BLOCKCHAIN is an open distributed ledger that records transactions in blocks that are secured cryptographically. This is the underlying technology of Bitcoin.
This digital decentralized ledger records transactions permanently, meaning they cannot be changed in future. BLOCKCHAINS keep growing as new transactions are added to the network.
A BLOCKCHAIN is operated by a peer-to-peer network of computers or individuals who adhere to a protocol and validate each transaction that takes place on the network.
The entire transaction, from beginning to end, is accessible to everyone on the blockchain network.
BLOCKCHAINS are broadly divided into permissioned and permissionless. They are also classified into public, private and consortium. Popular ones such as Bitcoin and Ethereum are public blockchains. The technology is being deployed for a wide variety of uses beyond cryptocurrencies.
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April 17, 2026 15:29 ET The ongoing conflict in the Middle East continues to raise concerns for policymakers who worry about the impact of the supply shock and high energy prices on the real economy. Producer price data and various survey results on the housing market were the main news from the U.S. this week. In Europe, industrial production data for the euro area gained attention. GDP figures out of China and the policy move by the Singapore central bank were in focus in Asia.