According to Webarchive, https://tukaani.org/contact.html changed very recently (between 11/02/2024 and 29/02/2024) to add Lasse Collin's PGP key fingerprint. That timing is weird, considering his git activity at that time is almost non existent. Although, i checked, this key existed back in 2012.
Denvercoder9|1 year ago
Are you looking at the same repositories I am? He's made 88 commits to xz in that time period, two-thirds of the total.