1- Consensus determines the truth since all nodes have to agree upon a new candidate block before it is added to the network. Only then should it be permanently integrated into the blockchain and thus new verified block is created.
2- It is different since central databases have special group that control and get to decide what to be true & what to be false. Consequently, everybody else is forced to trust them.
What does it mean when we say that in blockchain, consensus determine the truth?
Since the blockchain is distributed and the nodes decide together what is added to the chain, anything not following the consensus rules will be discarded by the network. The truth of past transactions is thus what a majority of the nodes (following the consensus rules) agree on.
How is this different from how truth is determined in a central database?
In a central database, the truth is determined by the owner of the database. Users of the database ultimately needs to trust the custodian.
1.When you say that blockchian consensus detemines the truth, you stating that due to the fact that everyone can verify the information that is being made within a transaction, all parties can either agree or disagrees from the information that is giving. Showing that you donāt need to trust someone on their word instead you trust the data that is shown to you.
2. The reason why there is a difference to central database concensus is because you must go off of what your told by the manufacture without having access to the travel or transaction history, while in a blckchain you have multiple individuals or computuers that can give you all that info as well can tell you for certainty that what the sell is saying is truthful or just them playing you for your product.
Consensus determines the truth through agreement of participants on the blockchain that decides on the legitimacy of a transaction.
This is different from a central database because consensus provides validation of the truth of a transaction and removes the need of trust.
Consesnsus in blockchain means there is a network of computers all collaborating to verifiy any particular financial/data transaction.
In the traditional model, a centralized computer would verify the transactions, meaning no verifcation from any other points of electronic validation, leaving the tranaction open to vulnerabilities.
Homework on Consensus - Questions
Homework on Consensus Questions
Answer:
It means that the truth is shared by several independent Public Ledger copies across the blockchain. And because each block can verify another block (as in a copy verifies another copy), the truth must be the consensus shared in all copies in the blockchain.
In a central database, the truth is determined by who holds the transaction data. The truth cannot be verified with consensus.
Consensus uses the network where blockchain is running to verify data,
If the network accepts the data it is true if not then it is false.
Central Database is owned by one unity and data can be changed or hacked,
There is no whole network to confirm what is true or not.
What does it mean when we say that in blockchain, consensus determine the truth?
Consensus determines the truth by having several parties or nodes reaffirm that everything is aligned before coming to a decision.
How is this different from how truth is determined in a central database?
In a central database nothing is double checked as well as nothing being quite verified whereas with blockchain every transaction is verified via public ledgers creating a trustless community!
A: Concensus determines the truth becasue in order to attain it there must be a common truth across data sources. With a distributed system the only way to operate is throught consensus.
Truth in a central database is governed by the central entity. Concensus beyond that organization is not required to operateā¦ making concensus optional
In a blockchain, consensus determines the truth because the blockchain consensus mechanism is designed to reward honesty and therefore bad/dishonest actors are rejected.
Truth cannot be determined by consensus in a centralized database because centralized databases do not contain an inherent consensus mechanism and therefore can be easily manipulated.
What does it mean when we say that in blockchain, consensus determine the truth?
Consensus removes the need for trust, and this is achieved through incentives. For
Bitcoin, this incentive is mining rewards.You canāt know peopleās intentions or personalities, but at the end of the day, everybody wants to make money. In order to earn money, it is necessary to play the game according to the rules. Consensus provides this.
How is this different from how truth is determined in a central database?
In a normal database, the accuracy of the information entered in that database depends entirely on the initiative of the person who added it there. For the sustainability of the business, we have to accept that information as true. In Blockchain, on the other hand, we do not need to trust anyone thanks to the consensus, we confirm the accuracy / validity of the information with consensus types such as pow or pos.We ensure decentralization by confirming the entire blockchain record held on different nodes in the consensus.
it is because everyone can verify whether something happend or not
central database only the owner can verify whether something happend or not