Build Cryptography and Blockchain from Scratch in Python — PickAClass
⏱ 2h 42m 📚 27 lessons 🎧 Audio version

Build Cryptography and Blockchain from Scratch in Python

Master the fundamentals of digital security by coding ciphers, RSA, and a mining-backed blockchain from scratch using pure Python.

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  • 🕐 Start anytime
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  • 🌐 In English
    Lessons, tasks and certificate — all fully in your language.

About this course

Demystify the math and mechanics behind secure communication and decentralized ledgers by building them yourself. You will transition from using security tools blindly to understanding their core mechanics, writing clean Python code to implement cryptographic algorithms and a functional blockchain from the ground up. What you'll learn: - Understand foundational terminology, symmetric encryption, and historical ciphers. - Implement asymmetric cryptography by writing the RSA algorithm from first principles. - Build a functional blockchain ledger with block validation and proof-of-work mining. - Apply modern Python type hints to ensure cryptographic code readability and structure. - Create secure hashing mechanisms to protect data integrity and prevent tampering. The course starts with basic concepts of encryption, guides you through implementing classic and modern mathematical algorithms, and culminates in constructing a complete blockchain system step-by-step. It is designed for beginner Python programmers interested in security and blockchain, with no prior cryptography experience required. Start reading today to unlock the inner workings of digital trust.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 14-day refund
    No questions asked
  • Short & focused
    2h 42m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
Skills profile · verifiable
Document
Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Build Cryptography and Blockchain from Scratch in Python
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
Build Cryptography and Blockchain from Scratch in Python
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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