Bitcoin Programming
This book is about teaching Bitcoin programming; to help people delve deeper Exercise 6.17 The Bitcoin white paper (PDF) is stored on the blockchain.
Untitled
Programming Bitcoin. Learn How to Program Bitcoin from Scratch. Jimmy Song story pics torials fers & Dea ghlights ttings. Support. Sign Out
Modeling Bitcoin Protocols with Probabilistic Logic Programming
Keywords: Bitcoin Blockchain
Bitcoin: Un Sistema de Efectivo Electrónico Usuario-a-Usuario 1
Traducido al Español de bitcoin.org/bitcoin.pdf por Angel León - www.diariobitcoin.com. Abstracto. Una versión puramente electrónica de efectivo permitiría
Step by Step Towards Creating a Safe Smart Contract: Lessons and
18 nov 2015 extend Bitcoin's design by offering a rich programming language for writing “smart contracts.” Smart contracts are user-defined programs ...
Programming Bitcoin
For example: “Programming Bitcoin by Jimmy Song. (O'Reilly). The creator of this transaction split up the whitepaper PDF into 64-byte chunks.
Mastering Bitcoin
If you're a programmer sell your programming skills. If you have an online store
Users Manual
Manual. Mode. Indicator. Auto-tuning. Indicator. The left diagram shows program no. 6 for BTC-9100 with version 24. The program no. for BTC-7100 is 13.
blockchain-programming-in-csharp.pdf
Blockchain Programming in C#. Authored by Nicolas Dorier. Contributor for NBitcoin. The .NET Bitcoin Framework. Co-authored With Bill Strait.
VIRTUAL CURRENCY SCHEMES OCTOBER 2012
21 oct 2012 The first case study in this report relates to Bitcoin a virtual currency ... Designed and implemented by the Japanese programmer Satoshi ...
Bitcoin Programming - kkarasavvascom
Bitcoin mining is the process of solving the PoW puzzle and selecting the next valid block in a way that is undisputed and thus achieve consensus on the current blockchain state Bitcoin uses the Hashcash PoW algorithm [1] for its mining Figure 1 4: All nodes will eventually receive all transactions but they are free to include
Bitcoin Programming
programming decentralized applications engage in blockchain governance systems reason about both privacy and scalability trade-offs among different cryptocurrencies and research and consider relevant jurisdictional guidelines and regulations The best way to be equipped to speak to engage with and apply cryptocurrency to your
Andreas M Antonopoulos
This book is mostly intended for coders If you can use a programming language this book will teach you how cryptographic currencies work how to use them and how to develop software that works with them The first few chapters are also suitable as an in-depth introduction to bitcoin for non-coders - those trying to understand the inner
Cryptocurrencies and Blockchain Technologies
1 The starting point: Bitcoin mechanics 2 Consensus protocols 3 Ethereum and decentralized applications 4 DeFi: decentralized applications in finance 5 Private transactions on a public blockchain (SNARKs and zero knowledge proofs) 6 Scaling the blockchain: getting to 10K Tx/sec 7 Interoperability among chains: bridges and wrapped coins
Simplicity: A New Language for Blockchains - Blockstream
A program in BitcoinScript is a sequence of operations for its stack machine Bitcoin Script hasconditionals but no loops thus all programs halt and the language is not Turingcomplete Originally these programs were committed as part of the output eld of aBitcoin transaction
Searches related to programming bitcoin pdf filetype:pdf
Bitcoin is a virtual monetary unit and therefore has no physical representation A Bitcoin unit is divisible and can be divided into 100 million “Satoshis” the smallest fraction of a Bitcoin The Bitcoin Blockchain is a data file that carries the records of all past Bitcoin transactions including the creation of new Bitcoin units
How to create bitcoin transactions programmatically?
- Creating Transactions Programmatically The Bitcoin node allows the creation of the basic transactions. It does not support arbitrary scripts. We can create those programmatically by explicitly specifying the locking/unlock- ing conditions.
When did you start teaching bitcoin programming?
- I started teaching Bitcoin programming in 2016. Every year I was trying to improve and update my material to keep it as relevant as possible. Luckily, Bitcoin progresses at a steady pace while always keeping backwards compatibility.
What are the inputs and outputs of a bitcoin transaction?
- 6.1 Transactions A transaction sends bitcoins from one address to another and it consists of 1+ inputs and 1+ outputs. The inputs of a transaction consist of outputs of previous transactions. When an output is spend it can never be used again1. All the bitcoins are transferred elsewhere (to a recipient, back to yourself as change, etc.).
What are the features of bitcoin software?
- After installing the Bitcoin software10we can notice that it includes several executables, one providing the core functionality and the other for interaction and extra utility: bitcoind: The daemon server that implements the Bitcoin protocol and networking func- tionality. It also includes a wallet.
Jimmy Song
Programming
Bitcoin
Learn How to Program Bitcoin from Scratch
Jimmy Song
Programming Bitcoin
Learn How to Program Bitcoin from Scratch
978-1-492-03149-9
[LSI]Programming Bitcoin by Jimmy Song Copyright © 2019 Jimmy Song. All rights reserved.Printed in the United States of America.
Published by O'Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.O'Reilly books may be purchased for educational, business, or sales promotional use. Online editions are
also available for most titles (http://oreilly.com). For more information, contact our corporate/institutional
sales department: 800-998-9938 or corporate@oreilly.com.Editors: Mike Loukides and Michele CroninProduction Editor: Kristen Brown
Copyeditor: James Fraleigh
Proofreader: Rachel HeadIndexer: Judy McConville
Interior Designer: David Futato
Cover Designer: Karen Montgomery
Illustrator: Rebecca DemarestMarch 2019:
First Edition
Revision History for the First Edition
2019-02-08: First Release
See http://oreilly.com/catalog/errata.csp?isbn=9781492031499 for release details.The O'Reilly logo is a registered trademark of O'Reilly Media, Inc. Programming Bitcoin, the cover image,
and related trade dress are trademarks of O'Reilly Media, Inc.The views expressed in this work are those of the author, and do not represent the publisher's views.
While the publisher and the author have used good faith efforts to ensure that the information andinstructions contained in this work are accurate, the publisher and the author disclaim all responsibility
for errors or omissions, including without limitation responsibility for damages resulting from the use of
or reliance on this work. Use of the information and instructions contained in this work is at your own
risk. If any code samples or other technology this work contains or describes is subject to open source
licenses or the intellectual property rights of others, it is your responsibility to ensure that your use
thereof complies with such licenses and ghts.Table of Contents
Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . xiPreface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . xiii 1.Finite Fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 1Learning Higher-Level Math 1
Finite Field Definition 2
Defining Finite Sets 3
Constructing a Finite Field in Python 3
Exercise 1
5Modulo Arithmetic 5
Modulo Arithmetic in Python 7
Finite Field Addition and Subtraction 8
Exercise 2
9Coding Addition and Subtraction in Python 9
Exercise 3
10Finite Field Multiplication and Exponentiation 10
Exercise 4
11Exercise 5
11Coding Multiplication in Python 12
Exercise 6
12Coding Exponentiation in Python 12
Exercise 7
13Finite Field Division 13
Exercise 8
15Exercise 9
16Redefining Exponentiation 16
Conclusion
17 iii2.Elliptic Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 19Definition
19Coding Elliptic Curves in Python 26
Exercise 1
27Exercise 2
27Point Addition 27
Math of Point Addition 31
Coding Point Addition 33
Exercise 3
34Point Addition for When x
1≠x2 35
Exercise 4
36Coding Point Addition for When x
1≠x2 36
Exercise 5
36Point Addition for When P
1 = P2 37
Exercise 6
38Coding Point Addition for When P
1 = P2 38
Exercise 7
39Coding One More Exception 39
Conclusion
403.Elliptic Curve Cryptography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Elliptic Curves over Reals 41
Elliptic Curves over Finite Fields 42
Exercise 1
44Coding Elliptic Curves over Finite Fields 44
Point Addition over Finite Fields 45
Coding Point Addition over Finite Fields 47
Exercise 2
47Exercise 3
47Scalar Multiplication for Elliptic Curves 47
Exercise 4
49Scalar Multiplication Redux 50
Mathematical Groups 51
Identity 51
Closure
52Invertibility 53
Commutativity 54
Associativity 55
Exercise 5
56Coding Scalar Multiplication 57
Defining the Curve for Bitcoin 58
Working with secp256k1 60
iv | Table of ContentsPublic Key Cryptography 61
Signing and Verification 62
Inscribing the Target 63
Verification in Depth 65
Verifying a Signature 66
Exercise 6
67Programming Signature Verification 67
Signing in Depth 68
Creating a Signature 68
Exercise 7
69Programming Message Signing 70
Conclusion
724.Serialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 73Uncompressed SEC Format 73
Exercise 1
75Compressed SEC Format 75
Exercise 2
79DER Signatures 79
Exercise 3
81Base58
81Transmitting Your Public Key 81
Exercise 4
83Address Format 83
Exercise 5
84WIF Format 84
Exercise 6
85Big- and Little-Endian Redux 85
Exercise 7
86Exercise 8
86Exercise 9
86Conclusion
865.
Transactions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 87Transaction Components 87
Version
90Exercise 1
90Inputs
90Parsing Script 95
Exercise 2
96Outputs
96Exercise 3
97Table of Contents | v
Locktime
98Exercise 4
98Exercise 5
98Coding Transactions 99
Transaction Fee 100
Calculating the Fee 102
Exercise 6 102
Conclusion 1026.
Script. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 103Mechanics of Script 103
How Script Works 105
Example Operations 105
Coding Opcodes 106
Exercise 1 107
Parsing the Script Fields 107
Coding a Script Parser and Serializer 108
Combining the Script Fields 111
Coding the Combined Instruction Set 111
Standard Scripts 111
p2pk 112Coding Script Evaluation 115
Stack Elements Under the Hood 117
Exercise 2 118
Problems with p2pk 118
Solving the Problems with p2pkh 120
p2pkh 120
Scripts Can Be Arbitrarily Constructed 124
Exercise 3 127
Utility of Scripts 127
Exercise 4 127
SHA-1 Piñata 128
Conclusion 128
7.Transaction Creation and Validation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Validating Transactions 129
Checking the Spentness of Inputs 130
Checking the Sum of the Inputs Versus the Sum of the Outputs 130Checking the Signature 131
Exercise 1 135
Exercise 2 135
Verifying the Entire Transaction 135
vi | Table of ContentsCreating Transactions 136
Constructing the Transaction 136
Making the Transaction 139
Signing the Transaction 141
Exercise 3 141
Creating Your Own Transactions on testnet 141
Exercise 4 142
Exercise 5 142
Conclusion 1428.
Pay-to-Script Hash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 143Bare Multisig 143
Coding OP_CHECKMULTISIG 148
Exercise 1 148
Problems with Bare Multisig 148
Pay-to-Script-Hash (p2sh) 149
Coding p2sh 156
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