256 Bit Integer commented uint256.cpp from Bitcoin Core source code
If you’ve developed systems in C or C++ before then you’re probably familiar with the stdint.h (cstdint for C++) typedefs. Since there’a lot of variation between platforms, stdint.h standardizes integer type names in an intuitive way. A uint8_t is an 8-bit unsigned integer and a uint64_t is a 64 bit unsigned integer. What you won’t […]
ELI5 Bitcoin Puzzle Transactions
As the name implies, Bitcoin puzzle transactions are created as a challenge and not for the usual purpose of monetary transfer. Puzzles can be published for several reasons, including software test bounties, marketing campaigns or just for fun. Early Puzzles In the early days of Bitcoin, when $BTC coins could be found for free on […]
shafs – SHA256 a filesystem and store it on SQLite. Find duplicate files, organize your data
shafs is a tool to help you SHA256 an entire filesystem, file by file, storing its hash and file size in a SQLite database. Dependencies shafs requires sqlite3 On Ubuntu do: Please check your distribution for the appropriate packages. Build Installation To install locally, uncomment last line in build.sh and re-run it or run : Manual Build […]
Bitcoin Toolbox Home
Crypto.BI Toolbox is a set of tools for local blockchain exploration. It uses data from the raw Bitcoin block data files and does not require a network connection, API’s and other 3rd party data sources. It’s built of a combination of C++ libraries, Python integration and many other planned components that aim to make blockchain […]
Concepts In This Page
Bitcoin Improvement Proposals entry #174 establishes the Partially Signed Bitcoin Transaction Format
Bitcoin is the world's first viable decentralized cryptocurrency. It was released on January 2009 by Satoshi Nakamoto.
Acronym for Partially Signed Bitcoin Transaction
C++ programming language - used to implement Bitcoin Core, as well as most first generation cryptocurrencies, high performance Bitcoin miners and other critical software.
Explore software programming topics. Cryptocurrencies, programming languages, tutorials and software development in general.
Source code is the machine logic implemented in a programming language. Fortunately, the most popular cryptocurrencies are open source, allowing us to study their source code.
Hal Finney was a cryptographer who pioneered the development of Bitcoin. Finney received the first ever Bitcoin transfer.
SHA256 is an encryption routine which produces a unique and irreversible digest for a given message.
An investing strategy where the trader goes against the current trend in the markets. Contrarian investors buy when the markets are deep in the red and sell when there's buying euphoria.
A Bitcoin Puzzle is a cryptographic puzzle which carries Bitcoin as a reward. Those able to break the cryptography obtain access to the private key needed to unlock the Bitcoin.