The latest celebrity news including Vanity Fair’s best dressed list.
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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Electric scooters: some rules to remember
- Riders must be 14-years-old or over
- Wear a protective helmet
- Park the electric scooter in designated parking lots (if any)
- Do not leave electric scooter in locations that obstruct traffic or pedestrians
- Solo riders only, no passengers allowed
- Do not drive outside designated lanes
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Formula Middle East Calendar (Formula Regional and Formula 4)
Killing of Qassem Suleimani
National Editorial: Suleimani has been killed, now we must de-escalate
Mina Al Oraibi: Air strike casts a long shadow over the decade ahead
Jack Moore: Why the assassination is such a monumental gamble
Damien McElroy: A CEO tasked with spreading Iran's influence
Hussein Ibish: Trump's order on solid constitutional ground
Simon Waldman: Cautious Israel keeping a low profile
If you go
The flights
Etihad flies direct from Abu Dhabi to San Francisco from Dh5,760 return including taxes.
The car
Etihad Guest members get a 10 per cent worldwide discount when booking with Hertz, as well as earning miles on their rentals. A week's car hire costs from Dh1,500 including taxes.
The hotels
Along the route, Motel 6 (www.motel6.com) offers good value and comfort, with rooms from $55 (Dh202) per night including taxes. In Portland, the Jupiter Hotel (https://jupiterhotel.com/) has rooms from $165 (Dh606) per night including taxes. The Society Hotel https://thesocietyhotel.com/ has rooms from $130 (Dh478) per night including taxes.
More info
To keep up with constant developments in Portland, visit www.travelportland.com. Good guidebooks include the Lonely Planet guides to Northern California and Washington, Oregon & the Pacific Northwest.