Blockchain
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 video explanation 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]
- 51% attack
- Block
- Block header
- Candidate block
- Collision resistance
- Cryptocurrency
- Cryptographic hash
- Determinism
- Digital signature
- Distributed consensus
- Double-spend problem
- Entropy
- Genesis block
- Immutable transactions
- Key pair generation
- Ledger
- Merkle proof
- Merkle tree
- Miner
- Mining
- Nonce
- Non-invertibility
- Non-repudiation
- One-way function
- Proof of work
- PuTTYgen
- Self-referential data structure
- SHA256
- Takeover attack
- Transaction pool