Blockchain development roadmap:
Types of blockchain development:
1. Application devs - solidity, javascript, python
2. Core devs - golang, c++, rust
What will you do?
- smart contracts on ethereum BC using solidity
- understanding c++ through blockchain development
Tools & tech:
1. javascript - react, node, express, web3
2. Truffle[framework]
3. Ganache - for hosting and deploying applications [test transactions]
4. Metamask
What more is required? [Tutorials -> projects -> work]
- Web development
- Crypto graphy
Since blockchain systems require efficient memory handling and low-level manipulation, C and C++ are ideal for learning these concepts.
-
Pointers
- Basics: Pointer declaration, dereferencing, pointer arithmetic
- Dynamic memory allocation (
malloc
,calloc
,free
,new
,delete
) - Pointer to pointer (
**ptr
) and pointer to structures hi
-
Linked Lists
- Singly Linked List (Insertion, Deletion, Traversal)
- Doubly Linked List (Forward and Backward Traversal)
- Circular Linked List
- Hash-linked structures (used in blockchain)
Once you're comfortable with pointers and linked lists, build a simple blockchain prototype where each block is a node in a linked list.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct Block {
int index;
char data[256]; // Transaction data
struct Block* prev; // Pointer to the previous block
} Block;
// Function to create a new block
Block* createBlock(int index, const char* data, Block* prevBlock) {
Block* newBlock = (Block*)malloc(sizeof(Block));
newBlock->index = index;
strcpy(newBlock->data, data);
newBlock->prev = prevBlock; // Linking to previous block
return newBlock;
}
// Function to print the blockchain
void printBlockchain(Block* block) {
while (block) {
printf("Block %d: %s\n", block->index, block->data);
block = block->prev; // Traversing the blockchain
}
}
int main() {
Block* genesis = createBlock(0, "Genesis Block", NULL);
Block* block1 = createBlock(1, "Transaction 1", genesis);
Block* block2 = createBlock(2, "Transaction 2", block1);
printBlockchain(block2);
// Free allocated memory
free(block2);
free(block1);
free(genesis);
return 0;
}
✅ Key Takeaways:
prev
pointer links the current block to the previous one (like a linked list).- Memory is allocated dynamically (
malloc
andfree
).
Once you're comfortable with C/C++, you can explore Go, Rust, and Solidity, which are widely used in blockchain.
Language | Use Case |
---|---|
C++ | Used in Bitcoin Core, fundamental for blockchain logic |
Go | Used in Hyperledger Fabric, easy concurrency & networking |
Rust | Used in Solana, Polkadot, secure memory management |
Solidity | Used in Ethereum Smart Contracts, works with EVM |
Python | For rapid prototyping and blockchain scripting (e.g., Web3.py) |
🔹 Recommended Choice:
- Start with C++ (for low-level blockchain concepts)
- Learn Go (for modern blockchain systems)
- Rust (for security-focused chains like Solana)
- Move to Solidity (for smart contract development)
📚 Books & Online Courses
-
Pointers & Linked Lists
- "The C Programming Language" – Brian Kernighan & Dennis Ritchie
- "Data Structures and Algorithm Analysis in C" – Mark Allen Weiss
- "Understanding Pointers in C" – Yashavant Kanetkar
-
Blockchain Basics
-
Hands-on Blockchain Development
- Bitcoin: Read Bitcoin Core source code (written in C++) GitHub
- Ethereum: Learn Solidity & Ethereum Virtual Machine (EVM)
- Hyperledger Fabric (Go-based blockchain) Hyperledger Fabric Docs
✅ Mini Projects to Try
- Basic Blockchain in C++ (With SHA-256 hashing)
- Build a Linked List-based Blockchain in Go
- Write a Smart Contract in Solidity
- Implement a Proof-of-Work System in Rust