Blockchain: the basic immutable secure data structure behind Bitcoin and all cryptocurrencies.

It’s one of the fundamental crypto building blocks – the underlying ledger in the bookkeeping system that allowed Bitcoin to go 100% decentralized.

Here we discuss blockchain-related topics, including introductory materials and various applications of blockchain (including non-cryptocurrencies).

ELI5: Blockchain explained in simple terms by @Cryptobill
ELI5 Blockchain: A blockchain is a sequence of entries where any attempt to modify a previous entry would modify the entire chain. Each entry is a block which holds some data and p...