Blockchain: Difference between revisions

Revision as of 19:11, 8 March 2020

Advanced 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]

A ledger is a permanent summary of all amounts entered in supporting journals which list individual transactions by date.^[4]

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:

Start here to understand blockchain[edit]

Trust and Currency
Hashing (related to this is cryptographic hash, collision resistance and one-way function)
Digital signature (related to this is key pair generation and SHA256)
Block
Block header
Candidate block
Ledger

More advanced ideas in blockchain[edit]

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

References[edit]

[1] ttp://www.flaticon.com/

[2] ttps://en.wikipedia.org/wiki/Blockchain

[3] ttps://en.wikipedia.org/wiki/Blockchain

[4] ttps://en.wikipedia.org/wiki/Ledger

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@@ Line 24: / Line 24: @@
 * [[Trust and Currency]]
-* [[Hashing]] (related to this is [[Cryptographic hash|cryptographic hash]] and [[Collision resistance|collision resistance]])
+* [[Hashing]] (related to this is [[Cryptographic hash|cryptographic hash]], [[Collision resistance|collision resistance]] and [[One-way function|one-way function]])
 * [[Digital signature]] (related to this is [[Key pair generation|key pair generation]] and [[SHA256]])
 * [[Block]]