There is evidence that Tether, a digital currency pegged to the US dollar, may have been used to manipulate the price of Bitcoin and other cryptocurrencies, according to a research paper released by the University of Texas on Wednesday.
"Tether seems to be used both to stabilise and manipulate Bitcoin prices," said the paper's co-authors, professor John Griffin and doctoral student Amin Shams.
Critics of tether have raised concerns over the past year about whether Tether Limited actually holds US$1 (Dh3.67) in reserve for each tether issued, as it claims. More than $2.2 billion of Tether was issued between March 2017 and January 2018, according to the paper.
Regulators worldwide are increasing their scrutiny of cryptocurrency markets. The Commodity Futures Trading Commission and the US Department of Justice have been investigating whether Bitcoin and other cryptocurrency prices are being manipulated, Bloomberg reported last month.
In December, the CFTC sent subpoenas to Tether and Bitfinex, a popular cryptocurrency exchange that is affiliated with, and shares executives with, Tether. The reason for the subpoena was unclear.
Bitfinex denied that Tether issuances could be used to manipulate Bitcoin.
"[Neither] Bitfinex nor Tether is, or has ever, engaged in any sort of market or price manipulation," Bitfinex and Tether chief executive J L van der Velde said.
Bitcoin soared last year, peaking at nearly $20,000 in December, before the price collapsed. It was at $6,624.45 on Wednesday afternoon.
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The researchers found that Tether issuances rose last year during periods when the price of Bitcoin was dropping. When Bitcoin was rising, the same pattern could not be found.
Once issued, nearly all Tether was moved to Bitfinex and then shifted to other exchanges, where it was used to buy Bitcoin, propping up the price, the paper said.
The researchers used algorithms to analyse data from blockchains, the decentralised ledgers that underpin Bitcoin and other virtual currencies, between the beginning of March 2017 to the end of March 2018.
The periods with the largest flow of Tether accounted for 87 hours, or less than 1 per cent, of the data, but were associated with 50 per cent of Bitcoin's compounded return, and 64 per cent of the returns on six other large cryptocurrencies.
The researchers then did 10,000 simulations looking in each case at 87 random hours from the data and were unable to find similar results.
"Overall, our findings provide substantial support for the view that price manipulation may be behind substantial distortive effects in cryptocurrencies," they said.
ARGENTINA SQUAD
Goalkeepers: Franco Armani, Agustin Marchesin, Esteban Andrada
Defenders: Juan Foyth, Nicolas Otamendi, German Pezzella, Nicolas Tagliafico, Ramiro Funes Mori, Renzo Saravia, Marcos Acuna, Milton Casco
Midfielders: Leandro Paredes, Guido Rodriguez, Giovani Lo Celso, Exequiel Palacios, Roberto Pereyra, Rodrigo De Paul, Angel Di Maria
Forwards: Lionel Messi, Sergio Aguero, Lautaro Martinez, Paulo Dybala, Matias Suarez
How to protect yourself when air quality drops
Install an air filter in your home.
Close your windows and turn on the AC.
Shower or bath after being outside.
Wear a face mask.
Stay indoors when conditions are particularly poor.
If driving, turn your engine off when stationary.
Cryopreservation: A timeline
- Keyhole surgery under general anaesthetic
- Ovarian tissue surgically removed
- Tissue processed in a high-tech facility
- Tissue re-implanted at a time of the patient’s choosing
- Full hormone production regained within 4-6 months
The Sand Castle
Director: Matty Brown
Stars: Nadine Labaki, Ziad Bakri, Zain Al Rafeea, Riman Al Rafeea
Rating: 2.5/5
Getting there
Flydubai flies direct from Dubai to Tbilisi from Dh1,025 return including taxes
Leaderboard
63 - Mike Lorenzo-Vera (FRA)
64 - Rory McIlroy (NIR)
66 - Jon Rahm (ESP)
67 - Tom Lewis (ENG), Tommy Fleetwood (ENG)
68 - Rafael Cabrera-Bello (ESP), Marcus Kinhult (SWE)
69 - Justin Rose (ENG), Thomas Detry (BEL), Francesco Molinari (ITA), Danny Willett (ENG), Li Haotong (CHN), Matthias Schwab (AUT)
COMPANY PROFILE
Name: Almnssa
Started: August 2020
Founder: Areej Selmi
Based: Gaza
Sectors: Internet, e-commerce
Investments: Grants/private funding
Where to Find Me by Alba Arikha
Alma Books
Vidaamuyarchi
Director: Magizh Thirumeni
Stars: Ajith Kumar, Arjun Sarja, Trisha Krishnan, Regina Cassandra
Rating: 4/5
The specs
Engine: 3.0-litre six-cylinder turbo
Power: 398hp from 5,250rpm
Torque: 580Nm at 1,900-4,800rpm
Transmission: Eight-speed auto
Fuel economy, combined: 6.5L/100km
On sale: December
Price: From Dh330,000 (estimate)
Formula Middle East Calendar (Formula Regional and Formula 4)
Round 1: January 17-19, Yas Marina Circuit – Abu Dhabi
Round 2: January 22-23, Yas Marina Circuit – Abu Dhabi
Round 3: February 7-9, Dubai Autodrome – Dubai
Round 4: February 14-16, Yas Marina Circuit – Abu Dhabi
Round 5: February 25-27, Jeddah Corniche Circuit – Saudi Arabia
Singham Again
Director: Rohit Shetty
Stars: Ajay Devgn, Kareena Kapoor Khan, Ranveer Singh, Akshay Kumar, Tiger Shroff, Deepika Padukone
Rating: 3/5
Moon Music
Artist: Coldplay
Label: Parlophone/Atlantic
Number of tracks: 10
Rating: 3/5
The specs
Engine: Direct injection 4-cylinder 1.4-litre
Power: 150hp
Torque: 250Nm
Price: From Dh139,000
On sale: Now
Other workplace saving schemes
- The UAE government announced a retirement savings plan for private and free zone sector employees in 2023.
- Dubai’s savings retirement scheme for foreign employees working in the emirate’s government and public sector came into effect in 2022.
- National Bonds unveiled a Golden Pension Scheme in 2022 to help private-sector foreign employees with their financial planning.
- In April 2021, Hayah Insurance unveiled a workplace savings plan to help UAE employees save for their retirement.
- Lunate, an Abu Dhabi-based investment manager, has launched a fund that will allow UAE private companies to offer employees investment returns on end-of-service benefits.
Emergency
Director: Kangana Ranaut
Stars: Kangana Ranaut, Anupam Kher, Shreyas Talpade, Milind Soman, Mahima Chaudhry
Rating: 2/5
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German intelligence warnings
- 2002: "Hezbollah supporters feared becoming a target of security services because of the effects of [9/11] ... discussions on Hezbollah policy moved from mosques into smaller circles in private homes." Supporters in Germany: 800
- 2013: "Financial and logistical support from Germany for Hezbollah in Lebanon supports the armed struggle against Israel ... Hezbollah supporters in Germany hold back from actions that would gain publicity." Supporters in Germany: 950
- 2023: "It must be reckoned with that Hezbollah will continue to plan terrorist actions outside the Middle East against Israel or Israeli interests." Supporters in Germany: 1,250
Source: Federal Office for the Protection of the Constitution