UN disappointed as Iran fails to explain mystery nuclear traces

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.

Catch of the day at Ajman Fish Market

Shiite district of Abu Dhabi proves tolerance is 'not just a UAE catchphrase'

The village community hidden among the skyscrapers of Dubai

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

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

Director: Ali Abbas Zafar

Starring: Salman Khan, Katrina Kaif, Sunil Grover

Rating: 2.5 out of 5 stars

UAE coins

Dh5 note

Dh10 note

Dh20 note

Engine: 4.0-litre, twin-turbocharged V8

Transmission: nine-speed automatic

Power: 630bhp

Torque: 900Nm

Price: Dh810,000

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

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

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

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)

• Engine: 3.9-litre twin-turbo V8
• Power: 640hp
• Torque: 760nm
• On sale: 2026
• Price: Not announced yet

Hussein Ibish: There are reasons for Democrats and Republicans to be happy

Rashmee Roshan Lall: Who are the women driving Joe Biden's success?

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

Champions League quarter-final, first leg

Ajax v Juventus, Wednesday, 11pm (UAE)

Match on BeIN Sports

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

• 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

Where each country stands

Bahrain approves use of Pfizer-BioNTech Covid vaccine

Abu Dhabi scraps 14-day quarantine for vaccinated airline passengers

At Everton Appearances: 77; Goals: 17

At Manchester United Appearances: 559; Goals: 253

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

UAE coins

Dh5 note

Dh10 note

Dh20 note

Starring: Josh Hartnett, Saleka Shyamalan, Ariel Donaghue

Director: M Night Shyamalan

Rating: 3/5

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.

US VP candidate Kamala Harris and the complexity of racial identity

Beirut blasts: What do we do with the world's ammonium nitrate?

How the pandemic is testing the solidarity of the European Union

When it comes to peace, is the EU really a great power?

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

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?

Our cities are getting too loud and those rising decibel levels are more than just a nuisance

How to make a noise complaint in the UAE

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

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

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

Canada should look past the US election outcome

There would be no Alphonso Davies without open borders

Hard-hit Canada is springing back to life – or to the already cliched 'new normal'

Favourite holiday destination: Thailand. I go every year and I’m obsessed with the fitness camps there.

Favourite book: Born to Run by Christopher McDougall. It’s an amazing story about barefoot running.

Favourite film: A League of their Own. I used to love watching it in my granny’s house when I was seven.

Personal motto: Believe it and you can achieve it.