Past and future releases

Square's security engineering team maintains Subzero. Our recommendation is to use the master branch, which we keep in a stable state. If you would like the peace of mind of using a version of Subzero which corresponds to Square's internal release, you can refer to the table below.

Each internal release upgrades dependencies as well as fixes issues. Given the project's offline nature, each release takes considerable amount of engineering and project management time. As a result, we prefer to perform no more than 1 release per quarter and at least one release every year.

Backwards compatibility

Releases are usually backwards compatible but there is no such guarantee. The easiest way to resolve backwards compatibility issues is to create a fresh wallet with the newer software and use the older version to transfer funds.

Change log

We do not maintain a change log. The commit log contains, hopefully, clear and palpable commit messages.

Releases

Date	Comment
2020Q4	Next planned release
2020Q1	68a7b51bcc128c831abc13758bd6501ce6ee0efe
2019Q1	f6bf788e098bab1cb816152f4fcc4950af9937bb
2018Q4	Code open sourced
2018Q3	n/a
2018Q2	n/a