Truffle is a development environment, testing framework and asset pipeline for Ethereum, aiming to make life as an Ethereum developer easier.  https://github.com/trufflesuite/truffle

2.0   Ethereum came after Bitcoin.. Vitalik Buterin, one of the writers for Bitcoin Magazine that tried to popularize the technology in the early 2012. He witnessed first-hand the problems in the Bitcoin implementation like wasteful mining hardware, centralized mining community, and lack of network scalability. In 2013, the then 19 year old Vitalik described his vision for Ethereum by extending the concept of Bitcoin beyond just currency. He proposed a platform where developer community and entrepreneurs to build distributed application (Dapps) for the Blockchain network. He referred to this concept of trust beyond just currency as ‘smart contracts’ or even blockchain-based “decentralized autonomous organizations” (DAOs).  https://hackernoon.com/a-brief-history-in-the-evolution-of-blockchain-technology-platforms-1bb2bad8960a

Equity(Security) and Utility tokens

Sidechain is another name for blockchains that run adjacent to Bitcoin and offer more scope for processing contracts. https://gendal.me/2014/10/26/a-simple-explanation-of-bitcoin-sidechains/

Bitcoin and Litecoin.. https://www.trymining.com/pages/asic-vs-gpu

Ether as well.

51% attacks  https://blockgeeks.com/guides/hypothetical-attacks-on-cryptocurrencies/

Expensive and power intensive.  http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read

A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be 1 or 0. A XOR logic gate takes in 2 binary inputs and gives out a high output ONLY when the inputs are different. Meaning, if A and B are inputted to a XOR gate then the out C will be 1 ONLY when A is not equal to B.     https://blockgeeks.com/guides/cryptocurrencies-cryptography/

The merkle tree does not contain a list of all the transactions, rather a hash (digital fingerprint) of all transactions as a tree structure.   https://medium.com/all-things-ledger/bitcoins-implementation-of-blockchain-2be713f662c2

Gas Cost is a static value for how much a computation costs in terms of Gas, and the intent is that the real value of the Gas never  changes, so this cost should always stay stable over time  http://ethdocs.org/en/latest/ether.html

Javascript is the language that Solidity is using to build on the Ethereum Virtual Machine    https://www.quora.com/What-is-the-best-programming-language-to-learn-if-you-want-to-work-on-the-blockchain

Proof of Stake has the same goal as proof of work—to validate transactions and achieve consensus in the chain—and it uses an algorithm but with a different process. With proof of stake, the creator of a new block “is chosen in a deterministic way, depending on its wealth, also defined as a stake.” Since in a proof of stake system, there is no block reward, but the miners, known as forgers, get the transaction fees. Proponents of this shift, including Ethereum co-founder Buterin, like proof of stake for the energy and cost savings realized to get to a distributed form of consensus.    http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read

A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus.   https://en.wikipedia.org/wiki/Byzantine_fault_tolerance

Smart contracts generally are not legal contracts.However, its possible that a smart contract could be accepted as a legal contract but not normally.  Read more about Smart contracts here   https://blockgeeks.com/guides/smart-contracts/

An Encryption Algorithm Transforms Plain Text Into Cipher Text Using A Key  is True  http://www.infosectoday.com/Articles/Intro_to_Cryptography/Introduction_Encryption_Algorithms.htm

Medium has a great post on this

View at Medium.com

PGP – PGP is the most popular public key encryption algorithm  https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b

a search engine that allows users to easily lookup, confirm and validate transactions that have taken place on the Ethereum Blockchain    https://etherscancom.freshdesk.com/support/solutions/articles/35000022140-what-is-etherscan-

BFT is so-named because it represents a solution to the “Byzantine generals’ problem,” a logical dilemma that researchers Leslie Lamport, Robert Shostak and Marshall Pease described in an academic paper published in 1982   https://www.nasdaq.com/article/byzantine-fault-tolerance-the-key-for-blockchains-cm810058

https://developer.ibm.com/courses/all/blockchain-essentials/

Truffle is a development environment, testing framework and asset pipeline for Ethereum, aiming to make life as an Ethereum developer easier.  https://github.com/trufflesuite/truffle

The fabric framework is implemented on Go. Since assets in Hyperledger Fabric are represented in JSON or Binary, hyperledger includes the REST and JSON RPC APIs, events, and an SDK for applications to communicate with the network.

PGP – PGP is the most popular public key encryption algorithm  https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b

An Encryption Algorithm Transforms Plain Text Into Cipher Text Using A Key  is True  http://www.infosectoday.com/Articles/Intro_to_Cryptography/Introduction_Encryption_Algorithms.htm

Distributed Ledger manages the world state and the transaction log in the blockchain. The world state is defined as the state of all transactions on the Blockchain, where all nodes agree that all blocks on the Blockchain are at the same state. It implements three key attributes. It efficiently calculates the cryptographic hash of the entire dataset of each block. It efficiently transmits a minimal “delta” changes to the dataset, when a peer is out of sync and needs to “catch up”. It minimizes the amount of stored data required for each peer to operate.

A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus.   https://en.wikipedia.org/wiki/Byzantine_fault_tolerance

https://developer.ibm.com/courses/all/blockchain-essentials/

2.0   Ethereum came after Bitcoin.. Vitalik Buterin, one of the writers for Bitcoin Magazine that tried to popularize the technology in the early 2012. He witnessed first-hand the problems in the Bitcoin implementation like wasteful mining hardware, centralized mining community, and lack of network scalability. In 2013, the then 19 year old Vitalik described his vision for Ethereum by extending the concept of Bitcoin beyond just currency. He proposed a platform where developer community and entrepreneurs to build distributed application (Dapps) for the Blockchain network. He referred to this concept of trust beyond just currency as ‘smart contracts’ or even blockchain-based “decentralized autonomous organizations” (DAOs).  https://hackernoon.com/a-brief-history-in-the-evolution-of-blockchain-technology-platforms-1bb2bad8960a

Smart contracts generally are not legal contracts.However, its possible that a smart contract could be accepted as a legal contract but not normally.  Read more about Smart contracts here   https://blockgeeks.com/guides/smart-contracts/

a search engine that allows users to easily lookup, confirm and validate transactions that have taken place on the Ethereum Blockchain    https://etherscancom.freshdesk.com/support/solutions/articles/35000022140-what-is-etherscan-

The merkle tree does not contain a list of all the transactions, rather a hash (digital fingerprint) of all transactions as a tree structure.   https://medium.com/all-things-ledger/bitcoins-implementation-of-blockchain-2be713f662c2

The advantages of DPoS are that it is scalable and provides fast transaction verification, but the disadvantage is that it partially centralized and the governance model has not been proven effective in a large project. DPoS is employed by Steemit, EOS, and BitShares.   https://hackernoon.com/an-overview-of-cryptocurrency-consensus-algorithms-9d744289378f

Gas Cost is a static value for how much a computation costs in terms of Gas, and the intent is that the real value of the Gas never  changes, so this cost should always stay stable over time  http://ethdocs.org/en/latest/ether.html

ERC stands for Ethereum Request for Comments. This is an official protocol for proposing improvements to the Ethereum network. ’20’ is the unique proposal ID number.   https://support.exodus.io/article/108-what-is-an-erc20-token-and-does-exodus-support-it

Sidechain is another name for blockchains that run adjacent to Bitcoin and offer more scope for processing contracts. https://gendal.me/2014/10/26/a-simple-explanation-of-bitcoin-sidechains/

51% attacks  https://blockgeeks.com/guides/hypothetical-attacks-on-cryptocurrencies/

Functional requirements will drive technical requirements  Technical requirements explain how a functional requirement will be fulfilled

Proof of Stake has the same goal as proof of work—to validate transactions and achieve consensus in the chain—and it uses an algorithm but with a different process. With proof of stake, the creator of a new block “is chosen in a deterministic way, depending on its wealth, also defined as a stake.” Since in a proof of stake system, there is no block reward, but the miners, known as forgers, get the transaction fees. Proponents of this shift, including Ethereum co-founder Buterin, like proof of stake for the energy and cost savings realized to get to a distributed form of consensus.    http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read

Expensive and power intensive.  http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read

Hyperledger is an open source collaborative effort created for open industrial blockchain development. It started in December 2015 by the Linux Foundation. Linux Foundation’s objectives were to create an environment in which communities of software developers and companies meet and coordinate to build blockchain frameworks