This marks btcd's first release in nearly 5 years! Long live btcd ✊!!! One major change with this release, and all releases going forward for the foreseeable future is that Olaoluwa Osuntokun (roasbeef) is now the primary maintainer of btcd. As a result, rather than the existing conformal keys, roasbeef's key will be used in place for signing all git tags and releases. Going forward, our goal is to adopt a regular 3-month (or so) release cycle as needed.

Verifying the Release

In order to verify the release, you'll need to have gpg or gpg2 installed on your system. Once you've obtained a copy (and hopefully verified that as well), you'll first need to import the keys that have signed this release if you haven't done so already:

curl https://keybase.io/roasbeef/pgp_keys.asc | gpg --import

Once you have the required PGP keys, you can verify the release (assuming manifest-v0.20.0-beta.txt and manifest-v0.20.0-beta.txt.sig are in the current directory) with:

gpg --verify manifest-v0.20.0-beta.txt.sig

You should see the following if the verification was successful:

gpg: assuming signed data in 'manifest-v0.20.0-beta.txt'
gpg: Signature made Tue Oct 22 15:51:12 2019 PDT
gpg:                using RSA key 4AB7F8DA6FAEBB3B70B1F903BC13F65E2DC84465
gpg: Good signature from "Olaoluwa Osuntokun <laolu32@gmail.com>" [ultimate]

That will verify the signature of the manifest file, which ensures integrity and authenticity of the archive you've downloaded locally containing the binaries. Next, depending on your operating system, you should then re-compute the sha256 hash of the archive with shasum -a 256 <filename>, compare it with the corresponding one in the manifest file, and ensure they match exactly.

Verifying the Release Binaries

As of this release, our release binaries are fully reproducible thanks to go1.13! Third parties are now able to verify that the release binaries were produced properly without having to trust the release manager(s). See our reproducible builds guide for how this can be achieved. The release binaries are compiled with go1.13.1, which is required by verifiers to arrive at the same ones.

Finally, you can also verify the tag itself with the following command:

git verify-tag v0.20.0-beta

You should see something along the lines of this in the case of a valid tag:

gpg: Signature made Tue 15 Oct 2019 08:13:46 AM UTC using RSA key ID 2DC84465
gpg: Good signature from "Olaoluwa Osuntokun <laolu32@gmail.com>"
Primary key fingerprint: 9769 140D 255C 759B 1EB7  7B46 A963 87A5 7CAA E94D
     Subkey fingerprint: 4AB7 F8DA 6FAE BB3B 70B1  F903 BC13 F65E 2DC8 4465

Building the Contained Release

Users are able to rebuild the target release themselves without having to fetch any of the dependencies. In order to do so, assuming that vendor.tar.gz and btcd-source-v0.20.0-beta.tar.gz are in the current directory, follow these steps:

tar -xvzf vendor.tar.gz
tar -xvzf btcd-source-v0.20.0.tar.gz
GO111MODULE=on go install -v -mod=vendor 
GO111MODULE=on go install -v -mod=vendor ./cmd/btcctl

The -mod=vendor flag tells the go build command that it doesn't need to fetch the dependencies, and instead, they're all enclosed in the local vendor directory.

Additionally, it's also possible to use the enclosed release.sh script to bundle a release for a specific system like so:

BTCBUILDSYS="linux-arm64 darwin-amd64" ./build/release/release.sh

Release Notes

Rather than summarize 5 years of development in the release notes below, we've opted to mention only the most major features. Future releases will return to our prior method of enumerating each change in relevant areas of the codebase/system.

Changelog

The full list of changes since v0.12.0-beta can be found here:

• https://github.com/btcsuite/btcd/compare/BTCD_0_12_0_BETA...v0.20.0-beta

Contributors (Alphabetical Order)

Albert Puigsech Galicia Alex Akselrod Alex Bosworth Alex Manuskin Alok Menghrajani Anatoli Babenia Andy Weidenbaum Calvin McAnarney Chris Martin Chris Pacia Chris Shepherd Conner Fromknecht Craig Sturdy Cédric Félizard Daniel Krawisz Daniel Martí Daniel McNally Dario Nieuwenhuis Dave Collins David Hill David de Kloet GeertJohan Grace Noah Gregory Trubetskoy Hector Jusforgues Iskander (Alex) Sharipov Janus Troelsen Jasper Javed Khan Jeremiah Goyette Jim Posen Jimmy Song Johan T. Halseth John C. Vernaleo Jonathan Gillham Josh Rickmar Jon Underwood Jonathan Zeppettini Jouke Hofman Julian Meyer Kai Kamil Slowikowski Kefkius Leonardo Lazzaro Marco Peereboom Marko Bencun Mawueli Kofi Adzoe Michail Kargakis Mitchell Paull Nathan Bass Nicola 'tekNico' Larosa Olaoluwa Osuntokun Pedro Martelletto Ricardo Velhote Roei Erez Ruben de Vries Rune T. Aune Sad Pencil Shuai Qi Steven Roose Tadge Dryja Tibor Bősze Tomás Senart Tzu-Jung Lee Vadym Popov Waldir Pimenta Wilmer Paulino benma danda dskloet esemplastic jadeblaquiere nakagawa preminem qshuai