Large Block Network
The Large Block Network (LBNet from now on) is a testing ground for an 8MB block bitcoin network. It's easy to modify a bitcoin client to be part of the lbnet, and it should be straightfoward, as it was launched using modified versions of the Bitprim and Bitcoin core nodes.
This guide contains instructions on how to connect to the LBNet.
We will create an environment that will allow us to synchronise the network in testnet, install a mining pool and mine over the network.
The installation and configuration of each part, is detailed below and includes, testnet nodes, pool, and miner
Node Testnet Install
Requirements:
The following packages will be needed
- Boost 1.58+
- libdb++ 4.8
- libzmq 4.1.4+
- libssl 1.0.2+
- libevent 2.0.21+
- git
Ubuntu 16.04+
Installing Dependencies:
$ sudo apt-get install build-essential libtool autotools-dev automake pkg-config bsdmainutils
$ sudo apt-get install libzmq3-dev # libzmq
$ sudo apt-get install libboost-all-dev # Boost
$ sudo apt-get install libssl-dev # libssl
$ sudo apt-get install libevent-dev # libevent
$ sudo add-apt-repository ppa:bitcoin/bitcoin
$ sudo apt-get update
$ sudo apt-get install libdb4.8-dev libdb4.8++-dev # libdb
$ mkdir src
$ cd src
$ git clone https://github.com/bitprim/bitcoin/ -b bitcore-lbnet
$ cd bitcoin
$ ./autogen.sh
$ ./configure
$ make
$ make install
Other Distros
Install all dependencies without libdb++ 4.8 in your distro and follow these steps
$ mkdir src
$ cd src
$ git clone https://github.com/bitprim/bitcoin/ -b bitcore-lbnet
$ cd bitcoin
Create a file (we will call it compile.sh)
$ vi compile.sh
Now add following content:
#!/bin/bash
BITCOIN_ROOT=$(pwd)
# Pick some path to install BDB to, here we create a directory within the bitcoin directory
BDB_PREFIX="${BITCOIN_ROOT}/db4"
mkdir -p $BDB_PREFIX
# Fetch the source and verify that it is not tampered with
wget 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz'
echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef db-4.8.30.NC.tar.gz' | sha256sum -c
# -> db-4.8.30.NC.tar.gz: OK
tar -xzvf db-4.8.30.NC.tar.gz
# Build the library and install to our prefix
cd db-4.8.30.NC/build_unix/
# Note: Do a static build so that it can be embedded into the executable, instead of having to find a .so at runtime
../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX
make install
# Configure Bitcoin Core to use our own-built instance of BDB
cd $BITCOIN_ROOT
./autogen.sh
./configure LDFLAGS="-L${BDB_PREFIX}/lib/" CPPFLAGS="-I${BDB_PREFIX}/include/" --with-boost=/usr/local/include/boost --with-boost-libdir=/usr/local/lib
Run the following instruccions:
$ chmod 755 compile.sh
$ ./compile
$ make
$ make install
Node Testnet Configuration
$ mkdir ~/.bitcoin
Use your favourite editor and edit following file ~/.bitcoin/bitcoin.conf
$ vi ~/.bitcoin/bitcoin.conf
Add the following content
testnet=1
txindex=1
addressindex=1
spentindex=1
reindex=1
zmqpubrawtx=tcp://127.0.0.1:28332
zmqpubhashblock=tcp://127.0.0.1:28332
rpcuser=rpcuser # Modify this
rpcpassword=rpcpass # Modify this
If you want leave the bitcoind running in background remember add "daemon=1" in bitcoin.conf
Create a wallet
To create a new bitcoin wallet, run the following line
$ bitcoin-cli getnewaddress
mwTjQwRiny2ss741EAvzFqCfpnhYXai8Zu
$
Pool Install
Install NOMP ( Node Open Mining Portal ) following the steps on this Install guide up to point "Coin Config"
After that we need to configure the pool for bitcoin lbnet
Pool Configuration
$ cd nomp
$ cd pool_configs
Use your favourite editor and edit following file bitcoin.json
$ vi bitcoin.json
Add the following content
{
"enabled": true,
"coin": "bitcoin.json",
"address": "<< YOUR WALLET ADDRESS >>",
"rewardRecipients": {
},
"paymentProcessing": {
"enabled": false,
"paymentInterval": 20,
"minimumPayment": 70,
"daemon": {
"host": "127.0.0.1",
"port": 18332,
"user": "rpcuser",
"password": "rpcpass"
}
},
"ports": {
"4008": {
"diff": 1
},
"4333": {
"diff": 32,
"varDiff": {
"minDiff": 8,
"maxDiff": 512,
"targetTime": 15,
"retargetTime": 90,
"variancePercent": 30
}
},
"4080": {
"diff": 8192,
"varDiff": {
"minDiff": 8192,
"maxDiff": 38400,
"targetTime": 90,
"retargetTime": 18,
"variancePercent": 30
}
}
},
"daemons": [
{
"host": "127.0.0.1",
"port": 18332,
"user": "rpcuser",
"password": "rpcpass"
}
],
"p2p": {
"enabled": false,
"host": "127.0.0.1",
"port": 18333,
"disableTransactions": true
},
"mposMode": {
"enabled": false,
"host": "127.0.0.1",
"port": 3306,
"user": "me",
"password": "mypass",
"database": "btc",
"checkPassword": true,
"autoCreateWorker": false
}
}
Note that you need change the wallet address and the username and password of rpc defined earlier on the Node Testnet Configuration step.
Now you will be able to start nomp
$ cd ..
$ node init.js
We recommend leave app running inside a screen session.
If the command node init.js gives an error, it usually is because one of the following reasons:
- The redis-server is not running, so in a screen session start the redis server
$ redis-server start
- The
nodeversion is not compatible withnomp, to fix it run the next command before theinit.js
$ nvm use 0.10.25
$ node init.js
Miner Install
$ cd src
$ https://github.com/pooler/cpuminer.git
$ cd cpuminer
$ ./autogen.sh
$ ./configure CFLAGS="-O3"
$ make
$ make install
Running Miner
$ minerd -o stratum+tcp://127.0.0.1:4008 -u << YOUR WALLET ADDRESS >> -a sha256d
At this point you have a node running in testnet, a mining pool running and the miner, please if you have any problem, send us a message
Setup a Bitprim node
As an alternative you could run LBNet over the Bitprim client. First you should clone the Bitprim-build repository, and go the the LBnet branch.
git clone https://github.com/bitprim/bitprim-build.git --recursive -b lbnet
Now build the project following the instruccions stated in the the Bitprim-build Readme.
Run Bitprim lbnet
First execute the boostrap script. bitprim-bootstrap-ibd-lbnet.sh located in the bin folder. This will create the files needed by Bitprim-node, and will download the full chain in the background.
Example:
$ sudo /opt/bitprim/bin/bitprim-bootstrap-ibd-lbnet.sh start
Creating Empty Database
22:29:15.904332 INFO [server] ================= startup ==================
22:29:15.904365 WARNING [server] ================= startup ==================
22:29:15.904408 ERROR [server] ================= startup ==================
22:29:15.904429 FATAL [server] ================= startup ==================
22:29:15.904446 INFO [server] Using config file: "/opt/bitprim/cfg/bitprim-node-lbnet-ibd.cfg"
22:29:15.904492 INFO [server] Please wait while initializing "/opt/bitprim/dbs/lbnet" directory...
22:29:21.492262 INFO [server] Completed initialization.
Starting Process
$
If necessary its possible to check status, or to stop the process by using status or stop parameters.
Example:
$ sudo /opt/bitprim/bin/bitprim-bootstrap-ibd-lbnet.sh stop
Stoping Process
Process is running ... wait
Process is running ... wait
Process is running ... wait
Stoping Done
Note that the stop process may take a few minutes.
Normal execution
Run the full node, using the bitprim-node-lbnet-run.sh.
$ sudo /opt/bitprim/bin/bitprim-node-lbnet-run.sh start
If necessary its possible to check status, or to stop the process by using status or stop parameters.
Example:
$ sudo /opt/bitprim/bin/bitprim-node-lbnet-run.sh stop
Request information
Bitprim-explorer can be used to request information using the bitprim-bx-bitcoin-lbnet for the desired network.
Example:
$ /opt/bitprim/bin/bitprim-bx-lbnet.sh fetch-height