Blockchains are distributed (i.e., without a single repository) and decentralized digital ledgers that are tamper-evident and resistant. At their most basic level, they allow users to record ...

Blockchain technology is a secure ledger system powering financial and computing networks. Its approval processes, like proof-of-work or proof-of-stake, enhance security and transaction efficiency.

Since time immemorial, technological innovations have shaped the structure of commerce and trade. The discovery of electricity encouraged mass production and the advent of steam engines ushered in an ...

A blockchain is a network of decentralized and distributed data (ledger), meaning the users share the ownership and management of the network through computer nodes. As a database, blockchain stores ...

In early 2018, Amos Meiri got the kind of windfall many startup founders only dream of. Meiri’s company, Colu, develops digital currencies for cities—coupons, essentially, that encourage people to ...

Blockchain is the core technology behind Bitcoin and thousands of cryptocurrencies and has promising potential beyond digital currencies. Many, or all, of the products featured on this page are from ...