A shared vocabulary
Work through concepts that your colleagues need to understand. Topics can include Bitcoin, blockchain architecture and digital protocol rules.
Possible output: a learning outline and explanatory notes.
Education topics ↗Ceprefi / Education & project advisory
Practical guides and advisory conversations for founders, small teams and larger organisations.
Learn how blockchain systems work, plan a digital protocol or make your product easier to explain. Start with a guide, or bring a project question to Ofelia.
Choose a starting point
01Bitcoin, blockchains and the rules behind a network.
Participants, permissions and what happens when a step fails.
The user, the problem and the first piece of work.
The work / Three ways to begin
Each enquiry starts with your question. We agree what is useful, what is included and any fees before commissioned work begins.
Work through concepts that your colleagues need to understand. Topics can include Bitcoin, blockchain architecture and digital protocol rules.
Possible output: a learning outline and explanatory notes.
Education topics ↗Describe the participants, permissions and system boundaries. Identify assumptions before they become part of the implementation.
Possible output: a scoped protocol brief and open questions.
Planning support ↗Clarify who the product serves, organise the first steps and work through product communication or marketing questions.
Possible output: a project outline or messaging review.
Company support ↗
Learning in practice
A short explanation reveals what a team understands and where it needs more work. Our guides give you a place to start that conversation.
Explore leading technology through its mechanics: how Bitcoin records activity, how protocols define rules and how software teams describe their systems.
Open the Onchain Dictionary ↗Discuss your project
Tell us about the protocol, IT company or product you are working on. We can discuss education, planning or marketing support and whether the project fits the service.
Articles / Read and use

Ceprefi notes
Why this site puts shared understanding before a longer feature list.
Read article
Practical guide
A short project brief gives a team something useful to disagree with.
Read article
Protocol guide
Start with the rules, the people who use them and what happens when something fails.
Read articleContact / Tallinn, Estonia
Contact Ofelia to discuss a company or team project. You can also prepare a short brief here to keep the details together before calling.
Ofelia HartmannPersonal correspondence address. Arrange meetings in advance.