About
What Dozor is and who builds it
Dozor is a surebet scanner for esports and prediction markets. It reads odds from dozens of bookmakers, normalizes them, matches events and shows the discrepancies on one screen.
What the service does
It collects Live and Prematch prices, finds sets of outcomes where the sum of inverse odds is below one, and shows them with the ROI and the age of every price. The service does not accept bets and is not a bookmaker.
Who builds it
The team that develops the scanner. Blog posts are written by the Dozor editorial team using the scanner’s own data: the history of surebets found, how long they lived, and how they split across markets and bookmakers. Every number in an article comes with a date and a measurement window.
What we do not promise
Profit. A surebet is a disagreement between prices that lasts seconds; bookmakers limit accounts, void bets and settle markets by different rules. Dozor delivers data fast; the decisions and the responsibility stay with you. The service is for adults 18+ only.
Methodology: where the numbers in our articles come from
- A surebet in the data is an episode: a set of bets on one match, market and line across one set of books appeared and then disappeared. A flickering surebet produces several episodes, so next to episodes we report distinct surebets — distinct combinations of match, market, line and books.
- The scanner saves a snapshot of surebets every 2 seconds. Lifetime runs from the first snapshot to the last; “0 s” means the surebet made it into a single snapshot.
- The data excludes stale, frozen and outlier prices, prices while betting is suspended, and pairs of books from the same vendor, which share one line.
- ROI is the peak over the surebet’s life. For exchanges it is net of the taker fee, as in the scanner.
- Live or prematch is the match status at the moment the surebet appeared.
- The window is 30 days and is recalculated daily. Sportsbook pages and pair pages show the live window; articles show a snapshot with its date.
- On Free, surebets whose peak ROI stays below 1% are shown in full. Their share is counted across all surebets in the data, starting from the lowest ROI recorded.
Current window: October 11 – November 10, 2026. Episodes: 4,694,674; distinct surebets: 1,339,918. 15% of episodes lasted longer than 10 seconds and 3.7% longer than a minute. 11% are shown in full on Free: their peak ROI stays below 1%. ROI in the data ranges from 0.5% to 15.0%. A full day holds 83,963 to 218,468 episodes.
Contact us
Questions about the service, the data or partnerships: @dozor_manager on Telegram or watch@dozor.bet. Articles and data are in the blog, pricing is on the home page.