Altcoins.

The blockchain currencies that evolved after Bitcoin are generally known as "altcoins", which stands for alternative coins. Altcoins refer to any cryptocurrency other than Bitcoin, and there are currently thousands of different altcoins in circulation. Examples of popular altcoins include Ethereum, Litecoin, Ripple, and Bitcoin Cash, among others. Each altcoin has its own unique features, including different consensus mechanisms, block sizes, transaction speeds, and so on.

The output of hashing is popularly known as a digest.

Hashing is the process of taking an input (such as a message or data file) and producing a fixed-length string of characters, which is the digest or hash. This hash is unique to the input data, and even a small change in the input data will result in a completely different hash. Hashing is widely used in cryptography and blockchain technology to ensure the integrity and authenticity of data.

Distributed Network, Cryptography, Public Ledger.

These three concepts form the foundation of blockchain technology. The distributed network allows for multiple nodes to participate in the network and validate transactions, creating a decentralized system. Cryptography provides secure communication and data privacy, ensuring that transactions on the blockchain are secure and tamper-proof. The public ledger records all transactions on the blockchain in a transparent and immutable way, allowing for anyone to verify and track the history of transactions. Together, these concepts enable trust and transparency in a decentralized system, making blockchain a revolutionary technology for many industries.

Multichain is an example of a Private Blockchain.

Multichain is a platform for building and deploying private blockchains, which are designed to be used within a specific organization or group of organizations. Private blockchains like Multichain allow for faster transactions, greater control over data privacy, and increased scalability compared to public blockchains like Bitcoin and Ethereum. Multichain also provides a range of features such as permission management, asset issuance, and transaction metadata, making it a popular choice for enterprise applications.

False

True

Block rewards are given to the nodes or miners who successfully add a new block to the blockchain, not for every successful transaction verification in the network. The block rewards serve as an incentive for nodes to participate in the consensus mechanism and help secure the network. In the case of Bitcoin, for example, the current block reward is 6.25 BTC, which is awarded to the miner who successfully adds a new block to the Bitcoin blockchain. The block reward is designed to decrease over time, with the goal of eventually reaching a maximum supply of 21 million BTC.

True. Smart contracts are self-executing contracts with the terms of the agreement between buyer and seller being directly written into lines of code. These contracts can automatically enforce the rules and conditions of the agreement, including the transfer of digital currencies between parties based on predefined conditions. Therefore, smart contracts can enable greater automation and control of digital currency transfers.

Open Decentralized.

Blockchain provides an open and decentralized database for every transaction involving value. This means that the database is accessible to anyone with an internet connection and is not owned or controlled by any central authority. Instead, the database is maintained by a network of nodes, each with a copy of the database and the ability to validate transactions. This decentralized approach ensures transparency, immutability, and security of transactions, without the need for intermediaries such as banks or governments.

Public Blockchain.

The term "for the people, by the people, and of the people" is often used to describe public blockchains. Public blockchains like Bitcoin and Ethereum are decentralized networks that are open to anyone, without requiring permission or access controls. Anyone can participate in the network by running a node, validating transactions, and contributing to the security and consensus of the network. This makes public blockchains highly transparent, censorship-resistant, and trustworthy, with no central authority controlling the network.

True.

Consortium blockchain has a predefined set of nodes that are allowed to write data onto the blockchain. These nodes are typically controlled by a group of organizations that have agreed to participate in the consortium and have a stake in the network. Unlike public blockchains such as Bitcoin or Ethereum, where anyone can participate as a node and write data onto the blockchain, consortium blockchains are designed to be more private and controlled. This makes them suitable for enterprise applications where data privacy and confidentiality are paramount. However, consortium blockchains are still decentralized and allow for multiple parties to verify and validate transactions on the network.