Public Blockchain
By CoinGecko | Updated on Mar 03, 2020
In contrast to permisioned blockchain - where participation and access into the blockchain data requires authorisation, a public blockchain such as Bitcoin is completely is free and available to the public. Anyone can join and view its data. Public blockchain adheres to the original Bitcoin Protocol ethos of not having a central authority to overwrite anyone's authority. Public blockchains are resistance to censorship and foreign interference as it has no single point of failure.
Related Terms
Zero-Knowledge Succinct Non-Interactive Argument of Knowledge (Zk-Snarks)
An acronym for Zero-Knowledge Succinct Non-Interactive Argument of Knowledge, zk-SNARKs refers to a protocol where one can prove posession of a given piece of information (eg a string or hash) without revealing that information and also without any interaction between both the prover & verifier.
Replay Attack
A replay attack is a form of network attack when valid data transmission is fraudulently intercepted, then delayed or resent to mislead the receiver into doing what the hacker wants.
Public Keys
The alphanumeric string which serves as a public receiving address in cryptocurrencies.
Difficulty
A relative measure on how difficult it is to correctly guess a new block
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