced, it is referring to the server that is used to notarize any 3rd party coin to Komodo.

Note

Check out Webworker01's nnTools (opens new window) for a simple hands off setup for your notary nodes.

This guide will explain how to setup your Main Server, then go through the process of setting up the 3rd Party Server separately. After that there are instructions on how to create your Notary Node pubkeys, import them to your servers and then, create a basic start script for each server.

If you face problems, please join the #notarynode channel on the Komodo Discord Server (opens new window) for help.

# NN Repo Quick Reference

Note

We recommend the Notary Node Operators to check the Table at https://github.com/komodoplatform/dpow#dpow-asset-status (opens new window) for latest information on the repositories and branches/commits to use for installing chains. If there is contradicting information in this document, treat the information at https://github.com/komodoplatform/dpow#dpow-asset-status (opens new window) as correct and inform the team through the Komodo Discord Server (opens new window) or by submitting a Pull Request (PR). Using the exact repository and branch/tag recommended is very important for the security of the network.

# Both Servers

# Main Server

To notarise KMD -> LTC, the -notary=".litecoin/litecoin.conf" flag is required when launching KMD.

Note

You should have at least 64GB RAM and 32 GB swap space (opens new window) on your main server to avoid daemons crashing due to OOM errors.

# 3rd Party Server (some of these are yet to update - check discord for status - operators can still build and sync the chains to present using the current versions before the actual update needed for S7 is available)

# Requirements

# Hardware

# Main Server

Komodo Notary Node currently only works on Linux. To setup Komodo Notary Node be sure you have a solid server with the following minimum requirements:

  • OS: Debian/Ubuntu LTS x64 - minimal installation with Openssh server (recommended).
  • CPU: A High-Performance CPU (e.g. Xeon, i7/i9, Ryzen, EPYC, etc.)
  • RAM: 64 GB or more
  • Disk: 1 TB SSD or greater
  • Bandwidth: 100 Mbps or higher
  • Location: Within the region where you were elected (refer to Komodo region documentation, but you should already know based on elections)

# 3rd Party Server

At the moment the current minimum server specs are listed below, however, this may change as more 3rd party coins require notarizing.

  • OS: Debian/Ubuntu LTS x64 - minimal installation with Openssh server (recommended).
  • CPU: A High-Performance CPU (e.g. Xeon, i7/i9, Ryzen, EPYC, etc.)
  • RAM: 32 GB or more
  • Disk: 500 GB SSD or greater
  • Bandwidth: 100 Mbps or higher
  • Location: Within the same region as your main server (not required to be in the same datacenter)

# Security

Before doing anything further, please ensure that your server is secure.

Here is a repo with automated scripts to prepare your fresh Ubuntu server with initial setup https://github.com/webworker01/freshubuntu (opens new window)

# Initial Server Setup

The instructions below are required.

# Install Required Dependencies

Main:

sudo apt-get install build-essential pkg-config bsdmainutils libtool libsodium-dev libc6-dev libssl-dev libcurl4-gnutls-dev ncurses-dev zlib1g-dev cmake clang m4 automake autoconf g++-multilib python python3 python3-zmq curl wget jq git unzip libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev -y

3rd Party:

sudo apt-get install libevent-dev libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev build-essential pkg-config libc6-dev m4 g++-multilib autoconf libtool ncurses-dev python3-zmq zlib1g-dev wget curl bsdmainutils automake cmake clang libsodium-dev libcurl4-gnutls-dev libssl-dev git unzip python jq htop -y

# Install nanomsg

Required by iguana

cd ~
git clone https://github.com/nanomsg/nanomsg
cd nanomsg
cmake . -DNN_TESTS=OFF -DNN_ENABLE_DOC=OFF
make -j2
sudo make install
sudo ldconfig

# Install Komodo by compiling it from source

# Clone the source, checkout master branch and compile

cd ~
git clone https://github.com/KomodoPlatform/komodo
cd komodo
git checkout master
./zcutil/fetch-params.sh
./zcutil/build.sh -j$(nproc)

Note

-j$(nproc) uses all the available processor threads while compiling. If you don't want to use all threads, you may specify the number directly like so: -j8 will use only 8 threads; Alternatively, you may like to use -j$(expr $(nproc) - 1), which will use all the available processors except one.

sudo ln -sf /home/$USER/komodo/src/komodo-cli /usr/local/bin/komodo-cli
sudo ln -sf /home/$USER/komodo/src/komodod /usr/local/bin/komodod

# Create the data dir, komodo.conf file and secure it

cd ~
mkdir .komodo
nano ~/.komodo/komodo.conf

Add the following lines to the komodo.conf file and save it (replace rpcuser and rpcpassword)

rpcuser=usernameChangeItToSomethingSecure
rpcpassword=passwordChangeItToSomethingSecure
txindex=1
server=1
daemon=1
rpcworkqueue=256
rpcbind=127.0.0.1
rpcallowip=127.0.0.1
addnode=na.smk.dog
addnode=dev.smk.dog
addnode=na_3p.smk.dog
addnode=dev_3p.smk.dog
addnode=77.75.121.138
addnode=95.213.238.100
addnode=94.130.148.142
addnode=103.6.12.105
addnode=139.99.209.214
addnode=185.130.212.13
addnode=5.9.142.219
addnode=200.25.4.38
addnode=139.99.136.148

Restrict access to the komodo.conf file

chmod 600 ~/.komodo/komodo.conf

# Generate two pubkey, address & WIF's

The mainnet notary node operators have to provide 2 seperate pubkeys, one for your Main Server and one for your 3rd Party Server. This means you will have to generate 2 seed phrases (i.e passphrases) individually which will generate the 2 pubkeys, set of addresses and private keys (WIF). You will need to create your Main pubkey on your Main Server & follow the same actions on your 3rd Party Server for your 3rd Party pubkey. These pubkeys need to be PR'd into your proposal on https://github.com/KomodoPlatform/NotaryNodes (opens new window) soon after an election.

DO NOT IMPORT YOUR MAIN PUBKEY INTO ANY 3RD PARTY DAEMON. For security, you should never enter your seed phrase or private key in any other node than your specific notary node server. If you ever expose a private key for any particular coin, it can be converted to all other coins easily.

# Generating a pubkey

The mainnet notary node operators need to provide 2 sets of pubkey to Kolo when he asks for it (pubkey starts with 02 or 03). Follow this guide to generate all the required info in your own server. You will need the "Compressed Public Key", "Compressed WIF" and "Compressed Address" from the output generated by the script. Based on the default seed used in the genkomodo.php file, we get the following information:

Pubkey: 02a854251adfee222bede8396fed0756985d4ea905f72611740867c7a4ad6488c1
LTC Address: LfK5cYTTSDoSVSYtxkTVv8dGnqXYZRsn86
LTC WIF: 6vCN7rsS1bPFgs98G2PQgcHP2EArh39Un1QDh16YrPrJxCZTthq
KMD Address: RVNKRr2uxPMxJeDwFnTKjdtiLtcs7UzCZn
KMD WIF: UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh
EMC2 Address: EdF2quz8nWrJDwTbbTTieFYUMGfPsVB5dv
EMC2 WIF: T7trfubd9dBEWe3EnFYfj1r1pBueqqCaUUVKKEvLAfQvz3JFsNhs
AYA Address: AVjkMgFfmMZbpFvmTxCcxadnD6g1EdQue3
AYA WIF: T6oxgc9ZYJA1Uvsm31Gb8Mg31hHgLWue7RuqQMjEHUWZEi5TdskL

CHIPS, all Komodo Smart Chains and Komodo source forks like VRSC use the same address and WIF format as Komodo (KMD).

It is recommended that you write down the randomly generated seed (24 words) in a piece of paper and type directly into your server. Do not keep the seed saved in your local computer.

We will import these keys into our coin daemons and validate them later in this guide.

# Setup Iguana

On both servers:

# Clone the dPoW repository and build

cd ~
git clone https://github.com/KomodoPlatform/dPoW -b master
cd dPoW/iguana
./m_notary_build

# Create a pubkey.txt file

You will need to create a pubkey.txt file inside ~/dPoW/iguana directory. This file will be used to start the dPoW process in the dpowassets script later on. pubkey.txt file should contain only the pubkey of the appropriate server. The file should contain only the information in the example below. Change 02a854251adfee222bede8396fed0756985d4ea905f72611740867c7a4ad6488c1 to the appropriate pubkey for the server the file is on.

pubkey=02a854251adfee222bede8396fed0756985d4ea905f72611740867c7a4ad6488c1

# Main Server Iguana

The main server iguana will use the port 7776.

# Create wp_7776

Create wp_7776 file inside the ~/dPoW/iguana directory with the same passphrase you used to generate your Main address/pubkey. The file should look as follows (replace YOUR_VERY_SECURE_PASSPHRASE with your own):

curl --url "http://127.0.0.1:7776" --data "{\"method\":\"walletpassphrase\",\"params\":[\"YOUR_VERY_SECURE_PASSPHRASE\", 9999999]}"

# Make wp_7776 file executable

chmod 700 wp_7776

# 3rd Party Server Iguana

The 3rd party server iguana will use the port 7779.

# Create wp_7779

Create wp_7779 file inside the ~/dPoW/iguana directory with the same passphrase you used to generate your 3rd Party address/pubkey. The file should look as follows (replace YOUR_VERY_SECURE_PASSPHRASE with your own):

curl --url "http://127.0.0.1:7779" --data "{\"method\":\"walletpassphrase\",\"params\":[\"YOUR_VERY_SECURE_PASSPHRASE\", 9999999]}"

# Make wp_7779 file executable

chmod 700 wp_7779

# Main Server Setup

The instructions below are only required on your main server, which is the one that will be notarizing Komodo, all the Smart Chains and runtime forks to Litecoin. The instructions below are for Ubuntu 20.04. If running on Debian 11x, check the alternative instructions at the bottom of this document.

# Litecoin

# Step 1: Clone Litecoin source-code and checkout version 16.x

cd ~
git clone https://github.com/litecoin-project/litecoin --branch 0.16 --single-branch
cd litecoin

# Step 2: Create a build script

Name the script as build.sh inside the ~/litecoin dir for easy compiling and add the contents below to the script. The script will also create symlinks for the binaries at /usr/local/bin/ and for that, you will be asked to provide the sudo password.

#!/bin/bash
# LTC & 3P Coins build script for Ubuntu & Debian (c) Decker
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)
sudo ln -sf /home/$USER/litecoin/src/litecoin-cli /usr/local/bin/litecoin-cli
sudo ln -sf /home/$USER/litecoin/src/litecoind /usr/local/bin/litecoind

# Step 3: Make the script executable and run it

chmod +x build.sh
./build.sh

# Step 4: Create Litecoin data dir, litecoin.conf file and restrict access to it

cd ~
mkdir .litecoin
nano ~/.litecoin/litecoin.conf

Insert the following contents inside the litecoin.conf file and save it. (change the rpcuser and rpcpassword values)

txindex=1
rpcport=9332
rpcuser=litecoinrpcChangeThisToSomethingSecure
rpcpassword=passwordChangeThisToSomethingSecure

Restrict access to the litecoin.conf file

chmod 600 ~/.litecoin/litecoin.conf

# Start the daemons and sync all the chains

For the first time sync, we will run all the coin daemons normally. Make sure you have successfully compiled all the daemons from the above section. We will create a start script later in this guide to start the chains with -pubkey option for notarization.

# Start the coins

komodod &
litecoind &

# Start Komodo and all the Smart Chains

cd ~/komodo/src
./assetchains.old

Now wait for all the chains to finish syncing. This might take about 8-10 hours depending on your machine and internet connection. You can check check sync progress by using tail -f on the debug.log file in the respective coin data directories. Komodo Smart Chains have their own data directory inside the ~/.komodo directory.

Commands to tail debug.log

# LTC
tail -f ~/.litecoin/debug.log
# KMD
tail -f ~/.komodo/debug.log
# SUPERNET
tail -f ~/.komodo/SUPERNET/debug.log

For any other Komodo Smart Chain, use the example of SUPERNET and change the path with the coin name that you are looking for accordingly. You can now wait for all the coins to finish syncing. Just double check the blocks you've downloaded with an explorer to verify.

# Import your main private key

Feel free to import these as the daemons are syncing.

  • Follow the below example to import your main pubkey only into your coin daemons.
komodo-cli importprivkey <KMD PRIVATE KEY>
litecoin-cli importprivkey <LTC PRIVATE KEY>
  • For all other Komodo Smart Chains, use the following command to import privkey
cd ~/komodo/src
./fiat-cli importprivkey <KMD PRIVATE KEY>

This command will import keys into all Smart Chains that are using the main Komodo daemon. This may take some time and will display the coin name and address after each import. You can tail the coin specific debug.log files to check the progress.

# Validate the addresses

After all the addresses are imported, using the respective <COIN>-cli, validate all addresses and make sure the response has ismine:true. If you have ismine:false, your address wasn't imported correctly and dPoW will not work for that coin. Sample command for that is below.

komodo-cli validateaddress RVNKRr2uxPMxJeDwFnTKjdtiLtcs7UzCZn

# Copy the pubkey.txt file that we created from the ~/dPoW/iguana dir

You will need to create a pubkey.txt file inside ~/komodo/src/. This file will be used to start all of your daemons with the -pubkey= parameter in your start script that will be made later in this guide.

cp ~/dPoW/iguana/pubkey.txt ~/komodo/src/pubkey.txt

# Stop All the Coin Daemons Safely

Once you've completed syncing, imported and validated your keys in all your daemons, complete the following.

Never use kill -9 to kill any Coin daemon if you don't like corrupt databases. Always shutdown wallet daemon and iguana gracefully with pkill -15 iguana or use the below RPC commands for wallets.

komodo-cli stop
litecoin-cli stop

For all other Komodo Smart Chains, use the following command to stop the daemons.

cd ~/komodo/src
./fiat-cli stop

# After all the chains' daemons were stopped gracefully, let's restrict access to all the Komodo Smart Chains' .conf files inside ~/.komodo dir

find ~/.komodo -type f -iname "*.conf" -exec chmod 600 {} \;

To complete setting up your main server, go to the Set 'ulimit' parameters on Ubuntu permanently section.

# 3rd Party Server Setup (Pending third party updates)

The instructions below are only required on your 3rd party server, which is the one that will be notarizing 3rd party coins to Komodo.

# Aryacoin (AYA)

# Step 1: Clone AYA source

cd ~
git clone https://github.com/KomodoPlatform/AYAv2
cd AYAv2
git checkout 94e6bc0

# Step 2: Create a build script

Name the script as build.sh inside the ~/AYAv2 dir for easy compiling and add the contents below to the script. The script will also create symlinks for the binaries at /usr/local/bin/ and for that, you will be asked to provide the sudo password.

#!/bin/bash
# LTC & 3P Coins build script for Ubuntu & Debian (c) Decker
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)
sudo ln -sf /home/$USER/AYAv2/src/aryacoin-cli /usr/local/bin/aryacoin-cli
sudo ln -sf /home/$USER/AYAv2/src/aryacoind /usr/local/bin/aryacoind

# Step 3: Make the script executable and run it

chmod +x build.sh
./build.sh

# Step 4: Create AYA data dir, aryacoin.conf file and restrict access to it

cd ~
mkdir .aryacoin
nano ~/.aryacoin/aryacoin.conf

Insert the following contents inside the aryacoin.conf file and save it. (change the rpcuser and rpcpassword values)

server=1
daemon=1
txindex=1
rpcuser=user
rpcpassword=password
bind=127.0.0.1
rpcbind=127.0.0.1
rpcallowip=127.0.0.1
addnode=na_3p.smk.dog
addnode=dev_3p.smk.dog

Restrict access to the aryacoin.conf file

chmod 600 ~/.aryacoin/aryacoin.conf

# Chips

# Step 1: Clone CHIPS source

cd ~
git clone https://github.com/chips-blockchain/chips -b master
cd chips
git checkout 6e7560a

# Step 2: Build

# Debian 10/11 and Ubuntu 20.04

Replace the contents of the build.sh file with the following code

#!/bin/bash
# LTC & 3P Coins build script for Ubuntu & Debian (c) Decker
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)

then, run the script

./build.sh

sudo ln -sf /home/$USER/chips/src/chips-cli /usr/local/bin/chips-cli
sudo ln -sf /home/$USER/chips/src/chipsd /usr/local/bin/chipsd

# Step 4: Create CHIPS data dir, chips.conf file and restrict access to it

cd ~
mkdir .chips
nano ~/.chips/chips.conf

Insert the following contents inside the chips.conf file and save it. (change the rpcuser and rpcpassword values)

server=1
daemon=1
txindex=1
rpcuser=user
rpcpassword=password
addnode=na_3p.smk.dog
addnode=dev_3p.smk.dog
addnode=159.69.23.29
addnode=95.179.192.102
addnode=149.56.29.163
addnode=145.239.149.173
addnode=178.63.53.110
addnode=151.80.108.76
addnode=185.137.233.199
rpcbind=127.0.0.1
rpcallowip=127.0.0.1

Restrict access to the chips.conf file

chmod 600 ~/.chips/chips.conf

# Einsteinium (EMC2)

# Step 1: Clone EMC2 source

cd ~
git clone https://github.com/emc2foundation/einsteinium -b master
cd einsteinium
git checkout c329ae6

# Step 2: Create a build script

Name the script as build.sh inside the ~/einsteinium dir for easy compiling and add the contents below to the script. The script will also create symlinks for the binaries at /usr/local/bin/ and for that, you will be asked to provide the sudo password.

#!/bin/bash
# LTC & 3P Coins build script for Ubuntu & Debian (c) Decker
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)
sudo ln -sf /home/$USER/einsteinium/src/einsteinium-cli /usr/local/bin/einsteinium-cli
sudo ln -sf /home/$USER/einsteinium/src/einsteiniumd /usr/local/bin/einsteiniumd

# Step 3: Make the script executable and run it

chmod +x build.sh
./build.sh

# Step 4: Create EMC2 data dir, einsteinium.conf file and restrict access to it

cd ~
mkdir .einsteinium
nano ~/.einsteinium/einsteinium.conf

Insert the following contents inside the einsteinium.conf file and save it. (change the rpcuser and rpcpassword values)

server=1
daemon=1
txindex=1
rpcuser=user
rpcpassword=password
bind=127.0.0.1
rpcbind=127.0.0.1
rpcallowip=127.0.0.1
addnode=na_3p.smk.dog
addnode=dev_3p.smk.dog

Restrict access to the einsteinium.conf file

chmod 600 ~/.einsteinium/einsteinium.conf

# MarmaraChain (MCL)

# Step 1: Clone MCL source and compile

cd ~
git clone https://github.com/marmarachain/marmara -b master
cd marmara
git checkout a92d834
./zcutil/build.sh -j$(nproc)

# Milevium (MIL)

# Step 1: Clone MIL source and compile

cd ~
git clone https://github.com/emc2foundation/mil -b master
cd mil
git checkout 578bed7

# Step 2: Update the build script

Open the build.sh script inside the ~/mil dir and replace the contents below to the script. The script will also create symlinks for the binaries at /usr/local/bin/ and for that, you will be asked to provide the sudo password.

#!/bin/bash
# LTC & 3P Coins build script for Ubuntu & Debian (c) Decker
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)
sudo ln -sf /home/$USER/mil/src/mil-cli /usr/local/bin/mil-cli
sudo ln -sf /home/$USER/mil/src/mild /usr/local/bin/mild

# Step 3: Make the script executable and run it

chmod +x build.sh
./build.sh

# Step 4: Create MIL data dir, mil.conf file and restrict access to it

cd ~
mkdir .mil
nano ~/.mil/mil.conf

Insert the following contents inside the mil.conf file and save it. (change the rpcuser and rpcpassword values)

server=1
daemon=1
txindex=1
rpcuser=user
rpcpassword=password
bind=127.0.0.1
rpcbind=127.0.0.1
rpcallowip=127.0.0.1
addnode=na_3p.smk.dog
addnode=dev_3p.smk.dog

Restrict access to the mil.conf file

chmod 600 ~/.mil/mil.conf

# Tokel (TKL)

# Step 1: Clone TKL source and compile

cd ~
git clone https://github.com/TokelPlatform/tokel -b tokel
cd tokel
git checkout 65d50d0
./zcutil/build.sh -j$(nproc)

Symlink the compiled binaries

sudo ln -sf /home/$USER/tokel/src/tokeld /usr/local/bin/tokeld
sudo ln -sf /home/$USER/tokel/src/tokel-cli /usr/local/bin/tokel-cli

# VerusCoin (VRSC)

# Step 1: Clone VRSC source and compile

cd ~
git clone https://github.com/VerusCoin/VerusCoin -b master
cd VerusCoin
git checkout master
./zcutil/build.sh -j$(nproc)

Symlink the compiled binaries

sudo ln -sf /home/$USER/VerusCoin/src/verusd /usr/local/bin/verusd
sudo ln -sf /home/$USER/VerusCoin/src/verus /usr/local/bin/verus

# Start the daemons and sync all the chains

For the first time sync, we will run all the coin daemons normally. Make sure you have successfully compiled all the daemons from the above section. We will create a start script later in this guide to start the chains with -pubkey option for notarization.

# Start the coins

komodod &
aryacoind &
chipsd &
einsteiniumd &
~/marmara/src/komodod -ac_name=MCL -ac_supply=2000000 -ac_cc=2 -addnode=5.189.149.242 -addnode=161.97.146.150 -addnode=149.202.158.145 -addressindex=1 -spentindex=1 -ac_marmara=1 -ac_staked=75 -ac_reward=3000000000 &
mild &
tokeld &
verusd &

Now wait for all the chains to finish syncing. This might take about 8-10 hours depending on your machine and internet connection. You can check check sync progress by using tail -f on the debug.log file in the respective coin data directories.

Commands to tail debug.log

# KMD
tail -f ~/.komodo/debug.log
# AYA
tail -f ~/.aryacoin/debug.log
# CHIPS
tail -f ~/.chips/debug.log
# EMC2
tail -f ~/.einsteinium/debug.log
# MCL
tail -f ~/.komodo/MCL/debug.log
# MIL
tail -f ~/.mil/debug.log
# TOKEL
tail -f ~/.komodo/TOKEL/debug.log
# VRSC
tail -f ~/.komodo/VRSC/debug.log

You can now wait for all the coins to finish syncing. Just double check the block you've downloaded with an explorer to verify.

# Import 3rd party private key

Feel free to import your addresses whilst your daemons are syncing.

  • Follow the example below to import your 3rd party pubkey only into your coin daemons.
komodo-cli importprivkey UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh
aryacoin-cli importprivkey T6oxgc9ZYJA1Uvsm31Gb8Mg31hHgLWue7RuqQMjEHUWZEi5TdskL
chips-cli importprivkey UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh
einsteinium-cli importprivkey T7trfubd9dBEWe3EnFYfj1r1pBueqqCaUUVKKEvLAfQvz3JFsNhs
komodo-cli -ac_name=MCL importprivkey UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh
mil-cli importprivkey cSXsCzbmiZUyMCZyPqjYMhLxBxcFBP6tQSLrCpTpfYkvjJEMthcW
tokel-cli importprivkey UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh
verus importprivkey UtrRXqvRFUAtCrCTRAHPH6yroQKUrrTJRmxt2h5U4QTUN1jCxTAh

This may take some time and will display the coin name and address after each import. You can tail the coin specific debug.log files to check the progress.

# Validate the addresses

After all the addresses are imported, using the respective <COIN>-cli, validate all addresses and make sure the response has ismine:true. If you have ismine:false, your address hasn't imported correctly and dPoW will not work for that coin. Sample command for that is below.

komodo-cli validateaddress RVNKRr2uxPMxJeDwFnTKjdtiLtcs7UzCZn

# Copy the pubkey.txt file that we created from the ~/dPoW/iguana dir

You will need to create a pubkey.txt file inside ~/komodo/src/. This file will be used to start all of your daemons with the -pubkey= parameter in your start script that will be made later in this guide.

cp ~/dPoW/iguana/pubkey.txt ~/komodo/src/pubkey.txt

# Stop All the Coin Daemons Safely

Once your daemons have completed syncing, you've imported and validated all your keys, complete the following.

Never use kill -9 to kill any Coin daemon if you don't like corrupt databases. Always shutdown wallet daemon and iguana gracefully with pkill -15 iguana or use the below RPC commands for wallets.

komodo-cli stop
aryacoin-cli stop
chips-cli stop
einsteinium-cli stop
komodo-cli -ac_name=MCL stop
mil-cli stop
tokel-cli stop
verus stop

# Set ulimit parameters on Ubuntu permanently

By default, the number of open files per user in Ubuntu is 1024. In our case this number is too small so we will increase it.

This is done with the ulimit command:

ulimit -a   # see all the kernel parameters
ulimit -n   # see the number of open files
ulimit -n 1000000  #  set the number open files to 1000000

The problem with this way is that the ulimit parameter is only set currently for this command terminal and user. This means that after a reboot you’ll need to set the parameter again. Do the following to set it permanently:

# Edit the /etc/security/limits.conf file

sudo nano /etc/security/limits.conf

add these lines:

* soft nofile 1000000
* hard nofile 1000000

Save and close file

# Edit the /etc/pam.d/common-session file

sudo nano /etc/pam.d/common-session

add this line:

session required pam_limits.so

Save and close the file.

We are done. Now let's stop all our wallet daemons safely with RPC commands and reboot the server using sudo reboot or sudo shutdown -r command.

# Check the values now

ulimit -n

# Create a start Script

We need a start script in the home dir to start Komodo, Smart Chains and all 3rd party coin daemons with the -pubkey option. -pubkey is not required for LTC daemon. All other coins need it.

Here is an example of a Main Server start script that will start Notary easy mining on Komodo as well:

#!/bin/bash
source ~/komodo/src/pubkey.txt
litecoind &
sleep 60
cd komodo/src
./komodod -gen -genproclimit=1 -pubkey=$pubkey -minrelaytxfee=0.000035 -opretmintxfee=0.004 -notary=".litecoin/litecoin.conf" &
sleep 600
./assetchains

Here is an example of a 3rd Party Server start script :

#!/bin/bash
source ~/komodo/src/pubkey.txt
aryacoind -pubkey=$pubkey &
chipsd -pubkey=$pubkey &
einsteiniumd -pubkey=$pubkey &
mild -pubkey=$pubkey &
~/marmara/src/komodod -ac_name=MCL -pubkey=$pubkey -ac_supply=2000000 -ac_cc=2 -addnode=5.189.149.242 -addnode=161.97.146.150 -addnode=149.202.158.145 -addressindex=1 -spentindex=1 -ac_marmara=1 -ac_staked=75 -ac_reward=3000000000 &
~/tokel/src/tokeld -pubkey=$pubkey &
~/komodo/src/komodod -notary -pubkey=$pubkey &
~/VerusCoin/src/verusd -pubkey=$pubkey &

Make the file executable:

chmod +x start

# Execute the script

This may take upto 20-30 minutes maximum depending on your system spec.

cd ~
./start

Make sure all daemons started properly before starting iguana in the next step.

# Start iguana and dPoW process

Once all required daemons are running, we have funds on all coins(DM @kolo with your addresses if you need coins), we can go ahead and start iguana.

# Main Server

cd ~/dPoW/iguana
./m_notary_main

You can use the m_notary script if you wish, but this will issue a git pull command to update the repo, remove old iguana, compile fresh and start the whole process. This can take about 10 minutes maximum to finish. You will see INIT with 64 notaries once the process finishes.

# 3rd Party Server

cd ~/dPoW/iguana
./m_notary_3rdparty

# Address whitelisting

If you are using a whitelist for incoming transactions (recommended to avoid dust attacks!) funding top ups will come from RDragoNHdwovvsDLSLMiAEzEArAD3kq6FN for your Main node, and RHound8PpyhVLfi56dC7MK3ZvvkAmB3bvQ for your 3P node, so add these addresses to your respective whitelists.

# Firewall and Ports

Enable ufw and close all routes except ssh. Then allow p2p ports of all the coins in their respective servers. Allow iguana's p2p ports: 13347 in main server and 13344 in the 3p server.

# NN Scripts

There are many open sourced scripts for managing your Komodo Notary Node servers. If you're having trouble with something, you can have a look at these tools (opens new window), or ask the other NN's, who will show you the scripts they use to overcome issues. With that being said, if you find a way to make a job easier or find a way to better the ecosystem, please let the rest of the NN OPs know, we would love to hear it.

# MM2 Seed node setup

Simple scripts to setup and configure MM2 as a seednode on your 3P server are available at - https://github.com/smk762/nn_mm2_seed (opens new window). The mm2 seed node will also need ports 38890 and 38900 opened on the 3p server.

# Setup for Debian 11

Install the following dependancies:

sudo apt-get install -y tmux dc bc dnsutils speedtest-cli build-essential git libsodium-dev libssl-dev pkg-config autoconf automake bsdmainutils cmake curl g++-multilib htop libboost-all-dev libc6-dev libgtest-dev libtool m4 software-properties-common unzip wget zlib1g-dev binutils-dev clang jq libcurl4-openssl-dev libdb++-dev libevent-dev libexpat1-dev libgnutls28-dev libldns-dev liblzma-dev libnanomsg-dev libncurses-dev libprotobuf-dev libqrencode-dev libreadline-dev libunwind-dev ncurses-dev ntp ntpdate protobuf-compiler python3-pip

Use the template below to create build scripts for coins as needed:

# AnyCoin compile script (q) Decker, 2021-2022
make -C ${PWD}/depends v=1 NO_PROTON=1 NO_QT=1 HOST=$(depends/config.guess) -j$(nproc --all)
./autogen.sh
CXXFLAGS="-g0 -O2" \
CONFIG_SITE="$PWD/depends/$(depends/config.guess)/share/config.site" ./configure --disable-tests --disable-bench --without-miniupnpc --enable-experimental-asm --with-gui=no --disable-bip70
make V=1 -j$(nproc --all)

How to Update Komodo →