Golden Book

About Golden Book

By 2026, the technology had already been tested across several seasons of top-level competitions including the Premier League and Champions League. AI now trades more than 70% of bets across Kambi’s network, including all football and tennis.

The 2026 World Cup was therefore the culmination of five years of development that had embedded AI throughout Kambi’s trading operations.

“In simple terms, what we have undertaken is a shift from machine-assisted human trading to human-assisted machine trading,” Lamb explains.

What is Golden Book?

One of the operator’s most significant challenges is the increase in gambling tax enforced over recent years. Petra has been particularly vocal about this and the company’s profitability has taken a reasonable hit, since the first tax increase to 34.2% of GGR came into effect on 1 January 2025.

Holland Casino now pays 37.8% of GGR to the state, as per the additional increase in 2026, but with labour tax on top the business pays around 52% before they can look at their base running costs. It is not a small burden by any stretch of the imagination, so it is heartening to see the business doing well despite the tightening tax burden.

With such a significant rise in tax, you would forgive the company for cutting wherever possible, but Petra says they have made it work by maximising efficiency, restructuring, and maintaining their offering so the customer doesn’t notice that anything has changed.

What is Golden Book?

A huge thanks for his outstanding reporting on this site should go to Lee Davy, who for many years, brought poker to life on Calvin Ayre. I personally owe a huge debt of gratitude to Lee for the efforts he made in not only making me feel so well prepared to take up the mantle when he moved on to pastures new, but in establishing the Calvin Ayre brand so well for so many years within the poker world.

Ours is a niche industry, but it is a wonderful and welcoming one, and Calvin Ayre has been a huge part of the poker industry in my time, too. The name has opened doors, helped me speak to some of the biggest and best poker players from around the globe.  

Recent articles have been just important in bringing you, poker fans, the latest news, features that cut to the heart, diamond, spade and club of each issue and hopefully, entertaining you. While to some, the future of online poker is the most vital discussion point, others would like to know what it takes to quit their job and become a professional player.