More from The National:
Sunday's best photos: From Verstappen at China's Grand Prix to Scarborough Sci Fi weekend
Saturday's best photos: From Azalea Festival in Japan to F1 Grand Prix in China
Friday's best photos: From India elections to Formula One in China
Thursday's best photos: From a copper mine in Serbia to elephants in Biyagama
Wednesday's best photos: From a White House lawn departure to street music in Tehran
Tuesday's best photos: From paddling in rainy Dubai to Chinatown in Solomon Islands
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.
More from our neighbourhood series:
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South Africa v India schedule
Tests: 1st Test Jan 5-9, Cape Town; 2nd Test Jan 13-17, Centurion; 3rd Test Jan 24-28, Johannesburg
ODIs: 1st ODI Feb 1, Durban; 2nd ODI Feb 4, Centurion; 3rd ODI Feb 7, Cape Town; 4th ODI Feb 10, Johannesburg; 5th ODI Feb 13, Port Elizabeth; 6th ODI Feb 16, Centurion
T20Is: 1st T20I Feb 18, Johannesburg; 2nd T20I Feb 21, Centurion; 3rd T20I Feb 24, Cape Town
Friday's schedule at the Etihad Airways Abu Dhabi Grand Prix
GP3 qualifying, 10:15am
Formula 2, practice 11:30am
Formula 1, first practice, 1pm
GP3 qualifying session, 3.10pm
Formula 1 second practice, 5pm
Formula 2 qualifying, 7pm
Bharat
Director: Ali Abbas Zafar
Starring: Salman Khan, Katrina Kaif, Sunil Grover
Rating: 2.5 out of 5 stars
The specs
Engine: 4.0-litre, twin-turbocharged V8
Transmission: nine-speed automatic
Power: 630bhp
Torque: 900Nm
Price: Dh810,000
Abu Dhabi race card
5pm Abu Dhabi Fillies Classic Prestige | Dh110,000 | 1,400m
5.30pm Abu Dhabi Colts Classic Prestige | Dh110,000 | 1,400m
6pm Abu Dhabi Championship Listed | Dh180,000 | 1,600m
6.30pm Maiden | Dh80,000 | 1,600m
7pm Wathba Stallions Cup Handicap | Dh80,000 | 1,400m
7.30pm Handicap (TB) |Dh100,000 | 2,400m
While you're here
Gavin Esler: Coronavirus offers stinging rebuke to protectionists
Kareem Shaheen: Pandemics can save us from waging wars
Sholto Byrnes: Why the climate change clash will get nastier
THE SPECS
Engine: 2.0-litre four-cylinder turbo
Transmission: eight-speed automatic
Power: 258hp at 5,000-6,500rpm
Torque: 400Nm from 1,550-4,400rpm
Fuel economy, combined: 6.4L/100km
Price, base: from D215,000 (Dh230,000 as tested)
On sale: now
BUNDESLIGA FIXTURES
Friday (UAE kick-off times)
Cologne v Hoffenheim (11.30pm)
Saturday
Hertha Berlin v RB Leipzig (6.30pm)
Schalke v Fortuna Dusseldof (6.30pm)
Mainz v Union Berlin (6.30pm)
Paderborn v Augsburg (6.30pm)
Bayern Munich v Borussia Dortmund (9.30pm)
Sunday
Borussia Monchengladbach v Werder Bremen (4.30pm)
Wolfsburg v Bayer Leverkusen (6.30pm)
SC Freiburg v Eintracht Frankfurt (9on)
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The specs
- Engine: 3.9-litre twin-turbo V8
- Power: 640hp
- Torque: 760nm
- On sale: 2026
- Price: Not announced yet
While you're here
Hussein Ibish: There are reasons for Democrats and Republicans to be happy
Rashmee Roshan Lall: Who are the women driving Joe Biden's success?
While you're here
Watch: Davos 2021 panel discusses the future of work for women
Alice Haine: Investing in gender parity 'makes good business sense'
Kareem Shaheen: How the pandemic could set Arab women back
Simon Rushton: Home schooling forces UK mothers to quit jobs
MATCH INFO
Champions League quarter-final, first leg
Ajax v Juventus, Wednesday, 11pm (UAE)
Match on BeIN Sports
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
Vaccine Progress in the Middle East
At Everton Appearances: 77; Goals: 17
At Manchester United Appearances: 559; Goals: 253
GAC GS8 Specs
Engine: 2.0-litre 4cyl turbo
Power: 248hp at 5,200rpm
Torque: 400Nm at 1,750-4,000rpm
Transmission: 8-speed auto
Fuel consumption: 9.1L/100km
On sale: Now
Price: From Dh149,900
Specs
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TRAP
Starring: Josh Hartnett, Saleka Shyamalan, Ariel Donaghue
Director: M Night Shyamalan
Rating: 3/5
Tearful appearance
Chancellor Rachel Reeves set markets on edge as she appeared visibly distraught in parliament on Wednesday.
Legislative setbacks for the government have blown a new hole in the budgetary calculations at a time when the deficit is stubbornly large and the economy is struggling to grow.
She appeared with Keir Starmer on Thursday and the pair embraced, but he had failed to give her his backing as she cried a day earlier.
A spokesman said her upset demeanour was due to a personal matter.
More from Rashmee Roshan Lall
MATCH INFO
Uefa Champions League final:
Who: Real Madrid v Liverpool
Where: NSC Olimpiyskiy Stadium, Kiev, Ukraine
When: Saturday, May 26, 10.45pm (UAE)
TV: Match on BeIN Sports
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Shelina Janmohamed: Why shouldn't a spouse be compensated fairly for housework?
Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality
The National Editorial: Is there much to celebrate on International Women's Day 2021?
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MORE ON CORONAVIRUS
Editorial: Coronavirus-stricken communities need solidarity
Dominic Jermey: How epidemics like coronavirus can be caused by the illegal wildlife trade
Sholto Byrnes: Fake news about coronavirus is infecting the world
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The Greatest Royal Rumble card as it stands
50-man Royal Rumble - names entered so far include Braun Strowman, Daniel Bryan, Kurt Angle, Big Show, Kane, Chris Jericho, The New Day and Elias
Universal Championship Brock Lesnar (champion) v Roman Reigns in a steel cage match
WWE World Heavyweight Championship AJ Styles (champion) v Shinsuke Nakamura
Intercontinental Championship Seth Rollins (champion) v The Miz v Finn Balor v Samoa Joe
United States Championship Jeff Hardy (champion) v Jinder Mahal
SmackDown Tag Team Championship The Bludgeon Brothers (champions) v The Usos
Raw Tag Team Championship (currently vacant) Cesaro and Sheamus v Matt Hardy and Bray Wyatt
Casket match The Undertaker v Chris Jericho
Singles match John Cena v Triple H
Cruiserweight Championship Cedric Alexander v tba
VERSTAPPEN'S FIRSTS
Youngest F1 driver (17 years 3 days Japan 2014)
Youngest driver to start an F1 race (17 years 166 days – Australia 2015)
Youngest F1 driver to score points (17 years 180 days - Malaysia 2015)
Youngest driver to lead an F1 race (18 years 228 days – Spain 2016)
Youngest driver to set an F1 fastest lap (19 years 44 days – Brazil 2016)
Youngest on F1 podium finish (18 years 228 days – Spain 2016)
Youngest F1 winner (18 years 228 days – Spain 2016)
Youngest multiple F1 race winner (Mexico 2017/18)
Youngest F1 driver to win the same race (Mexico 2017/18)
Founders: Abdulmajeed Alsukhan, Turki Bin Zarah and Abdulmohsen Albabtain.
Based: Riyadh
Offices: UAE, Vietnam and Germany
Founded: September, 2020
Number of employees: 70
Sector: FinTech, online payment solutions
Funding to date: $116m in two funding rounds
Investors: Checkout.com, Impact46, Vision Ventures, Wealth Well, Seedra, Khwarizmi, Hala Ventures, Nama Ventures and family offices
