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Questions tagged [blockchain]

A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains a hash pointer as a link to a previous block, a timestamp and transaction data. By design, blockchains are inherently resistant to modification of the data. A blockchain can serve as an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.

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Blockchain implementation in F#: Wallet

Introduction This is Part 3 of my F# blockchain implementation. Previous parts: Block and Blockchain Transactions Code In this part I am implementing a wallet functionality. The code is based on a ...
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Blockchain implementation in F#: Transactions

Introduction This is Part 2 of my F# blockchain implementation. Previous parts: Block and Blockchain Code This time I am tackling transactions. The code is based on a JavaScript blockchain ...
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Blockchain implementation in F#: Block and Blockchain

Some time ago I started writing a blockchain implementation for learning purposes. I used this article as reference. Originally I wrote the code in C# but recently I have rewritten everything to F#. ...
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Solidity code for TimeBasedWill (smart contract)

Following is a TimeBasedWill I have written in Solidity to be built on the Ethereum Blockchain. I have tested the code using Remix IDE. I would like to get your comments and opinions about security ...
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Implementing blockchain block in C++11

I want to rewrite blockchain source code from Golang to C++11. Please, review my code and help me to improve it. Source in Golang: ...
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C++17. A blockchain implementation in 207 lines of code

There is a blockchain class with minimal functionality inspired by naivechain. It has template data and hash function parameters: ...
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Customizable Blockchain's block structure

I'm creating a new open-source blockchain framework for .NET Core and .NET Standard. But I have some questions about how to make block structure to be customizable and look beautiful. Let's begin ...
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Listens for custom messages on the production Bitcoin blockchain

The application listens for OP_RETURN messages on the Bitcoin blockchain and prints them to standard output. OP_RETURN is a custom transaction locking script that can store data, but nothing beyond ...