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Top Solidity Stories

Learn Solidity. Shark of The Pool — Part 1

Learn Solidity. Shark of The Pool — Part 1

In this series we will create a simple Dapp, based on Ethereum blockchain using Solidity smart contracts. In the later parts we will see…
Go to the profile of Joze Kosmerl
Joze Kosmerl
Jumping into Solidity —The ERC721 Standard (Part 1)

Jumping into Solidity —The ERC721 Standard (Part 1)

A few months ago I decided to learn Solidity, the programming language used for writing smart contracts for the Ethereum blockchain.
Go to the profile of Andrew Parker
Andrew Parker
Linked Lists in Solidity

Linked Lists in Solidity

We need an efficient structure to store a large number of entries in a smart contract that we can quickly traverse. It must also be very…
Go to the profile of Austin Thomas Griffith
Austin Thomas Griffith
Testing Solidity with Truffle and Async/Await

Testing Solidity with Truffle and Async/Await

If you were to ask a programmer/developer what the worst part of the job is, I think most would say writing tests. You have to create mock…
Go to the profile of Angello Pozo
Angello Pozo
Storage vs Memory in Solidity

Storage vs Memory in Solidity

A simple example to make you think
Go to the profile of Dave Appleton
Dave Appleton
Solidity Development: Creating our first smart contract

Solidity Development: Creating our first smart contract

Developing smart contract for crypto game
Go to the profile of Nikita Fedosenko
Nikita Fedosenko
Return values in solidity contracts

Return values in solidity contracts

If the only other option is to revert, no point returning a bool
Go to the profile of Dave Appleton
Dave Appleton
Solidity Development: Setting up environment

Solidity Development: Setting up environment

Setting up working environment for smart contract development
Go to the profile of Nikita Fedosenko
Nikita Fedosenko
Write A Simple Contract On Top Of Ethereum

Write A Simple Contract On Top Of Ethereum

In this article, I am going to show you how to create a smart contract on top of Ethereum. Smart contract is a program on top of Ethereum…
Go to the profile of arjuna sky kok
arjuna sky kok
Solidity
Ethereum Public Registry: Stablecoins

Ethereum Public Registry: Stablecoins

Implementation of an Ethereum smart contract for simple and streamlined access to ERC20-Stablecoins (for developers).
Go to the profile of John Quarnstrom
John Quarnstrom
Solidity and Prime Numbers

Solidity and Prime Numbers

A thought experiment in reducing parameters passed through the constructor of an Ethereum smart contract.
Go to the profile of John Quarnstrom
John Quarnstrom
Ethereum IOT Kid Grounding Device II: Smart Contract

Ethereum IOT Kid Grounding Device II: Smart Contract

This is part 2 of my Ethereum IOT Kid Grounding Device project. In this part, we will discuss the business logic behind Grounder.sol, the…
Go to the profile of Jackson Ng
Jackson Ng
Ethereum IOT Kid Grounding Device I:How it works

Ethereum IOT Kid Grounding Device I:How it works

Internet of Trusted Things (IOTT) is a recently-coined term that explores the integration of Internet of Things (IOT) with Blockchain. To…
Go to the profile of Jackson Ng
Jackson Ng
The ERC-223 Evolution

The ERC-223 Evolution

Disclaimer: I use the term ERC-223 very lightly. There is no consensus from the community as to whether the EIP will ever see the light of…
Go to the profile of CipherZ
CipherZ
Updatable Smart Contracts: Eliminating Need for Trust

Updatable Smart Contracts: Eliminating Need for Trust

One key struggle, many developers have with smart contracts is: Once they are deployed, they are there! Altering a contract after deploying…
Go to the profile of Lucas Aschenbach
Lucas Aschenbach
Introduction to Solidity Programming and Smart Contracts (For Complete Beginners)

Introduction to Solidity Programming and Smart Contracts (For Compl...

Okay wait, slow down… What exactly is solidity and what makes these contracts so “smart”?
Go to the profile of Etienne Dusseault
Etienne Dusseault
Step by Step Approach to create DAPP — using Ethereum, ReactJS & IPFS — Part 2

Step by Step Approach to create DAPP — using Ethereum, ReactJS & IP...

Sorry for the delay!!, have been busy with product setup in production… Here we go, my next chapter.
Go to the profile of Logeswaran Audhikesavan
Logeswaran Audhikesavan
How to develop Ethereum contract using Python Flask?

How to develop Ethereum contract using Python Flask?

Storing data in a database is an integral part of any software application.Whoever has the control of that database is a master of that…
Go to the profile of Neha Ghogale
Neha Ghogale
Customizing and Using Multisig Contracts For Contract Executions

Customizing and Using Multisig Contracts For Contract Executions

Cryptocurrencies are thought to be the safest way to store assets. But most of usage are designed for single addresses that secured by…
Go to the profile of Emre Ceylan
Emre Ceylan
Build a smart contract that transfers ERC20 token from your wallet to other ERC20 compliant wallet…

Build a smart contract that transfers ERC20 token from your wallet ...

Overview
Go to the profile of Alofe Oluwafemi
Alofe Oluwafemi
The Curious Case of _; in Solidity

The Curious Case of _; in Solidity

Solidity as a programming language has been most intriguing for me because of its many features that I haven’t come across in languages…
Go to the profile of Jackson Ng
Jackson Ng
RSK: Bitcoin smart contracts (EN)

RSK: Bitcoin smart contracts (EN)

Bitcoin allows smart contracts. Some cases of smart contracts are multisig wallet and HTLC (both used by Lightning Network). The Bitcoin’s…
Go to the profile of Marcelo Morgado
Marcelo Morgado
Creating Smart Contracts with Smart Contract

Creating Smart Contracts with Smart Contract

This article explores the technique of getting one Smart Contract to call another Smart Contract and is a follow-up to the Escrow Service…
Go to the profile of Jackson Ng
Jackson Ng
Making sense of the Blockchain Landscape in 2018

Making sense of the Blockchain Landscape in 2018

BitCoin, Ethereum, Smart Contracts, Proof-of-Stake, Cardano, IOTA, ERC20 Tokens, Casper and Solidity.
Go to the profile of Prashant Ram
Prashant Ram
The Many Ways To Deploy Your Smart Contract To Rinkeby Network

The Many Ways To Deploy Your Smart Contract To Rinkeby Network

In order to understand this article, you need to understand how to create a smart contract, deploy it to test network and how to play with…
Go to the profile of arjuna sky kok
arjuna sky kok
Secure Asp.Net Core 2 API with Ethereum Blockchain

Secure Asp.Net Core 2 API with Ethereum Blockchain

The problem
Go to the profile of Michele Pisicoli
Michele Pisicoli
RPC Access to Ethereum with Infura

RPC Access to Ethereum with Infura

Syncing to the Ethereum Blockchain has always been a challenge particularly for me. I am based in Singapore and every few months, I run a 2…
Go to the profile of Jackson Ng
Jackson Ng
A guide to perform web queries in DAPP (Part 3)

A guide to perform web queries in DAPP (Part 3)

Part 1 & Part 2
Go to the profile of James
James
A guide to perform web queries in DAPP (Part 2)

A guide to perform web queries in DAPP (Part 2)

After understanding the mechanism of Oraclize in Part 1, we can dive into details of implementing a DAPP.
Go to the profile of James
James
A guide to perform web queries in DAPP (Part 1)

A guide to perform web queries in DAPP (Part 1)

Smart contract itself doesn’t provide web query functions.
Go to the profile of James
James
Vehicle Record and Service Maintenance on Blockchain using Ethereum, Solidity & Truffle..(Part 1)

Vehicle Record and Service Maintenance on Blockchain using Ethereum...

I moved to Dubai in 2015 from Bangalore after selling my car. Incidentally I started getting “Thank You” emails from the service center for…
Go to the profile of Pritam Dewan
Pritam Dewan
A (Practical) Walkthrough of Smart Contract Storage

A (Practical) Walkthrough of Smart Contract Storage

Before starting, there are two fantastic sources already on the subject that cover most basic use cases quite well:
Go to the profile of TovarishFin
TovarishFin
Lacking Insights in ERC223 & ERC827 Implementation

Lacking Insights in ERC223 & ERC827 Implementation

an Analysis of ATN Token's CUSTOM_CALL Bug
Go to the profile of SECBIT
SECBIT
What to Expect when your Smart Contract is Audited: The Auditor’s Story

What to Expect when your Smart Contract is Audited: The Auditor’s S...

As an auditor, I’m trying to make sure your contract is secure against EVM level attacks. Those are the kinds of attacks that leverage the…
Go to the profile of Aaron Lyn Anderson
Aaron Lyn Anderson
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