Blockchain: Difference between revisions

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== See also ==  
== See also ==  


* [[Trust and Currency]]
* [[51% attack]]
* [[51% attack]]
* [[Block]]
* [[Block]]

Revision as of 13:25, 8 March 2020

Computational thinking, problem-solving and programming[1]

A block chain is a growing list of records, called blocks, that are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree).[2]


A blockchain is a decentralized, distributed, and oftentimes public, digital ledger that is used to record transactions across many computers so that any involved record cannot be altered retroactively, without the alteration of all subsequent blocks[3]

Videos[edit]

The video below is easily the best I have found explaining blockchain. I would suggest you watch it several times.

The video below is a very good high-level overview of blockchain:

See also[edit]

Everything below this line is not yet completed for student learning[edit]

References[edit]