A number in the issuer's register is checkable. But it is no guarantee
Two registers, nine numbers
Nine of the ten brands in our table publish a licence number: four from Curaçao, five from Anjouan. All nine can be traced in the issuer's register. Not one of them says anything about Slovakia.
Who issued it and under what number
Four brands give a Curaçao Gaming Authority licence: Bitcasino.io the number OGL/2023/111/0069, Bitsler OGL/2024/930/0387, Metaspins OGL/2024/1063/0437 and Shuffle OGL/2024/1337/0628. At all four we found the status Active in the issuer's register.
Five brands give a licence from Anjouan: Empire.io the number ALSI-132405042-FI3, Wolf.bet ALSI-132405048-FI3, Rainbet ALSI-152406029-FI2, PlayAmo ALSI-202508056-FI2 and Wild Fortune ALSI-202509073-FI2. At four of them we read a validity status; at Wolf.bet we did not trace it and leave that field empty.
The tenth in the table is Vave. On 2 September 2026 we checked its licence OGL/2024/1676/0905, held by Latcas B.V., issued 19 May 2025, in the Curaçao Gaming Authority certificate register, status active; the breakdown is in the Vave review. We do not count it among the nine: that count is what a brand publishes on its own site, and its licence footer we did not read.
The most coins of our ten: thirteen. The identity-verification clause sits in section 5, headed KYC/AML, and states no amount. Licence number ALSI-132405048-FI3 comes from Anjouan, and the company behind the brand is Cipher Games Ltd.
Four times the site's number and the register's diverge
This is the finding that surprised us most while reading, and it is checkable in minutes on each brand's site.
Metaspins. Its footer gives the Anjouan number ALSI-202606048-FI2 for 3-102-959384 SRL, while the certificate we traced is the Curaçao OGL/2024/1063/0437 for Metaspins N.V., no. 160102. Not two versions of one item but two entries at two issuers for two companies.
PlayAmo. A Curaçao number stands on the site, ALSI-202508056-FI2 in the Anjouan register. The same divergence, the other way.
Wild Fortune. A seven-digit number on the site, ALSI-202509073-FI2 in the Anjouan register. Its documents also give a Costa Rican company registration number; a third item, unrelated to the licence. Site and register numbers stand side by side in the summary: casinos without verification and their licences.
Bitcasino.io. Its help pages give OGL/2023/111/0069 and the Curaçao Gaming Authority, while its AML document names another number and supervisory body.
None of those contradictions proves the licence does not exist. It proves something else, more important to the reader: an item that differs in two documents of one brand proves nothing until you check it in the issuer's register yourself.
Three more places where the number does not say what it seems
The authority's name changes with the page. Empire.io names one body in its AML document and another on its licence pages. Wolf.bet links to Curaçao in its responsible-gambling section, while footer and terms speak of Anjouan. Metaspins names the authority by two different names in two places.
Rainbet gives no licence number at all. Its terms hold a company registration number and a sentence that it is licensed in Anjouan, without a number or the body's name. The number ALSI-152406029-FI2 we give comes from the register, not its own text.
Behind Bitsler's number stands an application, not a licence. The Curaçao entry OGL/2024/930/0387 corresponds to an application in the transitional regime, and the company operates on an operating certificate. The number 144430, also on the site, is the Curaçao company registration number, nothing to do with a gambling licence.
Contractually the difference between an issued licence and a filed application matters more than that between Curaçao and Anjouan. In the register it is visible, on the brand's site usually not.
What follows from these nine numbers for the Slovak market, namely nothing, is in foreign online casino. How a brand can be dated from the same registers is shown by new online casino.
What the number can check
Exactly one thing.
That in the issuer's register a certificate with that number exists, issued to that company, with that status on the day you looked. That is more than sites offer which mention a licence without a number, and it is checkable without us: the Anjouan register is a public page of holders, and Curaçao keeps each certificate at its own address, linked straight from the operator's footer.
One practical note on Curaçao. More than one register can be found for it, and they do not always give the same answer. We take as authoritative the certificate register linked straight from the operator's licence footer, not third-party overview lists.
The status in the register changes, and that is the one reason it is worth looking again. In the wider library we track a hundred brands, and at five the issuer's register shows a revoked licence. Not a hypothetical possibility but a line you read as easily as the word Active.
The file as at 1 September 2026 has 134 rows and 39 companies. Twenty-one of them hold a licence to run internet games in an internet casino. It is published in both CSV and XLSX.
What the number does not check
Nothing about Slovakia is checked. A licence from Curaçao or Anjouan is no individual licence under § 36 of zákon č. 30/2019 Z. z., and its holder does not fall within § 36(1). Which companies do is listed by who holds a Slovak licence.
Nor is payout checked. The issuer's register says the licence exists, not that money arrives and in what time. Amounts and time limits stand solely in the brand's terms, set out in payout limits.
And nothing about documents is checked. Each operator settles identity verification itself, under its own article number, and the differences are greater than between their licences. The breakdown is in identity verification.
How a certificate is checked step by step
The whole exercise takes less time than a cup of tea and needs only a browser.
- Go to the bottom of the brand's site. The licence footer tends to be the last line and usually links to proof of authorisation.
- Open that link. For Curaçao it leads to the certificate's own address, for Anjouan to the public list of holders.
- Compare three things: company name, authorisation and status. All three must match, not just the first.
- If the footer has no link, or the link leads nowhere, that is a result. Note it as you would a valid entry.
In that comparison one thing from the previous section is worth remembering. The company in the register is usually called something other than the site you play on, nothing suspicious in itself; suspicious is when none of the three matches.
The licence and the register of prohibited offers are independent
A brand can hold a valid Curaçao licence and be entered at the same time on the Slovak Zoznam zakázaných ponúk, the register of prohibited offers. No contradiction: two documents from two authorities on two different questions.
That is exactly how it looks in our ten: bitcasino.io, playamo.com and rainbet.com have both a licence number and an entry. When and why they were entered is written out in the list of prohibited offers.
Why the number is worth a look anyway
Because it is the one item on a brand's marketing page you can confirm with a third party. And because its absence is itself an answer: a brand that gives no number anywhere offers you no point to lean on, and that is information as useful as the certificate in the issuer's register, only in the other direction.
How we go about it, and what we do when register and terms say different things, is in how we read documents. And why a player from Slovakia is not the party the act deals with is shown by what the law says.