Mr Delo said he was making the donation to create "a level playing field" with other parties and ensure that Reform is given a "fair fight" at the polls in the next general election.
The donation makes him Reform's largest donor ahead of fellow crypto entrepreneur Christopher Harborne, who donated £9m to the party in August.
Writing in the Daily Telegraph, Mr Delo said: "Unlike the people who express mock concern for the health of 'our democracy' while doing everything they can to keep it as a cartel, I want a fair fight and a level playing field.
"My conclusion from Reform's recent troubles is that they should spend less time trying to raise funds to compete on equal terms and more time preparing for government."
Party leader Nigel Farage welcomed the donation, saying he is "honoured and humbled" at Mr Delo's support.
"Ben knows that we are the only party that can turn the country around and reverse Britain's decline," he added.
Mr Delo, who co-founded the cryptocurrency trading platform BitMEX, was convicted in the US of a Bank Secrecy Act violation, before being pardoned by President Donald Trump.
The Daily Telegraph reports the £36m figure represents £1m a month between now and the latest possible date of the next general election in 2029, but Mr Delo made the payment upfront to avoid attempts to block it.
MPs last week backed measures on political donations including a cap on overseas donations at £100,000 and a suspension of funding through cryptocurrency, but the draft legislation still needs to be passed by the House of Lords.
They argue the changes will prevent foreign money from influencing elections, but Reform says it's a bid to choke its funding.
The donations come as the party faces questions over its finances, including an undercover investigation by Channel 4, which showed senior figures within the party appearing to discuss how to disguise donations from foreign backers.
Reform has denied any wrongdoing and says it will fully co-operate with the Metropolitan Police during its investigation.
Mr Farage's long-term aide Dan Jukes and head of policy James Orr have been suspended from the party pending an internal probe into the allegations, which overshadowed their annual conference last week.
In addition, the parliamentary standards watchdog is also looking into a £5m donation from Mr Harborne, but Mr Farage has said he has done nothing wrong, and the gift was not political.
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A Labour spokesperson says the questions around Reform's finances are "piling up", adding that Mr Farage is "still up to his neck in scandal".
"Reform UK can't buy their way out of questions about sleaze, criminal mates and dodgy finances.
"It's time Farage and Reform finally came clean with the public, co-operated fully with the police, and proved they're not just in it for themselves."
Liberal Democrat Cabinet Office spokesperson Lisa Smart added: "Nigel Farage wants to bring Trump's America to our shores by buying his way into power. He's trying to get into Number 10 as if it's a stop on a monopoly board.
"It can't go on like this. Andy Burnham needs to introduce a cap on political donations. Our democracy depends on it."
Hampshire Police said Del Leon Somerville, from the Paulsgrove area of the city, was arrested on Friday morning and has been charged with violent disorder and assaulting a police constable in the execution of their duty.
The force said a "small number" of police officers were injured and vehicles damaged during an anti-migrant protest in Portsmouth on Sunday as demonstrators clashed with police after an RNLI boat carrying more than 100 migrants arrived in the city.
They blocked roads leading to the port for hours and vowed to stay all night, with around 200 people being dispersed at around 4am on Monday morning.
The incident was the second major anti-migrant protest in two days, following a similar demonstration in Dover on Saturday, when crowds of masked men blocked road access to the Port of Dover.
On Friday the force also announced that officers will use new powers banning face coverings at another anti-migrant protest planned for Portsmouth this weekend. It means mask-wearers could be arrested in the area designated by the order.
Hampshire Police said it will use this new tactic under the Crime and Policing Act to "allow peaceful protest and prevent violence".
Assistant Chief Constable Paul Bartolomeo, of Hampshire and Isle of Wight Constabulary, said: "Where a minority of people try to take advantage of the situation to cause violence and disruption, it is right that we use all our policing powers robustly to protect the local community as well as the right of others to peaceful protest.
"We have listened to the concerns of our communities and know how intimidated they feel when they see masked groups descend on their neighbourhoods.
"This is why we are making use of these new policing powers, to ensure we have every tactic at our disposal, should we need it."
Groups from South Coast Patriots have called for a peaceful march in Portsmouth city centre on Saturday afternoon, while Stand up to Racism will host a counter protest march.
Daniel Thomas, known as Danny Tommo, the leader of Patriot Platform behind the Portsmouth and Dover protests last weekend, said in a statement that "no organiser, representative, or affiliate of Patriot Platform will attend, speak at, steward, or take part" in the event.
Somerville is expected to appear at Portsmouth Magistrates' Court on Saturday after being arrested during the protests last weekend.
Assistant Chief Constable Tony Rowlinson said his arrest is the "first of what we fully anticipate to be a number of arrests" and hoped it would send a "clear warning" to those planning future disruption and disorder.
He went on to say that "violence and criminal damage have no part in peaceful protest" and that police would "investigate incidents like this thoroughly and take robust action against those responsible".
"Clearly events on Sunday evening were not peaceful protest, rather violent public disorder, and this will not be tolerated," he added.
The constable explained that it is not always possible to arrest suspects at the time of public order policing, particularly when there is a need to review evidence to identify those involved.
Hampshire Police said since the incident, detectives have been reviewing hundreds of hours of footage to identify offences that were committed and so far 75% of the footage has been assessed.
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Home Secretary Shabana Mahmood met police bosses on Thursday to get reassurance they were ready to move quickly in dealing with far-right groups seeking to intimidate communities following last weekend's events.
How Sunday's protest unfolded
Eight boats carrying a total of 625 people crossed the Channel on Sunday, according to Home Office data.
The boat that arrived in Portsmouth left from the Jobourg region of Normandy and reportedly had about 140 people on board.
The boat was met in the Channel by two RNLI boats, who took the migrants to Eastney harbour in Portsmouth, after requests to land at other ports were refused.
Demonstrators clashed with police after the boat carrying migrants arrived in the city before being dispersed.
Following the incident, the RNLI has advised its staff and volunteers to choose carefully when to wear its uniform after what it described as "unacceptable abuse".
Typically at this time of year, there would have been three hurricanes and eight tropical storms forming out to sea and churning towards the US coastline.
But so far there have just been five storms - Arthur, Bertha, Cristobal, Dolly and Edouard - and no hurricanes at all.
None of the storms have reached hurricane strength, making this season record-breaking, Sky News' weather producer Joanna Robinson says.
September is the peak of the Atlantic hurricane season, which runs from 1 June to 30 November.
In the satellite era, the latest first Atlantic hurricane formed on 11 September, a record set in both 2002 and 2013.
The National Hurricane Centre says no storms are expected over the next seven days.
A quieter season was forecast due to the 'historic' El Nino event taking place in the Pacific.
In the Atlantic, El Nino increases wind shear - changes in wind speed and direction with height - which can disrupt thunderstorms before they develop into tropical storms or hurricanes.
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Dry, dusty air across the region is also limiting storm formation.
In contrast, El Nino has likely helped boost hurricane activity in the Eastern Pacific.
The basin has recorded 14 tropical storms, five of which became hurricanes, including three major hurricanes of category 3 or higher.
Last week, hurricanes Lowell, Karina and Marie were all active at the same time across the central and east Pacific.
Hurricane Lowell caused significant impacts across Hawaii's western islands.
The train left the tracks between Rouen and Caen in northern France, the transport minister Philippe Tabarot said.
The train was carrying 180 passengers and went off the rails near to the town of Cleon in Normandy, added Tabarot in a post on X on Friday evening.
According to local media, an 18-year-old woman is in critical condition while 43 passengers reportedly sustained minor injuries.
She was airlifted by helicopter to Rouen University Hospital, while uninjured passengers were taken to Cleon Town Hall.
One carriage overturned and four carriages derailed around 7.30pm local time, French TV station BFMTV reported.
Minister Tabarot added 140 firefighters had been deployed to the scene to provide assistance.
The train derailed after hitting an unidentified object, a spokesperson for the French police said.
The French railway operator, SNCF, said that an investigation to identify the cause of the accident was underway.
The local authority, the prefecture of Seine-Maritime, advised the public to avoid the area.
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There are 140 firefighters at the scene to help the injured and the passengers, the transport minister added.
A woman quoted by a local media outlet reported broken windows and people being injured by shards of glass and objects on board.
The public prosecutor's office is reported to have launched an investigation to determine the cause of the accident.
The small red urn is wrapped in purple and white artificial flowers and held in the arms of a teddy bear.
It is believed to have been left on an LNER service travelling from London King's Cross to Aberdeen and was subsequently handed into lost property on the train's arrival in Scotland.
British Transport Police (BTP) said that according to the information they have available, it was lost at some point in the last four months.
PC Gary Herning said: "The urn appears to contain human ashes or remains and will clearly be of enormous sentimental value to someone.
"Unfortunately, we have no further information on where the owner may have boarded or alighted during the journey.
"We're issuing the appeal in the hope that the individual or family concerned will reach out to us so that we can arrange its safe return."