Email us directly
The fastest way to reach the ZeroToBlock team is by email at hello@zerotoblock.com. To help us route your message, please use one of the prefixes below in your subject line.
What can we help with?
Support & bug reports
Something broken in a course, simulation, or your account? Email us with subject prefix [Support]. Include the page URL, your browser, and a short description of what you expected versus what happened.
Course feedback & suggestions
We're actively expanding the curriculum. If there's a Bitcoin, blockchain or Web3 topic you wish we covered — Ethereum, Solidity, zero-knowledge proofs, Layer 2s, MEV, anything — write to us with subject prefix [Curriculum].
Partnerships
Universities, bootcamps, exchanges and protocol teams: we're open to co-creating content, embedding our simulators, or running joint programs. Use subject prefix [Partnership] and tell us about your audience and goals.
Press & media
Journalists and researchers can reach us with subject prefix [Press]. Logos, screenshots and quotes are available on request.
Security disclosures
Found a security issue? Please email us privately with subject prefix [Security] before publishing. We acknowledge responsible disclosures within 72 hours.
Response time
We're a small team. We aim to respond to:
- Security disclosures: within 72 hours
- Support requests: within 3–5 working days
- Partnership and press: within 1 week
- Course suggestions: we read all, may not reply individually
Faster than email
Many common questions are already answered in our FAQ. To get started learning right away, jump into Bitcoin 101 or the Proof of Work course. Browse the blockchain glossary for term definitions and the developer blog for in-depth articles.