[dogecoinbase]

> They claim full open source but for several years they did not release the server.

Specifically, they didn't publish the source for their server-side from 20 April 2020 to 6 April 2021 [0] while they secretly added a cryptocurrency payment system to which Moxie was a paid technical advisor [1], which Moxie denied they were doing in January 2021 [2].

0: https://www.androidpolice.com/2021/04/06/it-looks-like-signa... (source was published shortly after the publication of that article)

1: https://news.ycombinator.com/item?id=26715013 (comment from founder of MobileCoin)

2: https://www.theverge.com/22249391/signal-app-abuse-messaging...