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Introduction to OP_NET

What is Bitcoin?
Key Concepts and Terminology
What is OP_NET?
How OP_NET Extends Bitcoin
Detailed Architecture
Bitcoin Smart Contracts Explained

Quick Start Guide

Installing the Libraries
Setting Up TypeScript
Configuring Your Environment
Your First Contract Interaction
Browser vs Node.js Usage

Core Concepts

Understanding the Protocol Design
Transaction Types Explained
How Gas Works on Bitcoin
Fee Calculation Methods
Consensus and Block Production
OP_NET vs Metaprotocols

FAQ

Technical FAQ

Fundamentals

Bitcoin vs Ethereum Address Philosophy
How Private Keys Generate All Addresses
Bitcoin Addresses
Quantum Support
Package Requirements
Mnemonic
Wallet Management
Address Class
Address Verification
Message signing

Legacy Addresses (P2PKH)

Introduction
Transaction Structure
Using P2PKH

Script Hash Addresses (P2SH)

Introduction
Transaction Structure
Using P2SH

Native SegWit (P2WPKH)

Introduction
Transaction Structure
Using P2WPKH

Witness Script Hash (P2WSH)

Introduction
Transaction Structure
Using P2WSH

Taproot Addresses (P2TR)

Introduction
Merklized Alternative Script Trees
Transaction Structure
Using P2TR

OP_NET Contract Addresses (P2OP)

Introduction
Using P2OP

Witness Data Authentication (P2WDA)(Experimental)

Introduction
Technical Architecture
Economics
Operational Capabilities
Advanced Considerations

Audit Reports

Verichain Reports

Using the OP_NET Client Library

Installing the Library
Architecture

Understanding Providers

What Providers Do
Choosing the Right Provider
Choosing a Network

JSON-RPC Provider

Setting Up HTTP Connections
Choosing a Network
Handling Request Batching
Configuring JSON RPC
Caching JSON Provider

Smart Contract Interactions

Import ABI and Contract Types
Instantiating a Contract
Simulating a Call
Simulating Transaction

Working with Bitcoin

Get Address Balance
Get Multiple Balances
Fetch UTXOs for an Address
Optimize UTXO Selection
Sending Bitcoin
Batch payment (splitting UTXOs)
UTXO Consolidation

Working with Blocks

Get the Current Block Height
Fetch a Block
Fetch Multiple Blocks at Once

Working with Transactions

Fetch a Transaction
Get Transaction Receipts
Broadcasting Transactions

Working with Public Keys

Get Unified Addresses
Fetch Multiple Keys

Setting Up Your Environment

React (Vite)

Basic examples

About Wallet

Introduction
Supported Wallet
Provider Injection

Using WalletConnect

Introduction
Installation
Wallet Detection
Managing Session
WalletConnect Context
Using walletInstance
Event Management
Connecting
Disconnecting
Getting Balances
Getting Wallets Information
Getting Network Information
Switching Networks
Switching Accounts
Signing and Sending Transactions
Signing Messages

OP_WALLET Guide

Setting Up OP_WALLET
Usage

Implementing new Wallet

Introduction
Auto Detection
Connecting and Disconnecting
Utility Functions
Wallet Hooks
Last Steps
Full Example

Hardware Wallet Support

Integration Points
Security Best Practices

Documentation

Github Documentation

Getting Started Examples

GitHub Examples

OP-20 Tokens

Introduction
Token Metadata
Creating Tokens
Allowance
Allowance by Signatures
Transfer Operations
OP-20 Implementation
OP-20 Standard

OP_721 NFTs

Minting NFTs
Transfer Methods
Approval Management
Token URIs
Collection Metadata
Reservation System

Understanding Epochs

About Epochs
Mining Process

Challenge System

Getting Challenges
Calculating Solutions
Verifying Solutions
Difficulty Adjustment

Submitting Solutions

Preparing Submissions
Signature Requirements
Validation Process
Reward System

Setting Up a Node

Installation Guide
Configuration

Audit Reports

Verichain Reports

Understanding ABIs

GitHub Documentation

Binary Operations

Reading Binary Data
Writing Binary Data
Buffer Management
Endianness Handling

Type Encoding

Encoding Primitives
Encoding Arrays
Encoding Structures
Custom Types

Address Operations

Address Maps
Address Sets
Deterministic Collections
Iterator Support

Documentation

Getting Started

Introduction to OP_NET

What is Bitcoin?
Key Concepts and Terminology
What is OP_NET?
How OP_NET Extends Bitcoin
Detailed Architecture
Bitcoin Smart Contracts Explained

Quick Start Guide

Installing the Libraries
Setting Up TypeScript
Configuring Your Environment
Your First Contract Interaction
Browser vs Node.js Usage

Core Concepts

Understanding the Protocol Design
Transaction Types Explained
How Gas Works on Bitcoin
Fee Calculation Methods
Consensus and Block Production
OP_NET vs Metaprotocols

FAQ

Technical FAQ

Addresses, Wallets and Messages Signing

Fundamentals

Bitcoin vs Ethereum Address Philosophy
How Private Keys Generate All Addresses
Bitcoin Addresses
Quantum Support
Package Requirements
Mnemonic
Wallet Management
Address Class
Address Verification
Message signing

Legacy Addresses (P2PKH)

Introduction
Transaction Structure
Using P2PKH

Script Hash Addresses (P2SH)

Introduction
Transaction Structure
Using P2SH

Native SegWit (P2WPKH)

Introduction
Transaction Structure
Using P2WPKH

Witness Script Hash (P2WSH)

Introduction
Transaction Structure
Using P2WSH

Taproot Addresses (P2TR)

Introduction
Merklized Alternative Script Trees
Transaction Structure
Using P2TR

OP_NET Contract Addresses (P2OP)

Introduction
Using P2OP

Witness Data Authentication (P2WDA)(Experimental)

Introduction
Technical Architecture
Economics
Operational Capabilities
Advanced Considerations

OP_NET Client Library

Audit Reports

Verichain Reports

Using the OP_NET Client Library

Installing the Library
Architecture

Understanding Providers

What Providers Do
Choosing the Right Provider
Choosing a Network

JSON-RPC Provider

Setting Up HTTP Connections
Choosing a Network
Handling Request Batching
Configuring JSON RPC
Caching JSON Provider

Smart Contract Interactions

Import ABI and Contract Types
Instantiating a Contract
Simulating a Call
Simulating Transaction

Working with Bitcoin

Get Address Balance
Get Multiple Balances
Fetch UTXOs for an Address
Optimize UTXO Selection
Sending Bitcoin
Batch payment (splitting UTXOs)
UTXO Consolidation

Working with Blocks

Get the Current Block Height
Fetch a Block
Fetch Multiple Blocks at Once

Working with Transactions

Fetch a Transaction
Get Transaction Receipts
Broadcasting Transactions

Working with Public Keys

Get Unified Addresses
Fetch Multiple Keys

Frontend Integration

Setting Up Your Environment

React (Vite)

Basic examples

Wallet Integration

About Wallet

Introduction
Supported Wallet
Provider Injection

Using WalletConnect

Introduction
Installation
Wallet Detection
Managing Session
WalletConnect Context
Using walletInstance
Event Management
Connecting
Disconnecting
Getting Balances
Getting Wallets Information
Getting Network Information
Switching Networks
Switching Accounts
Signing and Sending Transactions
Signing Messages

OP_WALLET Guide

Setting Up OP_WALLET
Usage

Implementing new Wallet

Introduction
Auto Detection
Connecting and Disconnecting
Utility Functions
Wallet Hooks
Last Steps
Full Example

Hardware Wallet Support

Integration Points
Security Best Practices

Writing smart contracts

Documentation

Github Documentation

Examples and Tutorials

Getting Started Examples

GitHub Examples

Token Standards

OP-20 Tokens

Introduction
Token Metadata
Creating Tokens
Allowance
Allowance by Signatures
Transfer Operations
OP-20 Implementation
OP-20 Standard

OP_721 NFTs

Minting NFTs
Transfer Methods
Approval Management
Token URIs
Collection Metadata
Reservation System

Epochs and Mining

Understanding Epochs

About Epochs
Mining Process

Challenge System

Getting Challenges
Calculating Solutions
Verifying Solutions
Difficulty Adjustment

Submitting Solutions

Preparing Submissions
Signature Requirements
Validation Process
Reward System

OP_NET Node

Setting Up a Node

Installation Guide
Configuration

Audit Reports

Verichain Reports

ABI System

Understanding ABIs

GitHub Documentation

Data Encoding

Binary Operations

Reading Binary Data
Writing Binary Data
Buffer Management
Endianness Handling

Type Encoding

Encoding Primitives
Encoding Arrays
Encoding Structures
Custom Types

Address Operations

Address Maps
Address Sets
Deterministic Collections
Iterator Support

Verichain Reports

Overview

Verichain conducted a comprehensive security audit of the OP_NET client library code. The complete audit reports are available in the project's GitHub repository.

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