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at January 25, 2023 0

Blockchain developer roadmap

1. Who this guide is for

This roadmap is for you if:

  • You’ve heard about blockchain and Web3 and want to turn it into a career

  • You already code (or are willing to learn) and want a clear step-by-step plan

  • You’re confused by 1000 different tutorials and want one structured path

2. Big picture: what a blockchain developer actually does

A blockchain developer usually:

  • Designs and writes smart contracts

  • Builds dApps (front-end + smart contract + backend)

  • Integrates wallets and payments into apps

  • Understands security, gas costs, and consensus

  • Works with teams on real products: DeFi, NFTs, infrastructure, games, etc.

You don’t need to know everything on day one, but you do need a solid foundation.

3. Step 1 – Learn the fundamentals of blockchain

Before touching code, understand why blockchain exists.

Key concepts to learn:

  • What a block and a chain are

  • How transactions, addresses, and wallets work

  • Difference between centralized vs decentralized systems

  • Public vs private vs consortium blockchains

  • Basic ideas: immutability, transparency, trustless, peer-to-peer

Resources to use:

  • Beginner-friendly YouTube playlists

  • Intro blog posts and ebooks

  • Visual explainers (diagrams help a lot)

Goal: You should be able to explain blockchain to a friend in simple language.

4. Step 2 – Get your programming basics in place

You can’t escape coding. Choose one main language and get comfortable.

Good options:

  • JavaScript / TypeScript – perfect if you also want to build web frontends

  • Python – great for scripts, tools, and learning programming

  • Later you can explore Rust, Go, C++ if you go deeper into infrastructure.

Focus on:

  • Variables, loops, functions

  • Data structures (arrays, maps, structs)

  • Basic algorithms and problem solving

  • Git & GitHub basics (clone, commit, push, pull request)

If you’re already comfortable with coding, you can move faster through this step.

5. Step 3 – Explore major blockchain platforms

Don’t try to learn 10 blockchains at once. Start with the main ones:

  • Bitcoin

    • First real blockchain

    • Focus on payments and simple transactions

  • Ethereum

    • General-purpose smart-contract platform

    • Most popular for dApps, DeFi, NFTs

  • Hyperledger / permissioned chains

    • Used by enterprises

    • Focus on private networks and business use cases

At this stage, just understand:

  • What problems each platform tries to solve

  • High-level architecture and use cases

  • Which platform you want to specialize in first (for most people: Ethereum)

6. Step 4 – Learn smart contract development

Now we go deeper: smart contracts.

For Ethereum, your main language is Solidity.

Start with:

  • Setting up Remix IDE in your browser

  • Writing tiny contracts:

    • A simple storage contract (save and read a number)

    • A counter (increment / decrement)

Then move to more real examples:

  • ERC-20 token (fungible token)

  • ERC-721 NFT (non-fungible token)

  • A simple crowdfunding or voting contract

Concepts you must understand:

  • State variables, functions, events, modifiers

  • Mappings and arrays

  • require, revert, and assert

  • Gas and gas optimization basics

Aim to build at least 3–5 small contracts before calling yourself “Solidity developer”.

7. Step 5 – Master development tools & frameworks

Good developers are good with their tools.

Important tools in the Ethereum ecosystem:

  • Frameworks

    • Hardhat or Foundry (modern choices)

    • Truffle (older but still used)

  • Local networks

    • Hardhat node / Anvil

    • Ganache (legacy but simple)

  • Wallets

    • MetaMask

    • WalletConnect (for mobile wallets)

  • Libraries

    • Ethers.js (highly recommended)

    • Web3.js (legacy but still around)

What you should practice:

  • Compile & deploy contracts from Hardhat/Foundry

  • Write automated tests (unit tests) for your smart contracts

  • Use scripts to interact with contracts (read/write data, send transactions)

  • Connect a front-end (Next.js/React) to your contracts using Ethers.js

8. Step 6 – Learn blockchain security fundamentals

Security is not optional in Web3. A tiny bug can cost millions.

Topics to learn:

  • Common vulnerabilities:

    • Re-entrancy

    • Integer overflow/underflow (less common with Solidity ≥0.8)

    • Front-running / MEV issues

    • Broken access control

    • Insecure randomness

  • Secure patterns:

    • Checks-Effects-Interactions pattern

    • Use of OpenZeppelin libraries

    • Pausable, Ownable, upgradeable contracts

  • Tools:

    • Static analysis (Slither, Mythril etc.)

    • Test coverage and fuzzing (Foundry)

Read post-mortems of famous hacks to see how small mistakes become huge losses.

9. Step 7 – Understand consensus mechanisms

You don’t have to be a researcher, but you must know the basics.

Learn about:

  • Proof of Work (PoW) – used by Bitcoin (older Ethereum)

  • Proof of Stake (PoS) – used by modern Ethereum and many L1s

  • Delegated Proof of Stake (DPoS) and similar variants

  • Trade-offs:

    • Security vs energy usage

    • Centralization risks

    • Finality and speed

Having this mental model helps you evaluate new chains instead of blindly believing marketing.

10. Step 8 – Learn dApp development (full-stack Web3)

Now it’s time to connect everything.

You will:

  • Build the front-end with Next.js / React

  • Use Ethers.js to talk to contracts

  • Let the user:

    • Connect their wallet

    • Read on-chain data (balances, metadata)

    • Send transactions (mint NFTs, stake tokens, etc.)

Sample dApp ideas:

  • Token dashboard with transfer + allowance screen

  • NFT minting website for a small collection

  • Simple staking or yield dApp (very basic logic)

Your goal: at least 2–3 complete dApps deployed on a testnet or mainnet.

11. Step 9 – Join the blockchain developer community

You grow faster when you don’t learn alone.

Ways to plug into the community:

  • Join Discord/Telegram groups for:

    • Frameworks (Hardhat, Foundry)

    • Protocols (Uniswap, Aave, etc.)

  • Follow core devs and educators on X (Twitter), YouTube, blogs

  • Attend local meetups or online events

  • Ask and answer questions on Stack Overflow and forums

Networking isn’t just for jobs; it helps you learn the right things at the right time.

12. Step 10 – Hackathons, open source, and real experience

To become hireable, you need proof:

  • Participate in hackathons (ETHGlobal, local events, online challenges)

    • Build a small project in a weekend

    • Pitch it, get feedback, maybe win prizes

  • Contribute to open-source:

    • Fix bugs or improve docs for libraries you use

    • Add small features

    • Make consistent pull requests to 1–2 repos

These activities:

  • Build your portfolio

  • Put your name on real projects

  • Help you learn how teams work in practice

13. Step 11 – Consider certifications & structured programs

Certifications are optional, but can help:

  • To prove to recruiters that you’ve completed structured learning

  • To organize your own study path

Possible options:

  • University or institute programs (like PIAIC, university Web3 tracks)

  • Reputable online courses and specializations

  • Vendor or platform certificates (where meaningful)

Remember: certificates support your skills; they don’t replace projects + GitHub.

14. Step 12 – Build your personal brand

To stand out:

  • Create a GitHub profile with:

    • Contracts, dApps, tools

    • Clean README files and screenshots

  • Maintain a portfolio website:

    • Highlights your best Web3 projects

    • Shows links to demos and repos

  • Write blog posts (like this one) explaining:

    • Concepts you learned

    • Problems you solved

    • Security lessons from hacks

A strong online presence makes it easier for employers and clients to trust you.

15. Suggested learning order (checkpoint roadmap)

You can follow this simple order:

  1. Blockchain basics + programming basics

  2. Choose Ethereum + start Solidity

  3. Learn tools (Hardhat/Foundry, Ganache, MetaMask, Ethers.js)

  4. Build small smart contracts → then small dApps

  5. Study security & consensus

  6. Join communities, hackathons, open source

  7. Add certifications / structured courses if you like

  8. Polish portfolio, GitHub, LinkedIn and start applying

With consistent effort, you can move from beginner to job-ready blockchain developer in 6–18 months, depending on your starting point and available time.

Read more »

at April 07, 2020 23
The First Application Of BlockChain Is:-
Bitcoin
The first application of BlockChain is Bitcoin. Bitcoin is a cryptocurrency. It is a decentralized digital currency without a central bank and a single administrator that can be sent or receive from user to user on the peer to peer bitcoin network without any intermediaries. Satoshi Nakamoto.
It can be sold, purchased for other currencies at specialized currencies exchanges. They are completely virtual with no physical existence. It is secure fast and borderless. In transactions, our transaction is secure and fast. The coin is implied in transaction that transfer value. Each bitcoin is basically a computer file that is stored in a 'digital wallet' app on a smartphone or computer. Bitcoin is invented in 2009 by an unknown person or group of people using the name
Ten most bitcoin holder countries are:
  • The united state,
  • The Czech Republic,
  • China,
  • Spain,
  • Romania,
  • Poland,
  • Japan,
  • Turkey,
  • South Korea,
  • Switzerland.
Read more »

at April 05, 2020 29


Lesson no 1

What is BlockChain?  
Blockchain is a shared immutable ledger or just a ''unchangeable record of who owns what".

In its simplest form blockchain is a decentralized distributed database, an unchangeable record or ledger or assets ownership.

Global and peer to peer and distributed immutable record of the transaction.
The ledger is often used to track and manage assets ownership, however, blockchain can be a simple record-keeping device for any and all kinds of data, whether that data is related to any assets owned or not.
Although blockchain is often described as a new and cutting-edge technology, the truth is blockchain is nothing more than a creative amalgamation of many old concepts, technologies and methodologies. These concepts include ledgers, cryptography, group consensus immutability and more.

Read more »

at April 05, 2020 114
Python is vastly used language. It is best programming language for Artificial Language and Data Sciences. Now Python is leading all programming language by ranking at second most popular language. In this course we will start from scratch and go to expert level of learning. First of all we discuss about how to install and run python on our system.

How to Run First program?

  • Download anaconda Python 3.7 and Install it (available for windows, Linux, mac OS).
  • After installation go to anaconda and open jupyter notebook (image below).
  • Now click on New at right top side and then click on python 3 from drop down menu (Images below)
  • Now you will be redirected to new Jupyter page. Here we write our first program in Python.
  • Your first program may be Written on Print function.
print("Hello World")
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