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The importance of the blocks being cryptographically linked together is to maintain the security of the blockchain.
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It is like a chain link, hence block"chain", this structure is dependent on the previous link and block and if one were to fail then the system would fail.
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1 To contain integrity and provide difficulty to change the transactions
2 Block number - nounce - data - previous block hash - current block hash
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- to prevent hackers. to safeguard the transactions.
- block + hash
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- Why is it important that the blocks are cryptographically linked together?
To insure the integrity of the system, no one block can be altered without messing up the entire chain. - What does the block structure look like in bitcoin?
The block includes the list of transactions, the hash of the previous block and the nonce the miners guess.
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Why is it important that the blocks are cryptographically linked together?
For security. If one block is altered even the slightest bit, since they are linked together by a mathematical puzzle, it breaks the link to all other blocks.
What does the block structure look like in bitcoin?
previous block hash, current block transaction data, and the nonce
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- To secure that nobody tries to double spend or changes the data inside the validated blocks (Attack the blockchain)
- Hash of the previous block + data of the current block + hash of the current block. (like a chain)
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What is the program that Ivan is using in the āMining Visually Demonstratedā class?
Iāve tried googling but canāt seem to find anything similar.
1 To ensure the whole system follow the rules, no one can change, modify, or delete any history transaction practically.
2 In the block we have the previous hash, transactions, and nonce. The hash of current block base on all these three factors.
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avoid double spending, and remove censorshipā¦ in other words to secure the network and improve integrity!
the previous hash, all inputs and outputs and nonce used to make a new hash for the new block and to insert the block to the chain .
please tell me if i wrong somewhere:) this course very important to me and i wanna be sure that i understand correctly all the course stuffsā¦ (english not my native language)
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Looks good to me 
if you want to learn the block structure in more detail than look no further than the great Bitcoin book 
https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch09.asciidoc
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thx its looks interesting i will try to read this but maybe i dont understand some due to my not good enough english 
but i am try later to read and understand this article 
- To develop data ingrate by ensuring the blocks are immutable
- As Follows:
Version
Previous Hash
Merkle root hash
Timestamp
Difficulty target
Nonce
Transaction List
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This is important to ensure the safety of the network. As each of the blocks have cryptographic relations to eachother ensures that a block further back in the chain cannot be changed without all following blocks and the links between them will be broken as the cryptographic relation is compromised.
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The block structure in bitcoin consist of the following
a)Hash from Previous block
b)Transactions
c) Nonce
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- then if a block in the past is changed the intire blockchain notices that and it becomes invalid
- TX hash input and ouputs
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1.Its give security which contains information about previous and future block.
2.Tx time,tx size,blocksize,hash of chain
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Yes, that is it!! Thank you!
It contains other metadata than just tx data. Do you know what they are?
What is tx time?
transaction time ;)am i correct?