The contract will see the Mexican middleweight earn a staggering $365 million minimum over the course of 11 fights over the next five years.
Its early success across Europe and Asia was followed by launches in Canada (2017), Italy (2018) and the United States (2018), where DAZN announced blockbuster deals with Matchroom Boxing and Bellator MMA to deliver a stacked slate of fight sports content upon entry into the market.
"We are thrilled to be exclusive partners with Golden Boy Promotions and Oscar De La Hoya", added John Skipper, executive chairman of DAZN Group.
Promoter De La Hoya told ESPN: "Canelo is the highest-paid athlete in the world".
While it would eclipse the 13-year, $325m (then £208m) contract baseball's Giancarlo Stanton signed in 2014, when broken down on an annual basis he will earn less than the likes of Barcelona footballer Lionel Messi, who has an annual salary of $84m (£64m) according to Forbes. He is now with the New York Yankees.
Canelo has only ever lost to Floyd Mayweather and he will be a hot favourite to get the better of Fielding, but the fighter from Liverpool will have some advantages on the night. DAZN is charging its subscribers $9.99 per month, which - over time - translates to substantially less than the $85 pay-per-views to which boxing fans have become accustomed.
"This is only from my hard work", Alvarez told ESPN. "The most important thing to me was being able to give the fans the opportunity to see me fight without having to pay the $70 or $80 for my fights on pay-per-view. It's very important. We have something pending there, so let's make the second fight".
"It is very important for me to give the fans the biggest fights and the most important fights, and I promise you I will always do that". I am moving up in weight and I don't know how my body will feel. "DAZN has the flawless platform to make this dream come true, and with the biggest star in the sport at the helm of this journey, I have no doubts that we will succeed in unimaginable ways".
"He is not the biggest at middleweight and he is stepping up to super middleweight, where I have been for a while", he said.
Golovkin, who was also with HBO, has not agreed a deal with a new US TV network yet and his move could signal how likely he is to have a third fight with Alvarez in the near future.