Sagar Club APK Signature Check: Matching the Official Fingerprint
Published · by the Sagar Club app team
To prove that the app on your phone is the official build of Sagar Club, compare its signing certificate fingerprint with the one we publish. The genuine file is signed by CN=Sagar Club, O=Sagar Club, C=IN, and its certificate SHA-256 fingerprint starts with 95:1B:22 and ends with F4:21:AD. If all 64 characters match, the file came from us. If even one character is different, it did not, whatever the icon, the name or the person who sent it says.
This note shows how to run that Sagar Club APK signature check on an Android phone. You will see where the official value lives, which kind of tool reads it from a file, how to read the result, and what to do when the two strings do not line up. You need no computer and no account. A few minutes and some patience with long strings of letters and digits are enough.
Why the signature proves the file is official
Android will not install an app unless it is signed. The developer signs the package with a private key, and the matching certificate is stored inside the APK. At install time the phone checks the signature against the contents, and it rejects a file that was changed after signing. Google explains the system in its guide to app signing.
Our private key is kept by the Sagar Club app team and by nobody else. Anyone can copy the crown logo, the colours or the screenshots. Nobody else can make a file that carries our certificate. Suppose someone unpacks the official APK, adds code of their own and packs it again. The original signature no longer fits the contents, so the phone would refuse it. To get it installed, they must sign it again with a key of their own. A different key means a different certificate, and a different certificate means a different fingerprint. That is the whole trick, and it cannot be faked.
The fingerprint is a SHA-256 digest of the certificate: 32 bytes written as 64 hexadecimal characters, that is the digits 0 to 9 and the letters A to F. The SHA-2 family is built so that two different inputs practically never produce the same digest. That is why one visible line can stand in for the whole certificate.
Two hashes, two jobs
People often mix up two values. The file SHA-256 describes one exact download, here version 1.0.0, and it changes with every new release. The certificate fingerprint describes who signed the file, and it stays the same for every version we will ever ship. To prove where a file came from, the certificate is the value that counts. The file hash is a useful extra check that your download arrived whole.
Finding the fingerprint on the official page
We print the value in one place you can always return to: the official sources list with our signing certificate. Type sagar.app into the address bar yourself instead of tapping a link from a chat, and check that nothing is added before or after the name. On that page, the signing table gives three lines: who signed the file, the certificate SHA-256, and the file SHA-256 for version 1.0.0.
Tools do not agree on how to write the same number. Some print capitals with a colon between every pair of characters. Others print lower case with no separators at all. Both forms are the same fingerprint. Here is the official value in each form:
With colons: 95:1B:22:29:9B:FC:73:F8:B9:CA:F5:8D:10:97:93:A3:EF:70:68:17:A4:E0:EB:F9:F3:47:60:02:1E:F4:21:AD
Plain lower case: 951b22299bfc73f8b9caf58d109793a3ef706817a4e0ebf9f34760021ef421ad
Long strings are easy to misread on a small screen, so split the job. The colon form falls into eight blocks of four pairs. Compare one block at a time and tick it off in your head:
- Block 1:
95:1B:22:29 - Block 2:
9B:FC:73:F8 - Block 3:
B9:CA:F5:8D - Block 4:
10:97:93:A3 - Block 5:
EF:70:68:17 - Block 6:
A4:E0:EB:F9 - Block 7:
F3:47:60:02 - Block 8:
1E:F4:21:AD
A fake does not need to differ in many places. One wrong character is enough, so check every block, not only the first and the last. And never accept a screenshot of the fingerprint sent in a Telegram or WhatsApp group as proof. An image can be edited in seconds. Read the value from sagar.app itself.
Checking an APK on Android
Android's own Settings screen shows an app's name and version, but not its signing certificate. For the fingerprint you need a small helper app. The steps below work on any phone that runs the Sagar Club app, which means Android 7.0 or newer.
- Get a certificate viewer. Google Play lists several free package-inspection tools that read the signing certificate of an APK file or of an installed app. Pick one with a short permission list. It only needs to read the file you choose.
- Choose what to check. For a file you have downloaded, open it from your Downloads folder inside the tool. For the app already on your phone, pick it from the tool's list of installed apps and confirm that the package name is
app.sagar.colors. - Open the certificate details. Look for a heading such as Signature, Certificate or Signing info. Inside it, find the SHA-256 line. Skip any MD5 or SHA-1 lines; we publish SHA-256 only.
- Compare block by block. Hold the tool's value next to the official value and go through the eight blocks. While you are there, the subject or owner line should read CN=Sagar Club, O=Sagar Club, C=IN.
- Optional: check the file hash. A hash-checker app can compute the SHA-256 of the file in Downloads. For version 1.0.0 it should be
6d2df295ffac842c3b1a53baf40a568773f1587d932354a25c1e9ffed5c6103c. This value fits that one version only.
If you have a computer with the Android build tools, Google's apksigner gives the same answer. Its verify --print-certs command prints a line that starts with "Signer #1 certificate SHA-256 digest", written in the plain lower-case form shown above.
| Check | Where you do it | What you will see | It matches when |
|---|---|---|---|
| Installed app | Certificate viewer, list of installed apps | Package app.sagar.colors and a SHA-256 line | All 64 characters equal the official fingerprint |
| Downloaded APK | Certificate viewer, file opened from Downloads | A SHA-256 line, with or without colons | All 64 characters equal the official fingerprint |
| File hash | Hash-checker app on the phone | One 64-character string | It equals the file SHA-256 for v1.0.0 |
| On a computer | apksigner verify --print-certs | "Signer #1 certificate SHA-256 digest", lower case | It equals the plain lower-case form |
What a mismatch means
A different fingerprint is a clear answer: the Sagar Club app team did not sign that file. It does not matter how polished it looks, how many people in a group are sharing it, or what label it wears, such as "latest", "premium" or "unlocked". There is only one official build, and it has one certificate.
The subject line can fool people. Anyone who makes a key may type any name into it, including ours. So a file that shows "Sagar Club" as the signer but has a different fingerprint is still not ours. The name is a label; the fingerprint is the proof.
| What the tool shows | What it means | What to do |
|---|---|---|
| Fingerprint matches, signer CN=Sagar Club | The official build | Keep it and play |
| Signer says Sagar Club, fingerprint differs | Someone typed our name into their own certificate | Delete the file or uninstall the app |
| A different signer and a different fingerprint | A rebuilt or re-signed copy | Delete the file or uninstall the app |
| Package is not app.sagar.colors | A different app wearing our name | Uninstall it |
| No certificate can be read | A damaged or broken file | Delete it and download again from the official page |
| Fingerprint matches, file hash is not the v1.0.0 value | Signed by us, but not the build listed today | Compare the version, then fetch the current file |
A mismatch also explains two things you may have noticed. If a copy with our package name is installed, the official file cannot replace it, because Android only lets an update through when the certificates agree; you will see "App not installed". If a copy uses another package name, Android treats it as a separate app, so you end up with two icons side by side.
If you signed in inside a copy, assume its maker now knows the password you typed. The app has no password reset, so if you use that password anywhere else, change it on those services today. If anyone in our name asked you to pay, or to share an OTP or a UPI PIN, report it on cybercrime.gov.in or call the cyber crime helpline 1930.
Re-installing from the official source
The fix for a failed check is short. Remove what is wrong, fetch the real file, check it once, then install it. Because rounds and coins live on the game server, a registered account comes back exactly as you left it.
- Save a guest account first, if you have one. Removing the app deletes a guest that was never saved. If the app you are removing is the official one, for example after a broken install, use Save your account inside it before you uninstall. If it is a copy, do not type a new password into it. Just remove it.
- Uninstall the wrong app. Open Settings, then Apps, and look at every icon with our name. Uninstall any whose package is not
app.sagar.colors, and any that failed the fingerprint check. - Download the real file. Open sagar.app yourself and go to the APK download page with the full file details. The current build is version 1.0.0, about 6.9 MB, for Android 7.0 and newer.
- Check before you tap Install. Open the new file in your certificate viewer and run the block-by-block comparison once more. It takes a minute and settles the question for good.
- Install and sign in. Android asks you to allow installs from your browser, which is normal for any file that does not come from Google Play. Google Play Protect may also scan it. Then open the app and sign in with your username and password.
Later updates will be signed with the same certificate, so they install over this build and keep your sign-in. That also means the fingerprint you learned today is the one to look for next time. Only the file hash changes from version to version.
The check in one line
Same certificate, same publisher; different certificate, different publisher. Read the official value on sagar.app, read the value from your file or installed app, and compare all 64 characters. A full match means you have the real Sagar Club app, free to play with virtual coins and nothing to buy. Anything less means the file belongs in the bin, and the official download is a few taps away.
Get the signed file
Download APK v1.0.0 from this site, compare its certificate fingerprint, then play with free virtual coins. Adults 18+ only.