• Satoshi Nakamoto, a group or individual, created the underlying technical system on which decentralised cryptocurrencies are built. There were around 1,800 cryptocurrency specifications as of May 2018.
• A community of mutually distrustful people known as miners maintains the safety, integrity, and balance of ledgers in a proof-of-work cryptocurrency system like Bitcoin. Miners utilise their computers to validate and timestamp transactions before entering them into the ledger using a specific timestamping scheme.
• The holders of the linked coin, frequently gathered together in stake pools, validate transactions in a proof-of-stake (PoS) blockchain.
• Most cryptocurrencies are structured to gradually reduce the amount of currency produced, putting a limit on the total amount of cash ever in circulation.

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