Building a Bitcoin hashrate rental platform as a solo developer: what the money logic taught me
I run a small company that rents out Bitcoin mining hashrate from a real machine hosted in a professional datacenter. Clients buy a number of TH/s, and every day the mining pool pays them their share directly to their own wallet. I built the whole platform alone: the website, the client dashboard, the daily distribution job and the admin tools. This post is not a pitch. It is what I learned…
A solo developer has created a platform to rent Bitcoin mining hashrate, and shares what he learned during the process. The platform allows clients to purchase a specific amount of TH/s, and daily, the mining pool pays them directly to their own wallet. The developer built the entire platform on their own, including the website, client dashboard, daily distribution job, and admin tools.
Key lessons learned include:
1. Before refactoring money-related code, create a "characterization" test that runs all code paths with a fake database and records every action in a reference file. This ensures the refactored code produces identical results byte-for-byte. A single mistake in the refactored code could cost real clients money.
2. Tests must never reach real services. Mock every external component, including the database, pool API, Discord, and mailer. Even tests that pass on a developer's machine can fail on production due to environmental differences. Be thorough and test against the real services.
3. Monitor the cumulative ratio of real earnings vs theoretical earnings daily. Small variations are normal due to unpredictable factors like pool luck and network difficulty. However, when the ratio drifts significantly, it indicates a problem worth investigating. This helps catch issues before they become major problems.
The developer also highlights several infrastructure issues they faced, including:
- MySQL configuration was not loaded correctly, leading to poor performance and incorrect port settings. Always verify where configuration values come from and ensure all settings are properly applied.
- Backup scripts were silently failing because the log directory lacked write permissions, leaving backups unrecoverable. Always verify that backup processes are working as expected and that logs are being properly stored and examined.
- Encryption keys must be securely stored, preferably in a password manager. Backups are only useful if they can be restored when needed.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
