Blockchain developing services.
Most of the algo's can be done within a week. More complicated will let you know.
Payment in 3 parts, first: initial payment a third of the ammount, after delivery and check the second part. The third after the project has been completed.
All deals through the public discord channel: https://discord.gg/YPAz8M3
For other projects done by me, ask in the channel. In this business for 6 months at this moment
Thanks