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.
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ELI5 Proof of Stake (PoS) – How does PoS work?
In the cryptocurrency universe, Proof of Stake (PoS) is one of the most popular alternatives to the Proof of Work (PoW) family of consensus mechanisms. While PoW systems invest large amounts of energy to make sure transactions are legit, PoS does not require mining hardware. Proof of Stake “miners” (stakers) must lock a financial stake […]
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 […]
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 […]
Proof of Elapsed Time (POET) Summary [Cryptocurrency consensus mechanisms]
In this poetically named consensus mechanism, network participants prove that they have slept for a random amount of time before being able to mint a block. POET was released by Intel in 2016 and was originally aimed at trusted computing using Intel CPU’s. A special instruction set called Software Guard Extensions (SGX) allows programs to […]
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).