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Blockchain

A decentralized, distributed, and oftentimes public, digital ledger consisting of records called blocks that are used to record transactions across many computers so that any involved block cannot be altered retroactively, without the alteration of all subsequent blocks.

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Implement a gasless Whitelist in your NFT Contract

Implement a gasless Whitelist in your NFT Contract

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5 min read
10N polkadot substrate : your first contract

10N polkadot substrate : your first contract

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6 min read
My Summer of Bitcoin 2022 Project - CI for CADR

My Summer of Bitcoin 2022 Project - CI for CADR

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9 min read
Creating a storage factory smart contract in Solidity and interacting with it (notes from Freecodecamp)

Creating a storage factory smart contract in Solidity and interacting with it (notes from Freecodecamp)

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8 min read
11B ethereum hardhat : Create task

11B ethereum hardhat : Create task

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9 min read
Building a Decentralized Twitter in 50 minutes using the Subsocial SDK

Building a Decentralized Twitter in 50 minutes using the Subsocial SDK

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2 min read
117 ethereum hardhat : Hardhat Runtime Environment (HRE)

117 ethereum hardhat : Hardhat Runtime Environment (HRE)

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4 min read
How to upload files to ardrive manually and with ardrive CLI?

How to upload files to ardrive manually and with ardrive CLI?

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7 min read
113 ethereum hardhat : Using TypeScript

113 ethereum hardhat : Using TypeScript

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4 min read
How to Get Testnet ETH and MATIC

How to Get Testnet ETH and MATIC

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1 min read
Cannot transfer ONG via JS-SDK

Cannot transfer ONG via JS-SDK

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1 min read
Introduction to Solana Blockchain

Introduction to Solana Blockchain

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3 min read
Deploy and Verify a Smart Contract to Testnet using Hardhat

Deploy and Verify a Smart Contract to Testnet using Hardhat

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4 min read
Ethernaut Challenge #4 Solution — Telephone

Ethernaut Challenge #4 Solution — Telephone

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4 min read
An Intro to the Ethereum Scaling: The Best Layer 2 Solutions

An Intro to the Ethereum Scaling: The Best Layer 2 Solutions

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10 min read
Ethernaut Challenge #2 Solution — Fallout

Ethernaut Challenge #2 Solution — Fallout

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3 min read
Day 30 - Polymorphism

Day 30 - Polymorphism

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2 min read
Dash Platform Sprint 85 Review – Summary

Dash Platform Sprint 85 Review – Summary

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2 min read
Web3 js in practical (Part-I)

Web3 js in practical (Part-I)

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2 min read
119 ethereum hardhat : Compilation artifacts

119 ethereum hardhat : Compilation artifacts

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3 min read
The Simplest Beginner's Guide to Cryptocurrencies.

The Simplest Beginner's Guide to Cryptocurrencies.

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6 min read
Day 29 - Assembly

Day 29 - Assembly

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2 min read
Run a Substrate Node Template on a Remote Server

Run a Substrate Node Template on a Remote Server

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1 min read
📃 Upgradable ERC-20 Smart Contract

📃 Upgradable ERC-20 Smart Contract

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9 min read
Day 28 - Abstract Contract and Interface

Day 28 - Abstract Contract and Interface

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3 min read
10Z ethereum hardhat : Deploying to network

10Z ethereum hardhat : Deploying to network

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3 min read
111 ethereum hardhat : use task and script

111 ethereum hardhat : use task and script

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3 min read
Day 27 - Libraries

Day 27 - Libraries

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3 min read
Kongz contract breakdown

Kongz contract breakdown

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6 min read
Day 26 - Events and Hashing

Day 26 - Events and Hashing

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2 min read
DATA STRUCTURES IN SOLIDITY

DATA STRUCTURES IN SOLIDITY

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3 min read
Substrate Pallet Code Analysis: Sudo

Substrate Pallet Code Analysis: Sudo

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4 min read
NFTs and Crypto tokens in clear terms

NFTs and Crypto tokens in clear terms

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5 min read
A quick intro to end-to-end testing Solana dApps

A quick intro to end-to-end testing Solana dApps

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4 min read
11L ethereum hardhat : Mining Modes

11L ethereum hardhat : Mining Modes

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3 min read
11J ethereum hardhat : Forking other networks

11J ethereum hardhat : Forking other networks

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4 min read
Meu primeiro smart contract: Criando um token ERC-20 pt.1

Meu primeiro smart contract: Criando um token ERC-20 pt.1

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7 min read
Introduction | Deploy an NFT project on the RSK Testnet

Introduction | Deploy an NFT project on the RSK Testnet

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13 min read
How Zenland Escrow Works [supports USDT, USDC, BUSD, DAI]

How Zenland Escrow Works [supports USDT, USDC, BUSD, DAI]

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5 min read
11H ethereum hardhat : Hardhat Network

11H ethereum hardhat : Hardhat Network

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5 min read
Dash Platform Sprint 86 Review – Summary

Dash Platform Sprint 86 Review – Summary

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Comments
1 min read
How hackers steal MetaMask seed? And how to protect it from their attack?

How hackers steal MetaMask seed? And how to protect it from their attack?

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1 min read
11D ethereum hardhat : Writing scripts

11D ethereum hardhat : Writing scripts

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3 min read
Can Smart Contracts Replace Traditional Escrow Services?

Can Smart Contracts Replace Traditional Escrow Services?

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8 min read
10R polkadot substrate : Use maps for storing values

10R polkadot substrate : Use maps for storing values

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5 min read
Smart contracts integration testing with hardhat mainnet fork

Smart contracts integration testing with hardhat mainnet fork

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4 min read
Top 3 Optimistic Rollup L2 projects

Top 3 Optimistic Rollup L2 projects

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3 min read
How to Build a Profitable NFT Marketplace with React, Solidity, and CometChat

How to Build a Profitable NFT Marketplace with React, Solidity, and CometChat

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14 min read
Zero Knowledge Proofs vs. Fraud Proofs

Zero Knowledge Proofs vs. Fraud Proofs

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3 min read
Meu primeiro smart contract: Criando um contrato de aposta

Meu primeiro smart contract: Criando um contrato de aposta

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9 min read
Using CCXT Implicit API methods

Using CCXT Implicit API methods

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3 min read
Como é feito uma blockchain ?

Como é feito uma blockchain ?

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5 min read
Working with WalletConnect from mobile Dapps (Part 1)

Working with WalletConnect from mobile Dapps (Part 1)

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5 min read
All you need to know about Consensus Mechanism.

All you need to know about Consensus Mechanism.

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4 min read
10X ethereum hardhat : Testing contracts

10X ethereum hardhat : Testing contracts

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8 min read
10V ethereum hardhat : create a project

10V ethereum hardhat : create a project

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3 min read
Token Standards: ERC-20 vs. ERC-721 vs. ERC-1155

Token Standards: ERC-20 vs. ERC-721 vs. ERC-1155

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4 min read
Are PoW & PoS actually a Blockchain Consensus?

Are PoW & PoS actually a Blockchain Consensus?

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2 min read
SOLIDITY - 101 (PART 1)

SOLIDITY - 101 (PART 1)

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3 min read
What is GameFi?

What is GameFi?

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6 min read
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