REPRO COLDCARD BUILD

REPRO-COLDCARD-BUILD.md

I use DigitalOcean, create a Droplet, verify the build and destroy it afterwards. You can do this on macOS or Linux as well. Use "brew" to install on macOS.

Let's go.

1. Create a Droplet on DigitalOcean

• Ubuntu 20.04 LTS, x64, more RAM = faster build

2. Install Docker, ..

• $ wget https://github.com/docker/machine/releases/download/v0.14.0/docker-machine-$(uname -s)-$(uname -m)
• $ mv docker-machine-Linux-x86_64 docker-machine
• $ chmod +x docker-machine
• $ sudo mv docker-machine /usr/local/bin
• $ docker-machine version
• apt install docker docker.io make Output, similar to "docker-machine version 0.14.0, build 89b8332"

3. Follow Coldcard's instruction

• See https://github.com/Coldcard/firmware#reproducible-builds
• $ git clone https://github.com/Coldcard/firmware.git
• $ git fetch --all --tags
• $ git checkout tags/2023-04-07T1330-v5.1.2 -b 2023-04-07T1330-v5.1.2
• $ cd firmware/stm32
• $ make repro
• enough time for some push-ups, squats, .. and/or to follow me on Twitter https://twitter.com/xavierfiechter
• You should see the "SUCCESS .." message now.

Here is a video of the process described, 2021-09-02, Coldcard v4.1.3: https://www.youtube.com/watch?v=uX_iSYN9RjQ

More builds can be found on my YouTube Channel and on https://bitcoinbinary.org/.

Use make -f MK4-Makefile repro or make -f MK4-Makefile repro, depending on what you intend to build. However, "2022-05-04T1254-v5.0.3-mk3-coldcard.dfu" seems the last mk3 release on the list.

Send me some sats: lnurl1dp68gurn8ghj7ampd3kx2ar0veekzar0wd5xjtnrdakj7tnhv4kxctttdehhwm30d3h82unvwqhhxmrfva58gumrwfjk2m34xgfgqgqd

Thank you.