Blockchain: Difference between revisions
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* [[Hashing]] (related to this is [[Cryptographic hash|cryptographic hash]], [[Collision resistance|collision resistance]], [[Determinism|determinism]], [[One-way function|one-way function]] and [[Entropy|entropy]]). | * [[Hashing]] (related to this is [[Cryptographic hash|cryptographic hash]], [[Collision resistance|collision resistance]], [[Determinism|determinism]], [[One-way function|one-way function]] and [[Entropy|entropy]]). | ||
* [[Digital signature]] (related to this is [[Key pair generation|key pair generation]] and [[SHA256]]) | * [[Digital signature]] (related to this is [[Key pair generation|key pair generation]] and [[SHA256]]) | ||
* [[Ledger]] | |||
* [[Block]] (related to this is [[Block header]] and [[Candidate block]]) | * [[Block]] (related to this is [[Block header]] and [[Candidate block]]) | ||
* [[Mining]] (related to this is [[Miner|miner]], [[Nonce|nonce]] and [[Proof of work|proof of work]]) | * [[Mining]] (related to this is [[Miner|miner]], [[Nonce|nonce]] and [[Proof of work|proof of work]]) | ||
Revision as of 10:42, 9 March 2020
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, determinism, one-way function and entropy).
- Digital signature (related to this is key pair generation and SHA256)
- Ledger
- Block (related to this is Block header and Candidate block)
- Mining (related to this is miner, nonce and proof of work)
Other ideas in blockchain[edit]
Everything below this line is not yet completed for student learning[edit]
- Cryptocurrency
- Distributed consensus
- Double-spend problem
- Non-invertibility
- Non-repudiation
- Self-referential data structure
- Takeover attack