opentxs : libopentxs financial cryptography library ( https://github.com/Open-Transactions/opentxs )
otcommon : CMake modules and dev support files for libopentxs and dependent projects ( https://github.com/Open-Transactions/otcommon )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a opentransactions
For Paludis use this rsync : rsync://gentoo.zugaina.org/opentransactions-portage
If you have a problem : ycarus(-at-)zugaina.org