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== Third Edition Changes
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=== 1. Introduction
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* Bitcoin Uses, Users, and Their Stories
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Minor changes to the stories, updating to reflect current common uses and current price
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=== 2. How Bitcoin Works
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* Buying a [line-through]#Cup of Coffee# Laptop
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Updated Alice and Bob's story. Buying a cup of coffee is no longer sensible "on-chain", due to the value of Bitcoin and on-chain fees. Instead, small retail purchases are now a use-case for the Lightning Network. In the updated story, Alice is buying a laptop from an e-commerce store run by Bob.
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* Bitcoin Transactions
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Updated all the transactions to use native-Segwit addresses that start with "bc1", instead of legacy bitcoin addresses that start with "1".
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* Transaction Inputs and Outputs
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* Transaction Chains
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* Making Change
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* Common Transaction Forms
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* Constructing a Transaction
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* Getting the Right Inputs
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* Creating the Outputs
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* Adding the Transaction to the Ledger
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* Bitcoin Mining
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* Mining Transactions in Blocks
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* Spending the Transaction
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=== 3. Bitcoin Core: The Reference Implementation
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* Bitcoin Development Environment
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* Compiling Bitcoin Core from the Source Code
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* Selecting a Bitcoin Core Release
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* Configuring the Bitcoin Core Build
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* Building the Bitcoin Core Executables
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* Running a Bitcoin Core Node
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* Configuring the Bitcoin Core Node
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* Bitcoin Core Application Programming Interface (API)
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* Getting Information on the Bitcoin Core Client Status
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* Exploring and Decoding Transactions
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* Exploring Blocks
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* Using Bitcoin Core’s Programmatic Interface
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* Alternative Clients, Libraries, and Toolkits
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* C/C++
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* JavaScript
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* Java
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* PHP
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* Python
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* Ruby
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* Go
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* Rust
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* C#
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* Objective-C
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=== 4. Keys, Addresses
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* Introduction
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* Public Key Cryptography and Cryptocurrency
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* Private and Public Keys
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* Private Keys
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* Public Keys
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* Elliptic Curve Cryptography Explained
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* Generating a Public Key
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* Bitcoin Addresses
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* Base58 and Base58Check Encoding
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* Key Formats
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* Implementing Keys and Addresses in C++
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* Implementing Keys and Addresses in Python
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* Advanced Keys and Addresses
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* Encrypted Private Keys (BIP-38)
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* Pay-to-Script Hash (P2SH) and Multisig Addresses
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* Vanity Addresses
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* Paper Wallets
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=== 5. Wallets
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* Wallet Technology Overview
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* Nondeterministic (Random) Wallets
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* Deterministic (Seeded) Wallets
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* HD Wallets (BIP-32/BIP-44)
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* Seeds and Mnemonic Codes (BIP-39)
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* Wallet Best Practices
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* Using a Bitcoin Wallet
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* Wallet Technology Details
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* Mnemonic Code Words (BIP-39)
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* Creating an HD Wallet from the Seed
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* Using an Extended Public Key on a Web Store
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=== 6. Transactions
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* Introduction
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* Transactions in Detail
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* Transactions—Behind the Scenes
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* Transaction Outputs and Inputs
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* Transaction Outputs
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* Transaction Inputs
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* Transaction Fees
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* Adding Fees to Transactions
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* Transaction Scripts and Script Language
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* Turing Incompleteness
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* Stateless Verification
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* Script Construction (Lock + Unlock)
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* Pay-to-Public-Key-Hash (P2PKH)
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* Digital Signatures (ECDSA)
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* How Digital Signatures Work
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* Verifying the Signature
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* Signature Hash Types (SIGHASH)
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* ECDSA Math
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* The Importance of Randomness in Signatures
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* *NEW: Schnorr Signatures*
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*
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Bitcoin Addresses, Balances, and Other Abstractions
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=== 7. Advanced Transactions And Scripting
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* Introduction
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* Multisignature
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* Pay-to-Script-Hash (P2SH)
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* P2SH Addresses
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* Benefits of P2SH
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* Redeem Script and Validation
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* Data Recording Output (RETURN)
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* Timelocks
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* Transaction Locktime (nLocktime)
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* Check Lock Time Verify (CLTV)
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* Relative Timelocks
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* Relative Timelocks with nSequence
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* Relative Timelocks with CSV
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* Median-Time-Past
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* Timelock Defense Against Fee Sniping
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* Scripts with Flow Control (Conditional Clauses)
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* Conditional Clauses with VERIFY Opcodes
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* Using Flow Control in Scripts
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* Complex Script Example
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* Segregated Witness
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* Why Segregated Witness?
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* How Segregated Witness Works
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* Soft Fork (Backward Compatibility)
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* Segregated Witness Output and Transaction Examples
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* Upgrading to Segregated Witness
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* Segregated Witness’ New Signing Algorithm
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* Economic Incentives for Segregated Witness
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* *NEW: Segwit v1: Taproot*
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* *NEW: MAST *
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* *NEW: Tapscript*
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* *NEW: Taproot *
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=== 8. The Bitcoin Network
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* Peer-to-Peer Network Architecture
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* Node Types and Roles
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* The Extended Bitcoin Network
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* Bitcoin Relay Networks
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* Network Discovery
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* Full Nodes
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* Exchanging “Inventory”
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* Simplified Payment Verification (SPV) Nodes
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* Bloom Filters
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* How Bloom Filters Work
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* How SPV Nodes Use Bloom Filters
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* SPV Nodes and Privacy
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* NEW Neutrino
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* NEW Compact Blocks
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* Encrypted and Authenticated Connections
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* Tor Transport
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* Peer-to-Peer Authentication and Encryption
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* Transaction Pools
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=== 9. The Blockchain
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* Introduction
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* Structure of a Block
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* Block Header
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* Block Identifiers: Block Header Hash and Block Height
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* The Genesis Block
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* Linking Blocks in the Blockchain
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* Merkle Trees
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* Merkle Trees and Simplified Payment Verification (SPV)
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* Bitcoin’s Test Blockchains
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* Testnet—Bitcoin’s Testing Playground
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* Segnet—The Segregated Witness Testnet
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* Regtest—The Local Blockchain
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* *NEW: Signet - The POA Test Blockchain*
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* Using Test Blockchains for Development
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=== 10. Mining And Consensus
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* Introduction
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* Bitcoin Economics and Currency Creation
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* Decentralized Consensus
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* Independent Verification of Transactions
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* Mining Nodes
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* Aggregating Transactions into Blocks
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* The Coinbase Transaction
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* Coinbase Reward and Fees
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* Structure of the Coinbase Transaction
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* Coinbase Data
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* Constructing the Block Header
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* Mining the Block
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* Proof-of-Work Algorithm
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* Target Representation
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* Retargeting to Adjust Difficulty
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* Successfully Mining the Block
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* Validating a New Block
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* Assembling and Selecting Chains of Blocks
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* Blockchain Forks
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* Mining and the Hashing Race
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* The Extra Nonce Solution
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* Mining Pools
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* Consensus Attacks
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* Changing the Consensus Rules
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* Hard Forks
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* Hard Forks: Software, Network, Mining, and Chain
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* Diverging Miners and Difficulty
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* Contentious Hard Forks
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* Soft Forks
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* Criticisms of Soft Forks
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* Soft Fork Signaling with Block Version
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* BIP-34 Signaling and Activation
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* BIP-9 Signaling and Activation
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* NEW BIP-8 Activation
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* *NEW: Speedy Trial Activation*
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* Consensus Software Development
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=== 11. Bitcoin Security
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* Security Principles
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* Developing Bitcoin Systems Securely
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* The Root of Trust
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* User Security Best Practices
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* Physical Bitcoin Storage
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* Hardware Wallets
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* Balancing Risk
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* Diversifying Risk
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* Multisig and Governance
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* Survivability
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* Conclusion
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=== 12. Blockchain Applications
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* Introduction
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* Building Blocks (Primitives)
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* Applications from Building Blocks
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* Colored Coins
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* Using Colored Coins
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* Issuing Colored Coins
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* Colored Coins Transactions
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* Counterparty
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* Payment Channels and State Channels
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* State Channels—Basic Concepts and Terminology
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* Simple Payment Channel Example
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* Making Trustless Channels
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* Asymmetric Revocable Commitments
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* Hash Time Lock Contracts (HTLC)
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* Routed Payment Channels (Lightning Network)
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* Basic Lightning Network Example
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* Lightning Network Transport and Routing
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* Lightning Network Benefits
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* Conclusion
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=== A. The Bitcoin Whitepaper By Satoshi Nakamoto
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=== B. Transaction Script Language Operators, Constants, And Symbols
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=== C. Bitcoin Improvement Proposals
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=== D. Bitcore
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=== E. Pycoin, Ku, And Tx
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=== F. Bitcoin Explorer (Bx) Commands
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=== *NEW: BTCD*
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