Bitcoin

Books

Community

Delving Bitcoin

Cryptography

Crypto Workbook - Cryptocamp 2025
How secure is 256 bit security?

Data

addrman-observer
- Repository - RPC-based Bitcoin Core IP address manager visulizatiion
Bitbo
Bitcoin Network Monitor - DSN Research Group
Bitcoin Optech Dashboards
Bitcoin Protocol Layer Statistics
Bitcoin Uptime
Bitnodes - Reachable Bitcoin Nodes
Bull Bitcoin Fee Multiple
The Case for Bitcoin
Clark Moody Dashboard
- v2
Fork Monitor
fork-observer
- Repository - Observe forks on all Bitcoin networks
HODL Waves - Bitcoin UTXO Age Distribution
inquisition.observer - every transaction made on the Bitcoin signet that spends a UTXO created using one of the deployed soft forks
mainnet-observer - Bitcoin Blockchain Statistics
mempool.observer
- Bitcoin Transaction Monitor
mempool clock
Mining Pool Observer - Transparency for Mining Pool Transaction Selection
peer-observer
- Repository
PricedInBitcoin21
Statoshi
TimechainStats
Timechain Calendar
Timechain Index
txstats

Charts

Bitcoin Monetary Inflation
Bitcoin network graphs
Bitcoin Stats and Data
Bitcoin Visuals
Clark Moody Ticker
Glassnode Studio
kibō - A better, FOSS, Bitcoin-only, self-hostable Glassnode
UTXO.live - current UTXO set
Wicked Smart Bitcoin - Bitcoin Visualizations Updated Hourly/Daily

Essays

Exchanges

Bisq - decentralized exchange
Boltz - Privacy first, account-free crypto exchange
Hodl Hodl - global P2P Bitcoin trading platform
P2P-Trading-Exchanges
Peach App
RoboSats - simple and private bitcoin exchange
SideSwap - Settlement infrastructure of the Liquid Network

Explorers

Bitfeed
Blockstream
Chaingraph
Explore Timechain - real-time 3D Bitcoin block visualization
Fast Bitcoin Block Explorer
Mempal - Bitcoin mempool monitoring and notification app for Android
mempool
OXT

Investing

Addressing Persisting Bitcoin Criticisms - Fidelity Digital Assets
Bitcoin First - Fidelity Digital Assets
Bitcoin First Revisited - Fidelity Digital Assets
Bitcoin Investment Thesis: An Aspirational Store of Value - Fidelity Digital Assets
Hoseki Verified - Bitcoin ETF Authentication

Layer 2

BitVM tapleaf-circuits - A proof-of-concept implementation of BitVM for bristol circuits
did:btc Method Specifiction - Microstrategy
Elements
Elements Project blockchain platform
ION
Liquid Network
Mercury Layer - Bitcoin Layer-2 scaling technology based on the concept of statechains. Blinded co-signing and key-cycling technology.
OpenTimestamps
Ordinals
Rootstock
Spark
Web5 - an extra decentralized web platform

Libraries

bitcoin-augur - Mempool-based bitcoin fee estimation library
bitcoinex - Bitcoin utilities in Elixir
BitcoinerLab - set of TypeScript modules that enable the creation of Bitcoin applications
bitcoinj - Java implementation of the Bitcoin protocol
bitcoinjs-lib - A javascript Bitcoin library for node.js and browsers
CoreBitcoin - Bitcoin toolkit for ObjC and Swift
descriptor-wallet - Library for building descriptor-based bitcoin wallets using rust-bitcoin
DLC Dev Kit - pplication tooling for dlc’s
embit - bitcoin library designed to run either with Python 3 on a PC or with MicroPython on embedded devices
GreenAddress C/C++ SDK - cross-platform, cross-language library for Blockstream Green wallets
libsecp256k1 - Optimized C library for EC operations on curve secp256k1
libwally-core - cross-platform, cross-language collection of useful primitives for cryptocurrency wallets
NBitcoin - Bitcoin library for the .NET framework
Payjoin Dev Kit - Scale Bitcoin, save fees, and preserve privacy with one tiny library
pycoin - Python-based Bitcoin and alt-coin utility library
python-bitcoinlib - Python3 library providing an easy interface to the Bitcoin data structures and protocol
Rust Bitcoin Library - Library with support for de/serialization, parsing and executing on data-structures and network messages related to Bitcoin
Swift Bitcoin - Multiplatform Bitcoin SDK for Swift and beyond
secp256kFUN! - pure-rust secp256k1 library optimised for fun
SV2 Libraries - Stratum V2 protocol libraries
Unchained Capital Bitcoin Utilities - Javascript library for working with bitcoin, esp. validation & multisig
Utreexo Accumulator

Mining

bitaxe - Open source ASIC Bitcoin miner hardware
Hashpool - An accountless mining pool that represents mining shares as ecash tokens
HashrateIndex
Mining Insights
NiceHash Miner
OCEAN
Profitibility Calculator
Proto - Part of the Block financial ecosystem
Stratum
Stratum Work - Websocket-based web app that streams realtime mining pool stratum messages to a table for analysis

Miscellaneous

Bitcoin Bounties
Bitcoin Calendar - Bitbo
Bitcoin Donation Portal
Bitcoin Design - Open-source design for bitcoin products
Bitcoin Events
Bitcoin Events and Conferences
Bitcoin Holidays
Bitcoin Obituaries
The Bitcoin Legacy Project - interactive timeline
Bitcoin ROI (Bitbo) - Calculator & tools for Bitcoin
Bitcoin Treasuries
Bitcoin Treasuries (Bitbo)
BitcoinTV.com
Blockstream Research - A Bitcoin-focused cryptography team
BTC Map - Find places to spend sats wherever you are.
A complete history of Bitcoin’s consensus forks
A Cypherpunk’s Manifesto
Keys.lol - list of all private keys
Myths
The Nakamoto Repository - collective knowledge-base of the Bitcoin community
SatoshisPerPerson.com - How many satoshis are there per person in the world?
Sats Converter
Sha256 Algorithm Explained
Skeptics, The: A Tribute to Bold Assertions (Satoshi Nakamoto Institute)
Spirit of Satoshi - Bitcoin LLM
Time in Blocks - convert normal time into Bitcoin block time
Who Funds Bitcoin Development

Nodes

Bitcoin Core App - QML-based Bitcoin Core application
Bitcore
btcd - An alternative full node bitcoin implementation written in Go (golang)
Floresta - A fully-validating Bitcoin node powered by Utreexo, with an integrated Electrum Server
Fully Noded
GordianServer-macOS - Tor-protected full-node GordianServer for macOS
Libbitcoin Server
mako - written in C
myNode
Nigiri Bitcoin - A delicious docker box for special Bitcoin and Liquid cookings
Samourai Dojo
Statoshi

Papers

Bitcoin: A Peer-to-Peer Electronic Cash System
- bitcoin-paper-errata-and-details.md - A description of known problems in Satoshi Nakamoto’s paper
Bitcoin: Cryptopayments Energy Efficiency

Reference

BIPs
Bitcoin Core RPC
Bitcoin Developer
Bitcoin Optech
- Compatibility Matrix
- Topics
Bitcoin Improvement Proposals
Bitcoin Inquisition Numbers And Names Authority
Bitcoin Transcripts - A treasure trove of transcripts associated with Bitcoin and Lightning Network
Bitcoin Wiki
- Privacy
- Weaknesses
BTC Lexicon
Liquid developer documentation
Protocol documentation

Resources

Awesome Bitcoin
Best of Bitcoin Magazine
Bitcoin Glossary
Bitcoin.TV
Bitcoin Canon - Swan
Bitcoin Only
Bitcoin Resources
Bitcoin Tools - Bitbo
BitcoinDev.org - Bitcoin & Lightning Development Resources
Bitcoiner Books - A collection of recommended books by Bitcoiners
Bitcoiner.Guide
- Bitcoin Privacy Guide
End the FUD - The best links to articles debunking Bitcoin FUD
Jameson Lopp
- Technical Resources
learn me a bitcoin
River Learn
Satoshi Nakamoto Institute
- The Complete Satoshi
Technical Bitcoin Search
Try Bitcoin - by satsie
Wallets Supporting Output Descriptors

Script

Bitauth IDE
Bitcoin Script IDE
bitcoin-scriptexec - A work-in-progress Bitcoin Script execution utility
btcdeb - Script debugger
Miniscript
Miniscript Studio
Minsc - A Miniscript-based scripting language for Bitcoin contracts
Opcode Explained - Documenting bitcoin opcodes, one at a time
s-lang - WIP implementation of simplicity high level language
Script
Script Wiz
simfony - Rust-like high-level language that compiles down to Simplicity bytecode
- Simfony IDE
Simplicity - Next-generation smart contracts for Bitcoin
- IDE
- Repository - blockchain programming language designed as an alternative to Bitcoin script
- SimplicityHL - Rust-like high-level language that compiles down to Simplicity bytecode
Simplicity Playground
Tapsim - Bitcoin Tapscript Debugger

Services

Bitcoin Headers over DNS
BitEscrow
Blockstream Explorer API
Strike API
Nodana - 1-click deployments for Bitcoin & Lightning Apps
Voltage - Bitcoin infrastructure made easy
- Voltage Payments - business line of credit designed for Lightning-fast Bitcoin and stablecoin transactions
Zaprite - Bitcoin payments made easy

Tools

Bitcoin Core Config Generator - A TUI for generating Bitcoin Core configuration
Bitcoin Dev Kit
- The Book of BDK
Bitcoin Explorer
Bitcoin Research Kit - A suite of tools designed to extract, compute and display data stored on a Bitcoin Core node
Bitcoin UI Kit - A design system and UI kit for Bitcoin wallet applications
Bitcoin Utils
Bitcoin Wallet Tracker - A lightweight wallet indexer for Bitcoin, available as an Electrum RPC server and a modern HTTP REST API.
bitcoin-tui - A terminal UI for bitcoin
bitcoinfuzz - Differential Fuzzing of Bitcoin protocol implementations and libraries
bitcointools - Tools for bitcoind data files
BitScript - Bitcoin Development Environment
Blockbook - back-end service for Trezor wallet
Blockstream Satellite
bmon - Bitcoin network monitor
bria - enables transaction batching and UTXO management providing the liquidity of on-chain UTXOs to multiple consumers
BTC Price Tool - Explore various platforms to buy Bitcoin and compare their pricing
BTC RPC Explorer - Database-free, self-hosted Bitcoin explorer, via RPC to Bitcoin Core
BTCPay Server - self-hosted, open-source payment processor
Caravan - coordination software for multisig addresses and wallets
Coinswap - Functioning, minimal-viable binaries and libraries to perform a trustless, p2p Maxwell-Belcher Coinswap Protocol
- Teleport Transactions (original repo)
Crypto Commons - Gordian Reference Code & CLI Utilities
Cryptography Toolkit
cyphernode - Modular Bitcoin full-node microservices API server architecture and utilities toolkit
electrs - An efficient re-implementation of Electrum Server in Rust
Electrum Personal Server - Maximally lightweight electrum server for a single user
ElectrumX - Alternative implementation of spesmilo/electrum-server
Elephant - wallet creator
Esplora Block Explorer
Explora - A visual transaction explorer
Fulcrum - A fast & nimble SPV Server
Fuzzamoto - Holistic Fuzzing for Bitcoin Protocol Implementations
Hardware Wallet Interface
InstaMouse environment - Bitcoin Core development environment
Jam - a modern interface for JoinMarket
JoininBox - terminal based graphical menu for JoinMarket
joinmarket-clientserver - Bitcoin CoinJoin implementation with incentive structure to convince people to take part
Labelbase
Mempool
Mule Tools
Next Block - What fee rate will get your transaction confirmed into the next block?
nix-bitcoin - Nix packages and NixOS modules for easily installing full-featured Bitcoin nodes with an emphasis on security
Nodeyez - Display panels to get the most from your node
Podman Regtest Infinity Pro - A robust regtest environment with electrum, esplora, CBF, a block explorer and more using Podman containers
PROXNUT - seamless integration with any Cashu ecash wallet for effortless API data transactions
pushtx - Privacy-focused Bitcoin Transaction Broadcast Tool
pyblock - dashboard
rawBit - visual, node-based editor for constructing and understanding Bitcoin transactions
reserves - Proof-of-Reserves tool for Bitcoin
Seed Tool - experiment and learn how bitcoin wallets are generated using different sources of entropy
Sapio - a framework for creating composable multi-transaction Bitcoin Smart Contracts
- Designing Bitcoin Contracts with Sapio
Swan’s Address Derivation Tool - JavaScript library to derive bitcoin addresses from extended public keys
Transaction Size Calculator (jlopp)
[Transaction size calculator Bitcoin Optech](https://bitcoinops.org/en/tools/calc-size/)
txTenna
UTXOracle - estimates the daily USD price of bitcoin using only your bitcoin Core full node
Wallets Recovery
Warnet - Monitor and analyze the emergent behaviors of P2P networks
ZeroSync - Succinct zero-knowledge proofs

Training

Base58 - bitcoin protocol school
Bitcoin Classes
Bitcoin Core Onboarding
The Bitcoin Dev Project
- Good First Issues
Bitcoin Optech Schnorr Taproot Workshop
Bitcoin Protocol Development Curriculum
Decoding Bitcoin - The interactive learning experience designed to help you become confident in Bitcoin development
Elements Academy
LARP - Base58⛓️🔓’s World Famous Bitcoin LARP
Learning @ Chaincode
Saving Satoshi - Code your way through the mysteries of bitcoin

Videos

Introduction to Bitcoin: what is bitcoin and why does it matter? - Andreas Antonopoulos

Wallets

Aqua
Ashigaru - Samourai replacement
Bitcoin Safe - A bitcoin savings wallet for the entire family
Bitkey - self-custody bitcoin wallet with an app, hardware, and recovery tools
Bitkit - mobile wallet
Blockstream App
Blockstream Green
Blue Wallet - mobile wallet
Border Wallets - quickly and reliably memorise Bitcoin seed phrases
Bull Bitcoin
Cake Wallet
Cove - The simple bitcoin wallet
Envoy - The perfect companion app for your Passport
GordianWallet-iOS - iOS wallet linked by Torgap to your own full-node server
Liana - simple Bitcoin wallet that features a timelocked recovery path for all your coins
Lily Wallet
Misty Breez - mobile app built with Flutter that serves as a reference implementation for the Breez SDK (Nodeless)
Muun - self-custodial wallet for bitcoin and lightning
MyCitadel Desktop - Bitcoin, Lightning and RGB wallet
nakamoto - light-client implementation in Rust
Neutrino - Privacy-Preserving Bitcoin Light Client
Nunchuk - Multisig
Padawan Wallet - A testnet-only bitcoin wallet full of tutorials on how to use bitcoin wallets
ProtonWallet
Rewind Bitcoin
Samourai
Satsigner - UTXO Manager and Message Signer
Simple Bitcoin Wallet - open-source, reproducible, non-custodial, autonomous wallet for Android
Sovran - a privacy-focused ecash & lightning wallet that prioritizes simplicity and rich social experiences
Sparrow Wallet
Specter Desktop - A desktop GUI for Bitcoin Core optimised to work with hardware wallets
Stack Wallet
Void - only sends and receives coinjoins
Volt Wallet
Wallby - the only place where you can access Bitcoin and all its layer 2 networks and side-chain protocols
Wasabi - non-custodial, privacy-focused wallet

Hardware Wallets

Coldcard
Frostsnap
Krux - Open-source signing device firmware for Bitcoin
Passport
Specter-DIY - DIY airgapped hardware wallet that uses QR codes for communication with the host
SeedSigner - air-gapped Raspberry Pi Zero to sign for Bitcoin transactions
TwentyTwo - the hardware wallet for mobile users