What is a Distributed Ledger?

A blockchain != ledger.

A blockchain is a type of distributed ledger.

Blockchain is a sequence of blocks – distributed ledgers do not require such a chain (i.e blocks being linked to one another).

Blockchain’s have ledger features but also have blockchain-features.

Block Structure: Chain of blocks, that are linked to one another No requirement for chain of blocks
Block Sequence (genesis block starts out, then we have 1, 2, 3, 4 – can’t skip 5 to go to 6)No requirement for sequencing in ledger
Public blockchains need tokens (token example = cryptocurrency), Private blockchains do not needTokens are optional
Proof of work not neededProof of Work needed
example: Cordaexample: BTC

Consensus should be considered… see:

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