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merkle-tree
December 20, 2024 / Last updated : December 21, 2024 admin Python Code

Understanding Merkle Trees in Python: A Step-by-Step Guide

In cryptography and computer science, a hash tree or Merkle tree is a tree in which every “leaf” node is labelled with the cryptographic hash of a data block, and every node that is not a leaf (called a branch, inner node, or inode) is labelled with the cryptographic hash of the labels of its […]

A UTXO represents an output of a transaction that has not yet been spent
December 16, 2024 / Last updated : December 16, 2024 admin Bitcoin Programming

UTXO References in Transactions with Rust

Understanding UTXO References in Transactions with Rust: A Practical Guide In blockchain and cryptocurrency systems, UTXO (Unspent Transaction Output) is a critical concept. Transactions consume UTXOs from previous transactions and create new ones for future use. This tutorial will guide you through using Rust to search for transactions referencing specific UTXOs using efficient data structures […]

Alice and Bob
September 23, 2024 / Last updated : September 23, 2024 admin Bitcoin Programming

HTLC – Atomic Swaps

Hash Time-Locked Contracts (HTLCs) are used in atomic swaps, allowing parties to exchange assets across different blockchains without trusting each other directly. Understanding HTLC Atomic Swaps with Bob and Alice Hash Time-Locked Contracts (HTLCs) are smart contracts used in atomic swaps, enabling two parties—let’s call them Bob and Alice—to exchange assets across different blockchains without […]

March 1, 2024 / Last updated : March 4, 2024 admin Rust Programming

Proof of work

Proof of Work (PoW) is a consensus mechanism in blockchain technology. It requires participants, called miners, to solve complex mathematical puzzles to validate transactions and create new blocks. The first miner to solve the puzzle broadcasts the solution, and others verify it. PoW ensures security and decentralization.

Digital Signatures
November 28, 2023 / Last updated : December 7, 2023 admin Python Code

Streamlit App – Digital Signature demo

I demo ECDSA public/private keys with digital signatures using Streamlit… The private key gets generated, and stays private. The public key is given to the person who want’s to verify the message. Using the public key plus the signed message they can be sure that the only the owner of the matching private key signed […]

bitcoin Script
November 28, 2023 / Last updated : November 29, 2023 admin Bitcoin Programming

Bitcoin Scripts and Script Language

Bitcoin Script is a powerful and unique scripting language at the heart of the Bitcoin blockchain, defining the rules governing transaction execution. Designed by Satoshi Nakamoto, it enables users to create complex, programmable transactions, unlocking a realm of possibilities beyond simple peer-to-peer transfers. Let’s look at the basics of how it works… Successful Basic Script […]

bitcoin script
November 26, 2023 / Last updated : November 26, 2023 admin Bitcoin Programming

Learning Bitcoin Script/Miniscript and where to apply in a transaction

Partially Signed Bitcoin Transactions (PSBTs) are a standardized way of representing a Bitcoin transaction and its signatures, allowing different parties to collaborate in creating a transaction without sharing private keys. PSBTs are often used in multi-signature setups or with hardware wallets. In this article we’ll discover more about how Bitcoin Script can be created with […]

bitcoin Script
November 25, 2023 / Last updated : November 25, 2023 admin Bitcoin Programming

Explaining Bitcoin’s “Taproot”

Taproot” is an upgrade to the Bitcoin network that aims to enhance privacy, improve scripting flexibility, and optimize the use of resources. Let me break it down into simpler terms: In summary, Taproot is like an upgrade for Bitcoin that makes transactions more private, scripting more flexible, and resource usage more efficient. It’s a step […]

November 21, 2023 / Last updated : November 21, 2023 admin Bitcoin Programming

BDK Wallet Descriptors

If you like Bitcoin and coding in Rust then you will likely want to try out BDK.

BDK introduces you to “Wallet Descriptors”

bitcoin script
November 21, 2023 / Last updated : November 22, 2023 admin Bitcoin Programming

Learn BDK – Bitcoin Dev Kit

Here we continue trying out BDK and learning to use it with Rust : By the end of this article our code will do the following : During testing I had this “Dust” error, so let’s just cover that first… BDK – Error: OutputBelowDustLimit(0) When testing on Testnet you may come across errors with the […]

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