What is blockchain?
Blockchain is a form of distributed ledger technology, a digital system in which data is recorded across multiple places at the same time. Unlike traditional databases, DLTs have no central administrator or centralised data storage. They are transparent because the data is visible and, because they are automatically replicated and impossible to be tampered with, they are secure.
The main difference between blockchain and other forms of DLT is the way data is stored as ‘blocks’ – new transactions are added to the existing ‘chain’ of past transactions, hence the name ‘blockchain’. It is impossible to delete or modify information on the chain due to the replication of blocks across various locations.
Blockchain is mostly associated with cryptocurrency Bitcoin. Due to the inability to tamper with transactions, advocates say this makes the currency more secure and safer than traditional systems. It is maintained by a network of people referred to as ‘miners’, who receive rewards for solving complex mathematical equations that enable transactions to go through.
However, one of the major problems that has come to light has been the presence of illicit material buried in the Bitcoin blockchain, linking it to the dark web.
Other blockchain platforms can offer things like smart contracts, which are automatically implemented when specific conditions from all interested parties are reached, cutting the time involved and the risk of mistakes. Another use could be storing medical records, as patients can be confident their information cannot be changed. The technology can also be used in supply chains, voting and has the potential to used for storing property records.
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The National Editorial:Â Is there much to celebrate on International Women's Day 2021?
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MATCH INFO
Uefa Nations League
League A, Group 4
Spain v England, 10.45pm (UAE)
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On Women's Day
Dr Nawal Al-Hosany:Â Why more women should be on the frontlines of climate action
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The National Editorial: Is there much to celebrate on International Women's Day 2021?
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LILO & STITCH
Starring: Sydney Elizebeth Agudong, Maia Kealoha, Chris Sanders
Director: Dean Fleischer Camp
Rating: 4.5/5
Neighbourhood Watch
Mumbai Indians 213/6 (20 ov)
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COMPANY PROFILE
The biog
Name: Younis Al Balooshi
Nationality: Emirati
Education: Doctorate degree in forensic medicine at the University of Bonn
Hobbies: Drawing and reading books about graphic design
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The specs
Engine: 2.0-litre 4cyl turbo
Power: 261hp at 5,500rpm
Torque: 405Nm at 1,750-3,500rpm
Transmission: 9-speed auto
Fuel consumption: 6.9L/100km
On sale: Now
Price: From Dh117,059
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THE SPECS
Engine: 1.5-litre turbocharged four-cylinder
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Torque: 250NmÂ
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Kareem Shaheen on Canada
The specs
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