GTbets runs its sportsbook at gtbets.eu. We found no confirmed sister site for it, and its owner is not public. Our one solid test did not link GTbets to Jazz Sports, BetPhoenix, or BetMania, so we cover those only as alternatives, not sisters.
How we checked GTbets for sister sites
We had one strong, checkable clue to test. Jazz Sports, a sportsbook, loads its sign-in page from a web address that looks like this: home.jazzsports.ag, with a “skin” name added to the end of the address. That kind of address is a signature. It tells us the Jazz Sports brand sits on a shared piece of betting software that can serve more than one brand name, swapping the branding based on that “skin” setting.
So we tried the same address pattern on GTbets. We looked for a matching “home.” address on the GTbets domain, and for any “skin” setting tied to GTbets. We found nothing. The address did not exist. We ran the same check on BetPhoenix and BetMania, two other well-known offshore sportsbooks, using their domains in the same pattern. Neither of them showed this “home.” address or a “skin” setting either. So none of these three sites showed the same technical fingerprint that Jazz Sports showed.
That is an important, honest result. It means we have no proof that GTbets shares software with Jazz Sports, BetPhoenix, or BetMania. It also means we found no proof that those three share software with each other, at least not through this test.
We did find one separate claim, unconnected to GTbets. BetPhoenix’s own site states that it is run by a company it calls its parent group, and that this group also runs BetMania and a third book called Skybook. A bettor forum thread groups BetMania, Skybook, and BetPhoenix together as one operator too, based on player complaints. That is a claim of shared ownership, made by BetPhoenix itself, not something we could independently verify on our end, and it does not involve GTbets or Jazz Sports at all. We are stating it plainly as an unproven claim, not a confirmed fact.
Bottom line on sisters: we found no confirmed sister site for GTbets. Anyone telling you otherwise, without showing you a shared address or a named owner, is guessing.
Sportsbook alternatives worth a look
Since we cannot point you to a real GTbets sister site, here are separate sportsbooks that offer a similar type of service. These are alternatives, not sisters. Treat each one as its own company unless stated otherwise.
Jazz Sports
Jazz Sports covers the same range of sports as GTbets: football, basketball, baseball, hockey, and soccer, plus a live in-play betting section. It runs on a modern site that loads game odds quickly. It also runs a casino section alongside the sportsbook, much like GTbets does. As noted above, this is the site where we found the clearest sign of a shared software setup, though only for Jazz Sports itself; we found no matching sign for GTbets.
BetPhoenix
BetPhoenix has been around since the mid-2000s. It offers a full sportsbook, a racebook for horse racing, and a casino, plus a welcome offer paid as free play rather than cash. By its own account it belongs to a wider group with BetMania and Skybook. It is a reasonable alternative to look at if you want a long-running book with a similar spread of sports to GTbets.
BetMania
BetMania is the third name in that same self-declared group. It runs sports betting and a casino side by side, and is often compared to BetPhoenix in reviews since the two share a similar look and similar offer structure. Again, this link is BetPhoenix’s own claim, worth knowing, but not something outside sources have fully nailed down.
GTbets sports betting and odds
GTbets covers the main US sports well: NFL and college football, NBA and college basketball, MLB, and NHL. It also lists soccer, tennis, UFC, boxing, and a racebook for horse racing. Odds cover the usual bet types: point spreads, moneylines, totals, and player and game props, along with parlays and same-game combos during the season. Live, in-game betting is available while matches are underway, with odds that move as the game moves. None of this is unusual for an offshore book of this size, but the range is wide enough to cover a typical US bettor’s needs.
The favorite team perk
GTbets still runs a season-long perk for picking a favorite team. A bettor sets a favorite team in their account for football and basketball, both pro and college. For the whole season, bets placed on that team’s side get a small improvement on the number, described as half a point better than the standard line. It is a small edge, not a big one, and it only applies to the team a bettor has chosen, but it is a real, ongoing perk rather than a one-off sign-up offer, and reviewers as of 2026 still describe it as active.
How much hassle are the ID checks
Getting an account open is quick: an email address, phone number, username, country, and address. Using the account without limits takes more. GTbets asks for a phone verification code before it lets a new player bet. On top of that, standard identity checks kick in once a player deposits regularly, usually after several card deposits, and GTbets can then ask for a copy of a government ID and a proof of address, such as a utility bill. Crypto users are not exempt from this; the checks apply the same way. This is a normal amount of paperwork for a licensed-feeling offshore book, not an unusual amount, but it is more than a fully anonymous crypto site would ask for, and it is worth expecting rather than being surprised by it later, especially at withdrawal time.
Crypto and other payment methods
For deposits, GTbets accepts Visa, Mastercard, and prepaid gift cards, alongside a wider list of crypto coins that has grown to include Bitcoin, Bitcoin Cash, Litecoin, Ethereum, Ripple, and stablecoins such as Tether and USD Coin. Crypto deposits tend to have a lower minimum than card deposits and no added fee. There is also a cash-based option through a service the site calls Quick Cash for players who prefer to deposit in person.
Withdrawals are narrower than deposits, which is common at this type of book. Bitcoin is the fastest and cheapest way to get money out, usually with no fee and a payout within a day or two, up to a weekly cap. Bank wire is also offered, but it is slower and carries a flat fee, and can take over a week to land. A small number of sites in this space have also started paying out in Ethereum. If getting paid quickly matters to you, crypto withdrawal is clearly the better route here than a bank wire.
The casino side, briefly
GTbets also runs a casino next to its sportsbook, with slots, table games, and a daily cash rebate on casino losses. Since this page is about the sports betting side, we are keeping this short. A separate page on this site covers the GTbets casino in full, including its games and its casino-specific offers.
Bottom line
GTbets is a live, working sportsbook at gtbets.eu, with a wide sports list, a real favorite-team perk, and solid crypto support for both deposits and withdrawals. We looked hard for a genuine sister site and could not confirm one; the technical clue that ties Jazz Sports to a shared betting platform did not show up for GTbets, BetPhoenix, or BetMania. Treat Jazz Sports, BetPhoenix, and BetMania as separate alternatives worth comparing, not as GTbets’ sisters, and expect a normal amount of ID paperwork once you start betting for real money.