发布于 2026年9月03日 · 我们于 2026年9月04日 确认该职位仍然有效
US$ 750 – US$ 1.500 (每个项目)
I’m putting together a “flash-style” application that lets adult learners explore core cryptocurrency concepts in a classroom setting. The aim is to keep everything simple enough for first-time students yet authentic enough that they see real-world mechanics in action. Here’s what I need the build to cover: • Data encryption built in from the ground up so students can encrypt and decrypt sample strings and immediately view the results. • Basic blockchain integration that spins up a local test chain, writes a few dummy transactions, and then visualises block creation. • A small, self-contained wallet module that can generate keys, sign test transactions, and show balances—all within the local sandbox, no live coins involved. The tool only has to run on Windows and should install with a single executable. Source code, clear step-by-step setup notes, and a concise tutor guide explaining how each feature maps to classroom topics will wrap up the job nicely. If you’ve built similar crypto demo tools or have existing modules we can adapt, let’s talk so we can get this ready for the next semester.