The man who has identified himself as the creator of Bitcoin plans to provide further proof of his claim.
Craig Wright's spokesman told the BBC that the Australian would "move a coin from an early block" known to belong to the crypto-currency's inventor "in the coming days".
The entrepreneur announced he was behind the pseudonym Satoshi Nakamoto on Monday.
Critics have said that the evidence produced to date is unconvincing.
In a new blog - published after I first wrote this article - Dr Wright said it was right that the public was sceptical about his claims, but added that he would soon present "extraordinary" evidence to support his case.
"I will be posting a series of pieces that will lay the foundations for this extraordinary claim, which will include posting independently-verifiable documents and evidence addressing some of the false allegations that have been levelled, and transferring bitcoin from an early block," he wrote.
"For some there is no burden of proof high enough, no evidence that cannot be dismissed as fabrication or manipulation. This is the nature of belief and swimming against this current would be futile.
"I will present what I believe to be 'extraordinary proof' and ask only that it be independently validated. Ultimately, I can do no more than that."
You can read the strongest attack on Dr Wright in this post on Github, where his original post was described as "flimflam and hokum which stands up to a few minutes of cursory scrutiny, and demonstrates a competent sysadmin's level of familiarity with cryptographic tools, but ultimately demonstrates no non-public information about Satoshi."
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Media captionAustralian entrepreneur Craig Wright says he is Mr Bitcoin
Read more:
Has Craig Wright proved he is Satoshi?
Bitcoin industry 'sceptical' of Satoshi identity claim
Australian Craig Wright claims to be Bitcoin creator
The author goes on to speculate that Craig Wright "used amateur magician tactics to distract non-technical or non-expert staff of the BBC and the Economist during a stage-managed demonstration."
It's not completely unfair to describe me and Mark Ward - the other BBC reporter at the briefing - as non-technical or non-expert. Indeed, in yesterday's blog I said this: "What we saw seemed impressive - though it would need a far higher level of expertise than we possess to be certain."
But what I also said was that Jon Matonis - a senior director at the Bitcoin Foundation - was present at the briefing and actually talked us through the process being demonstrated by Craig Wright. He had told us earlier that he had first suspected Craig was Satoshi last year, after meeting him at a Bitcoin convention in Australia, and in recent weeks had spent a lot of time with him and seen evidence he found compelling.
We also knew that the Bitcoin Foundation's chief scientist Gavin Andresen, a respected figure I had interviewed a couple of years ago, was going to say that he believed Craig was Satoshi.
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Media captionBitcoin scientist Gavin Andresen believes Craig Wright's claim
On Monday morning, conspiracy theories began to spread that Andresen had been hacked and these were not his views. I explained to a few people that we'd soon know as he was due to speak at a New York conference, and a few hours later up he popped to say, no, he hadn't been hacked, and yes, he was convinced by Craig Wright.
The trouble is that Dr Wright's blog has not convinced the wider public.
He had told me last week that he intended it to be convoluted. He wanted to show those who doubted his intellectual capabilities that he really knew what he was talking about - instead he has managed to make them more suspicious.
This morning, I have managed to reach Jon Matonis, who is at a cryptocurrency event in Kenya. He remains absolutely convinced by Craig Wright but agrees that the blog hasn't helped his case.
"It needs to be amended because it's not conclusive for the general public. But that does not take away from what I saw in private," he explained.
As far as I can see it, if Dr Wright can move one of Satoshi's bitcoins - as promised - that should convince many of the doubters.
But don't expect everybody to be convinced.
Tuesday, 3 May 2016
Leicester City's Premier League win 'made mugs of all of us' - Scudamore
Leicester's unprecedented title triumph "made mugs of all of us", according to Premier League chief Richard Scudamore.
The 5,000-1 outsiders beat bigger rivals Tottenham, Arsenal, Manchester City, Manchester United and Chelsea to land their first top-flight title.
"It's probably the biggest sporting story ever and the biggest sporting achievement ever," Scudamore said.
"Nobody saw it coming and even when it was halfway through the season nobody said it could be sustained."
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How Lineker lived Leicester fairytale
Scudamore, who negotiated next season's record £5.1bn television rights deal, added in an interview with BBC Sport that "Leicester 2016" would stand as a landmark moment in British sport.
"We don't know what the future holds because we've all become completely hopeless at predicting anything, including the bookmakers and everybody else - because this one nobody saw coming," he said.
"It's made mugs of all of us and that is just the most fantastic feeling.
"If the bookmakers had it as a 5,000-1 event, you would imagine you should achieve these type of things once every 5,000 years. It gives us 10, 20, 30, 40, 50 years of being able to say: 'Leicester 2016. Just remember Leicester 2016.'"
Live - Reaction to Leicester winning the title
Live - City triumphant after Leicester title win
Relive Monday night's drama and the post-match celebrations
'Comparing apples with pears'
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Leicester City's comic book season
The Foxes were crowned Premier League champions on Monday, when nearest rivals Tottenham drew 2-2 at Chelsea.
It marked the culmination of an incredible run for the East Midlands club, who were only spared relegation last season thanks to a brilliant sequence of results over their final nine games.
"Of course, you can't compare it with other stories," said Scudamore. "You can't compare it with all Sir Alex Ferguson's achievements, you can't compare it with the Sergio Aguero moment, you can't compare it with the Arsenal unbeaten season because they're different things.
"You're comparing apples with pears. But in terms of an overall story, as an overall achievement, it is absolutely the best."
Ferguson won the Premier League 13 times while managing Manchester United, Aguero scored a stoppage-time winner as Manchester City took the title in 2012 while Arsenal were unbeaten in the 2003-04 top-flight season.
"No matter what else happens we've got it to remember, we've got it in the record books," said Scudamore. "Let the statisticians prove that Leicester won the most points, they won the league, they were worthy champions and anybody else can do it."
'Leicester 2016' an opportunity for the Premier League?
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Leicester's Claudio Ranieri: His most memorable quotes
Leicester's triumph will mean English football is an even more successful global product, says Sheffield Hallam football finance expert Rob Wilson.
The triumph against the odds is a "great advert" for England's top flight, said Wilson.
He added it "creates huge potential to leverage the Premier League even more".
Leicester City win the Premier League: How the world viewed the victory
Leicester are set to make £150m next season from prize money, Champions League participation cash, and increased match-day revenues from ticket and hospitality sales.
The Foxes have spent just £57m on their squad - compared with the £320m Manchester United have spent on player transfers in the past three seasons.
Wilson said the story of Leicester, owned by Thai billionaire businessman Vichai Srivaddhanaprabha, would increase the Premier League's popularity in South East Asia.
Scudamore added: "I think this will be very good for us around the world. When you look at other European leagues and who's likely to win those leagues, nothing like this really happens elsewhere. The Premier League is a great British export."
Top 10 next season - Ranieri
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Leicester City champions: Claudio Ranieri's reaction to Premier League title win
Manager Claudio Ranieri said the club would "continue to build" next season.
Speaking from Leicester's training ground, where the players were also gathered following a late-night celebration at striker Jamie Vardy's house, the Italian was asked if his side could win the league again next year.
"No. Next season we have to fight for 10th position," said the Italian. "We have to make sure we are safe then we look to something more.
"When I came here the objective was to create a solid foundation and build together," Ranieri told Sky Sports. "This season is out of our project but our foundations are very solid and we want to do our best.
"We don't want to sell anybody. If some player doesn't want to stay with us, I don't want unhappy people. We are looking to add to the team but with the same mentality. Who comes must know we are working hard."
Wilson told BBC Radio 5 live: "In August they had absolutely no superstars in that side. This summer is arguably more challenging as they try to hold on to some of those players and renew some of those contracts to maintain this next year."
More on this story
Leicester win Premier League title
The greatest sporting story of all time?
From rejects to Premier League champions
Leicester 'can make £150m from title'
360 video: Fans celebrate title-winning moment
23 players and £57m squad - so how did Leicester win the title?
Listen - One fan's story, told by Barry Davies
What else is happening?
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BBC Football Daily: Leicester win Premier League - How football reacted
Both Conservative Prime Minister David Cameron and Labour leader Jeremy Corbyn tweeted their congratulations.
Sir Peter Soulsby, the mayor of Leicester, said there had been suggestions to name streets after Ranieri and to build a statue in his honour, but added: "I don't know what it will be. I do know we've got quite a lot of partying ahead of us as a city to the end of the season. And then a big celebration.
"We've had media attention across the world already and now that we are champions, I think I'm expecting a little more."
Cleaners took to the streets of Leicester at 06:00 BST to sweep up after the revelry, after thousands of people spilled out on to the streets in celebration.
There was even a crowd of people celebrating outside Vardy's house.
The celebrations continued on Tuesday, with fans gathering to catch sight of the players as they were treated to a meal by the club's owner - who had earlier flown in by helicopter to congratulate them.
About 60 to 70 players and staff enjoyed a two-and-a-half-hour lunch at San Carlo pizzeria in the city centre.
Claudio Ranieri
Claudio Ranieri and his players were treated to lunch by club owner Vichai Srivaddhanaprabha
On the way to the restaurant the team bus even stopped to pick up a Jamie Vardy lookalike, who was celebrating the title win outside the King Power Stadium.
Postal worker Lee Chapman, 29, told BBC Radio 5 live: "The bus pulled up and they were all banging on the windows and I got dragged on!
"Jamie Vardy said 'you're not as good looking as me'. It's absolutely bonkers."
Lee Chapman
Lee Chapman (centre right) with Jamie Vardy
US Navy Seal killed in Iraq as IS breaches Peshmerga lines
A US Navy Seal who was advising Kurdish Peshmerga forces in northern Iraq has been killed by Islamic State (IS) militants, US defence officials say.
The special warfare operator, who has not been named, died as a result of a gunshot wound, the Navy Times reported.
Peshmerga officials said the militants breached the frontline north of the IS-held city of Mosul on Tuesday morning.
The American was the third to be killed in combat since the US-led coalition campaign against IS began in 2014.
Although Iraqi pro-government forces have gradually pushed back IS since then with the help of US-led coalition air strikes and military advisers, the jihadist group still controls large parts of the country's north and west.
IS offensive
The Navy Seal's death was announced by US Defence Secretary Ashton Carter, who said only that a serviceman had died as a result of enemy fire near Irbil, the capital of Iraq's Kurdistan Region.
Map showing Islamic State control of Iraq and Syria
"It is a combat death, of course, and a very sad loss," he told reporters in Germany.
A US military official in Iraq subsequently said he was killed by "direct fire" at a Peshmerga position about 3 to 5km (2-3 miles) behind the frontline after it was penetrated by IS militants.
A Peshmerga spokesman, Maj Gen Jaber Yawer, told the Associated Press that the American was shot dead by an IS sniper near the town of Tal Asqof, about 28km (17 miles) from Mosul.
IS militants overran the town at dawn on Tuesday in an assault that involved a number of truck bombs, but were driven out later in the day by Peshmerga fighters.
The attack on Tal Asqof was part of a major offensive launched by IS militants in northern Iraq, which the group said involved "remotely-guided car bombs".
Burned-out Humvee military vehicle in Makhmour area, Iraq, recaptured by Peshmerga forces from Islamic State militants (17 April 2016)Image copyrightReuters
Image caption
Peshmerga forces have gradually driven IS militants out of areas they captured in 2014
An Iraqi military source told the BBC that special forces had foiled an attack by five suicide bombers in the village of Khirbirdan, south of Mosul.
A Peshmerga source said an attack on Wardak, east of Mosul, was also repelled.
Additional advisers
There are more than 5,500 US military personnel in Iraq. Some 3,870 are deployed to advise and assist local forces fighting IS militants.
The remainder includes special operations personnel, logistics workers and troops on temporary rotations.
Last month, the US announced that it planned to send 200 additional advisers to Iraq by the end of the year and deploy them closer to the frontlines so that they could assist in the operation to retake Mosul.
In March, US Marine Staff Sgt Louis Cardin was killed in a rocket attack by IS while providing force protection fire support at a coalition firebase near Makhmour, south-west of Mosul, that had only become operational a few days earlier.
US Army Master Sgt Joshua Wheeler died in October during a special forces mission to rescue hostages held at an IS prison near Hawija, west of Kirkuk.
US election 2016: Trump-Cruz row precedes Indiana primary
Republican presidential hopeful Ted Cruz has warned that America would "plunge into an abyss" if it elected Donald Trump.
He spoke after Mr Trump suggested Mr Cruz's father was connected to the man who killed President John F Kennedy.
The New York tycoon is poised to deliver a crushing blow to Mr Cruz as Indiana votes in the latest primary.
Mr Cruz's advisers had targeted Indiana as the senator's best hope of halting Mr Trump's march to the nomination.
However, polls show Mr Trump with a sizeable lead in the mid-western state.
Mr Cruz attacked Mr Trump on Tuesday, calling the billionaire businessman "totally amoral," "a pathological liar" and "a serial philanderer".
Responding, Mr Trump said "Ted Cruz is a desperate candidate trying to save his failing campaign.
"It is no surprise he has resorted to his usual tactics of over-the-top rhetoric that nobody believes."
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Media captionIndiana primary voters head to the polls: so what's at stake?
Mr Cruz and fellow candidate John Kasich are hoping to force a contested convention where party officials, not voters, choose the nominee.
If Mr Trump wins Indiana, the New York businessman will likely reach the required 1,237 delegates to secure the nomination and avoid such a scenario.
Meanwhile in the Democratic battle, polls show Hillary Clinton and Bernie Sanders locked in a tight race in Indiana.
However, a Sanders win in Indiana would do little to erase Mrs Clinton's commanding lead.
The Clinton campaign has shifted its focus to other states, opting not to actively campaign or spend money in Indiana.
Mr Trump told supporters on Monday that he is eager turn his attention to the general election.
"You know if we win it's over, and then I can focus," he said at a campaign rally in the state.
Mr Cruz cannot get enough delegates to win the nomination outright, but hopes he can still deprive Mr Trump of a majority.
He has thrown considerable resources into the state in recent days.
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Ted Cruz campaigning in Indiana - 2 MayImage copyrightAP
Image caption
Mr Cruz is hoping to stop Mr Trump in his tracks in Indiana
At the scene: Anthony Zurcher, BBC North America reporter
Ted Cruz's father is tied to the Kennedy assassination. Donald Trump is a pathological liar, a narcissist and a serial philanderer. Mr Cruz is unhinged and desperate.
That is just a taste of the accusations that have been flying between the two top Republican presidential hopefuls on the day primary voters in Indiana head to the polls.
If recent opinion surveys are any indication, Mr Trump is poised to deliver a mortal blow to the Cruz campaign in a state the Texan had once described as "favourable terrain". Mr Cruz has thrown everything he can at his opponent - brokering a deal to clear out rival candidate John Kasich, breaking with tradition and naming his vice-presidential running mate early, even engaging Trump supporters in a street-side debate. None of it has worked.
Mr Cruz ran an efficient, tactically sound campaign that allowed him to survive long after most of his competitors had faltered. But now, facing Mr Trump in a head-to-head showdown with everything at stake, his best efforts may prove to be far from enough.
Is Indiana Ted Cruz's last stand?
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"Indiana is in a position to decide the direction of this race, not just for Indiana, not just for the Republican Party, but for the entire country," he told supporters in the state.
"I think... the country is depending on Indiana to pull us back from this cliff."
The third Republican candidate, Mr Kasich, is no longer campaigning in Indiana.
He and Mr Cruz reached a deal last month to coordinate their strategies against Mr Trump, a move which prompted Mr Trump to label them "desperate".
Mohammad Abu Khdair murder: Israeli ringleader jailed for life
The Israeli ringleader in the killing of a Palestinian teenager who was abducted and burned to death in 2014 has been sentenced to life in prison.
Yosef Haim Ben David, 31, was convicted of murdering Mohammad Abu Khdair, 16, after judges rejected an insanity plea.
Two Israeli youths have also been jailed for their roles in the killing.
Khdair was killed in revenge for the murders of three Israeli teens in the West Bank in a cycle of violence that led to a 50-day war in the Gaza Strip.
His body was discovered in a forest in West Jerusalem on 2 July 2014, two days after the bodies of the Israelis abducted and murdered by Hamas militants that June were found.
The story of two brutal killings
Interview with Mohammad Abu Khdair's mother
The Jerusalem District Court handed Ben David a life sentence plus 20 years for other crimes on Tuesday, and ordered him to pay 150,000 shekels ($40,000; £27,000) to the victim's family.
Mohammad Abu Khdair
Image caption
Mohammad Abu Khdair was abducted and murdered in Jerusalem
Hussein Abu Khdair, the Palestinian teen's father, said he wanted to "see him die in prison", according to the Associated Press news agency.
Earlier, Ben David had told the court that he wanted to apologise.
"I am sorry for the family. This is not me. I wasn't in control," he said.
The court found in November that Ben David had led the kidnapping and murder of Mohammed Abu Khdair, but postponed a verdict after his lawyer submitted a psychiatric opinion stating his client had not been responsible for his actions.
In April, the court formally rejected Ben David's insanity plea and found him guilty.
Jerusalem map showing locations of kidnapping and where body found
His accomplices, who were aged 17 and 16 at the time of the killing, were jailed for life and 21 years in prison respectively in February.
The three abducted Mohammad Abu Khdair at random as he stood on a road in the Shufat district of East Jerusalem.
The two youths then beat the Palestinian unconscious in the back of a car being driven by Ben David.
One of the minors helped douse Mohammad Abu Khdair with petrol while he was still alive, before Ben David lit a match and set him on fire.
During the attack, Ben David called out the names of Israelis murdered by Palestinians, including the three Israeli teenagers - Naftali Fraenkel and Gilad Shaar, both aged 16, and 19-year-old Eyal Yifrach - earlier abducted and killed in the occupied West Bank.
Two Palestinians suspected of their murders were killed by Israeli forces in a gunbattle in Hebron in September 2014. A third man, Hussam Qawasmeh, was sentenced to three life terms in prison in connection with their murders.
German couple tortured two women to death, police say
Police in Germany investigating the deaths of two women say they were the victims of a couple who held them hostage and tortured them.
They say a man and his ex-wife placed dating advertisements to lure the women to their home.
The suspects - Wilfried W, 46, and Angelika B, 47 - were arrested last Wednesday and charged with manslaughter.
The man denies any wrongdoing but his partner is reported to have confessed.
Wilfried W's Facebook pictureImage copyrightFacebook picture
Image caption
Wilfried W is said to have placed ads in newspapers to lure women
Detectives believe there may be further victims and are searching the couple's home in Hoexter, north-western Germany.
The first case
Police have for weeks been investigating the death of a 41-year-old woman, known as Susanne F, who they believe was held hostage and tortured in the couple's residence.
That case came to light when the couple allegedly tried to drive the badly injured woman to her home in Lower Saxony in April.
But their car broke down and as they waited for a taxi, the woman's health deteriorated.
They called an ambulance, but the woman died later in hospital, where suspicions about her injuries arose and the police were warned.
'Serious physical torture'
At a news conference on Tuesday, police said they now believed the couple had killed and dismembered another young woman before disposing of her remains in their fireplace.
Annika W, 33, also from Lower Saxony, died in August 2014. Like Suzanne F, she had responded to a dating advertisement in late 2013.
"The victim suffered again and again from very serious physical torture like being hit all over the body, chained to heaters, being enslaved and beaten," chief prosecutor Ralf Meyer told a news conference.
"Sometimes the victim had to sleep on the bare floor of cold rooms. Hence, her physical condition became worse and worse."
He said that in summer 2014, the victim reached a life-threatening state, as a consequence of which she died on 1 August, 2014.
The residence of the suspects is surrounded by a police fence during sunset on 2 May, 2016 in Bosseborn village near Hoexter, Germany.Image copyrightGetty Images
Image caption
Police are investigating claims that a third woman may have died in the house in Hoexter
Police believe the motive for the murders was more likely to be power-related than sexual.
Angelika B is reported to have made a full confession, arguing that she only obeyed the man after also being tortured by him. Further investigations are said to support her statement.
The head of the investigation, Ralf Oestermann, said officers were conducting a detailed forensic examination of the house.
"We cannot totally exclude the possibly that another woman died there," he told reporters.
The full names of those involved in the case have not been released inline with German privacy laws.
US accuses Russia of nuclear sabre-rattling, amid Nato tensions
US Defence Secretary Ash Carter has accused Russia of "nuclear sabre-rattling" and of being intent on eroding international order.
He said he regretted strained relations with Moscow but said the US had to "prioritise deterrence" on Nato's eastern flank.
US-Russian ties have been strained by the Ukraine crisis and recent military encounters in the Baltic Sea.
Russia has accused Nato of threatening its national security.
Speaking during a ceremony at the US European Command Headquarters in Germany, Mr Carter said Russia was "going backwards in time".
But Mr Carter said: "We do not seek a cold, let alone a hot war with Russia."
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Nuclear threats: Analysis by Jonathan Marcus, BBC defence correspondent
Mr Carter's warning about Russia's nuclear sabre-rattling is a measure of how poor relations are between Nato and Moscow.
At root is Russia's annexation of the Crimea and its military operations in eastern Ukraine. But Moscow sees Nato's response - a whole series of reinforced exercises in Poland and the Baltic republics along with additional US armour stock-piled in Europe - as yet another expansion of the alliance's activities towards its own borders.
Russia has explicitly warned Denmark that its warships could become the target of nuclear strikes if it joins Nato's ballistic missile defence system and similar threats have been made to Norway and Poland.
Russia is significantly modernising its nuclear arsenal. It has also deployed Iskander-M nuclear capable missiles to its Kaliningrad enclave. This, along with increasingly aggressive Russian air patrols, is only encouraging Nato to enhance its own deterrent capability.
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"We do not seek to make Russia an enemy. But make no mistake, we will defend our allies, the rules-based international order, and the positive future it affords us."
He added: "Moscow's nuclear sabre-rattling raises troubling questions about Russia's leaders' commitment to strategic stability, their respect for norms against the use of nuclear weapons, and whether they respect the profound caution that nuclear-age leaders showed with regard to brandishing nuclear weapons."
Mr Carter outlined plans to deploy a third US Army combat brigade in Europe in the coming year.
He said it was part of a $3.4bn (£2.3bn) initiative to reassure Nato allies of US commitment to their security and to deter Russian aggression.
"We haven't had to prioritise deterrence on Nato's eastern flank for the past 25 years, but while I wish it were otherwise, now we have to," he said.
Soldiers watch US, UK and Italian paratroopers during training jump as part of Saber Junction 16 military exercises near Hohenfels Training Area near Grafenwoehr, Germany. 12 April 2016Image copyrightGetty Images
Image caption
The US says it is to deploy more troops to Europe to work alongside Nato allies
Relations between Russia and the West deteriorated after Russia annexed Ukraine's Crimea region in 2014.
Ukraine and the West have accused Russia of covertly backing pro-Russian rebels who now control much of eastern Ukraine. Russia strongly denies the claims.
Last week, the US accused a Russian jet fighter of aggressively intercepting a US Air Force reconnaissance plane over the Baltic Sea. It said the Russian jet had performed a barrel roll.
Earlier last month, two Russian planes flew close to a US guided missile destroyer almost a dozen times in the Baltic.
Russia's envoy to Nato said the destroyer had sailed close to the Russian enclave of Kaliningrad in an attempt "to exercise military pressure on Russia".
Correspondents say such encounters have raised fears of a full-on confrontation, be it deliberate or accidental, between the world's two great military powers.
