utcd is a fork of btcd, an alternative full node bitcoin implementation written in Go (golang). utcd implements the Utreexo accumulator into btcd.

This project is currently under active development, but is a work in progress. The current release is only a demo release and should be treated like so.

Go 1.15 or newer.

Without secp256k1:

env CGO_ENABLED=0 go build

With secp256k1:

$ git submodule init
$ git submodule update
$ cd btcec/secp256k1
$ ./autogen.sh
$ ./configure --prefix=$PWD
$ make all
$ make check
$ make install
$ cd ../..
$ go build

Basically just build the secp256k1 library with --prefix set to the btcec/secp256k1 directory and then go build. utcd with secp256k1 isn't supported on Windows.

1: Running a bridgenode. For mainnet, at least 1tb of disk space is required.

./btcd --utreexo

2: Running a coordinator node

./btcd --utreexocsn --utreexomain --nolisten --norpc --blocksonly --connect=IP_OF_THE_BRIDGENODE

3: Running a worker node. Recommended to set --numworkers flag equal to that of the logical cores on your machine. --mainnodeip is also required if the coordinator node is on a remote machine.

./btcd --utreexocsn --utreexoworker --numworkers=1 --nolisten --nocfilters --norpc --blocksonly --connect=IP_OF_THE_BRIDGENODE --mainnodeip=IP_OF_THE_COORDINATOR_NODE

There were three setups completed for the IBD benchmarks:

1. Bridgenode and IBD node on two different machines.

• Set up the bridgenode on a separate machine. Note the public ip address of this machine.
• Run the coordinator node with flag --connect=IP_OF_THE_BRIDGENODE then run the worker node on the same machine also with --connect=IP_OF_THE_BRIDGENODE.
• When the coordinator node is finished with the IBD, it'll display this log 2021-05-11 05:13:22.501 [INF] BTCD: Done verifying all roots
• Subtract the start time from this time.

2. Bridgenode and IBD node on the same machine.

• Set up the bridgenode.
• Run the coordinator node with flag --connect=127.0.0.1 then run the worker node on the same machine also with flag --connect=127.0.0.1
• When the coordinator node is finished with the IBD, it'll display this log 2021-05-11 05:13:22.501 [INF] BTCD: Done verifying all roots
• Subtract the start time from this time.

3. Bridgenode and two IBD nodes for multi-machine IBD.

• Set up the bridgenode on a separate machine. Note the public ip address of this machine.
• Run the coordinator node with flag --connect=IP_OF_THE_BRIDGENODE then run the worker node on the same machine also with --connect=IP_OF_THE_BRIDGENODE. Note the public ip address of this machine. Port 18330 is used to communicate with a remote worker. You can change this port number by editing worker.go. Just find all the 18330s and replace with whatever port you want.
• On a different machine, run a worker node with flag --mainnodeip=IP_OF_THE_COORDINATOR_NODE. Make sure the port 18330 is open on the coordinator node side.
• When the coordinator node is finished with the IBD, it'll display this log 2021-05-11 05:13:22.501 [INF] BTCD: Done verifying all roots
• Subtract the start time from this time.

• irc.libera.chat
• channel #utreexo

utcd is licensed under the copyfree ISC License.