ELI5 Multisignature Systems
What we call a Bitcoin is simply an unspent, signed transaction on the blockchain. (Technically called a UTXO, for Unspent Transaction (TX) Output.)
When you say you own such ...
ELI5: Cryptocurrency master keys
A cryptocurrency master key is a theoretical concept where one specially crafted cryptographic private key would be able to decrypt ciphertext encrypted using any public key.
Introduction to our commented Bitcoin source code section
Below you’ll find the main commented Bitcoin source code sections (sorted by section name and filename). Core amount.h – Defines the CAmount typedef, implements minimum and maximum valid amount range check. base58.cpp – The encoding function used for Bitcoin addresses. Base58 removes some potentially ambiguous characters from Base64 so Bitcoin addresses can be written down […]
ELI5 PSBT – Partially Signed Bitcoin Transactions
Trustless operation is one of the key concepts behind cryptocurrencies. The idea is that you should not have to personally meet, or trust your peers, in order to perform successful transactions. Experienced crypto users may take this concept for granted, but come to think of it – every real world transaction before cryptocurrencies came about […]
bitcoind.cpp – Commented Bitcoin source code
As mentioned in the Bitcoin-Qt commented source code post, there are several approaches one can take to step into the Bitcoin source in approximately the same order as it runs. For instance, tests are a great source of tiny example programs. Then there’s the ubiquitous Bitcoin-Qt client and, of course, bitcoind. All are good options […]
Will Bitcoin lose its #1 market cap crown?
Ethereum has just overtaken Bitcoin! But, wait! We’re not talking about market cap… As you’ve probably seen reported elsewhere, ETH now (Jun/2018) has more unique active addresses than Bitcoin. Is this a sign of something different looming in the horizon? Will Bitcoin end its 9 year reign as king of cryptocurrencies? Are there other cryptocurrencies […]
Concepts In This Page
SHA256 is an encryption routine which produces a unique and irreversible digest for a given message.
Bitcoin is the world's first viable decentralized cryptocurrency. It was released on January 2009 by Satoshi Nakamoto.
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.
A process or system by which multiple parties are able to reach consensus. In the context of cryptocurrencies, it's the process which allows for everyone to agree on everyone else's money balance. E.g. Bitcoin employs Nakamoto consensus via PoW mining.
A concept of value exchange that does not require physical tokens (coins or paper cash) to be used in order to trade. Cryptocurrencies are a type of digital money.
A distributed ledger is a decentralized financial database with data stored across multiple locations.
Hal Finney was a cryptographer who pioneered the development of Bitcoin. Finney received the first ever Bitcoin transfer.
Public Key Encryption
Public Key Encryption is an encryption method by which the encoding and decoding keys are different. AKA asymmetric encryption. Examples include RSA and elliptic curve cryptography (the latter used in Bitcoin and most cryptocurrencies).