How SpinDog’s sisters were traced through site code

Reading SpinDog from its own site code

SpinDog is built as a single-page app: its footer, terms, privacy policy and offer boxes are compiled into one JavaScript file. The live file was read in full, as was the live code of each casino named here; Internet Archive copies of the same file, in their original form, give the history.

Sources: SpinDog’s live code and the archive copies listed below.

Why a line shown to one group still counts

The company line is the copyright line SpinDog’s site serves in its own code for its own address. A display condition governs who sees it, not what it says, so the line counts as the site’s own statement about its owner, reported with the condition attached and never as a public disclosure or proof of who owns the company. That is why the tie is rated medium, not high.

The live code matches the newest copy. The table records presence only, not why the line changed.

Sources: the SpinDog code copies in the table.

The control that tested the company line

Before any casino was called a sister, the same strings were searched for in the code of casinos on the same platform whose footers name other companies. Their code shares SpinDog’s file layout, payments library and content system, yet none of it carries Fortaprime SRL, the number 3-102-891738 or the agent clause.

Had the line turned up there, it would be platform boilerplate, and no casino here would be called a sister. One platform file can hold several companies’ lines, so each line is credited only to the brand whose own address serves it.

Sources: the control casinos’ live code.

Independent confirmation from a regulator

A separate route led the Dutch Kansspelautoriteit to Fortaprime. Its supervisors examined eight websites in 2024, and its fine decision names Fortaprime SRL as their provider. Bilucky, SupraPlay, Lucky Max, AmonBet and Hidden Jack run websites on that list and carry the number in their own code. That overlap shows the company in the code is a real business a regulator has traced to the same brands. It does not reach SpinDog, which the decision never mentions.

Sources: the Ksa decision and notice.

Evidence that does not make a sister

• Affiliate and review-site lists, which name other operators for SpinDog without any record behind them.
• Look-alike sites that use the SpinDog name and name their own operators.
• Shared software, file layout, payments library or block-page design, which also appear at casinos naming other companies.
• A company named in an older copy only: that is a former code link, dated, and never a current tie.

Register searches for SpinDog and Fortaprime

Negative results are stated as searches, not as facts about the companies. Neither the Curaçao regulator’s licence list and enforcement list nor Anjouan’s register of 1,527 licence rows held an entry for SpinDog, Fortaprime, Stonks or any Fortaprime brand domain when searched in September 2026. The Costa Rican and Cypriot company numbers are given as SpinDog’s code states them.

Sources: the Curaçao and Anjouan registers.

How this guide compares casinos

None of these casinos is rated or ranked: with no licence named and a tie resting on code lines, a score would imply a judgement the evidence cannot carry.

Corrections and rechecks

Dates on these pages are months of reading, not of publication. A tie called a sister is rechecked within 30 days of its read; when a casino’s code is read again, or a report to info@spindogsistersites.co.uk leads to a correction, the page is re-dated to that read.