Pictures of the week: From an Icelandic volcano to robotic surgery in China

Kareem Shaheen: Lebanon is being forced to relive its traumas

Michael Young: Hezbollah is losing its ability to intimidate anyone

Raghida Dergham: Lebanon-Israel talks will mark another win for Donald Trump

Directors: Raj & DK

Stars: Varun Dhawan, Samantha Ruth Prabhu, Kashvi Majmundar, Kay Kay Menon

Rating: 4/5

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.

• As per the document, there are six filing options, including choosing to report on a realisation basis and transitional rules for pre-tax period gains or losses. 
• SMEs with revenue below Dh3 million per annum can opt for transitional relief until 2026, treating them as having no taxable income. 
• Larger entities have specific provisions for asset and liability movements, business restructuring, and handling foreign permanent establishments.

Engine: 1.5-litre 4-cylinder petrol

Power: 154bhp

Torque: 250Nm

Transmission: 7-speed automatic with 8-speed sports option 

Price: From Dh79,600

On sale: Now

  Engine: 2-litre or 3-litre 4Motion all-wheel-drive Power: 250Nm (2-litre); 340 (3-litre) Torque: 450Nm Transmission: 8-speed automatic Starting price: From Dh212,000 On sale: Now

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

Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'

Engine: 6.75-litre twin-turbocharged V12 petrol engine 

Director: Alfonso Cuaron 

Stars: Cate Blanchett, Kevin Kline, Lesley Manville 

Rating: 4/5

Name: Hassan Mohsen Elhais

Position: legal consultant with Al Rowaad Advocates and Legal Consultants.

Favourite colour: Brown

Favourite Movie: Resident Evil

Hobbies: Painting, Cooking, Imitating Voices

Favourite food: Pizza

Trivia: Was the voice of three characters in the Emirati animation, Shaabiyat Al Cartoon