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🐬 Try MantaPay in Dolphin Testnet

MantaPay allows users to privatize public assets to private, transfer private asset, and convert private asset back to public assets (as demonstrated below).

DolphinPay Overview

Note: Public assets and private assets have different addresses (public addresses vs shielded addresses). There is no relationship between a public address and a shielded address.

Setup Testnet Accounts​

Install a Polkadot.JS Browser Extension and Create a Public Address​

Currently, Dolphin Testnet V2 supports Polakdot.JS browser extension wallet to manage public assets.

Download polkadot.js browser wallet, open the extension, and create a new account.

Install Manta Signer and Create a Shielded Address​

Signer is a native app to turbo-charge zero-knowledge proof generation. Signer is available for:

  • macOS (version 10.5 or later)
  • Ubuntu (version 18.04 or 20.04)
  • Windows (version 10 or later)

When you first open Signer, follow the prompts to create a new account:


Get Testnet Tokens​

Join Manta & Calamari's Discord, navigate to the #dolphin-faucet channel, and type /gimme. You should see a faucet options prompt:


You should first claim DOL, since you need DOL to pay gas fees. Then, you can claim your favorite testnet tokens like KSM, ROC, kBTC, etc.

Try MantaPay in Testnet​

Now let's send some private payments :)

Run Signer​

If Signer is not already running, open signer and enter your password to log in:


Go to Dolphin App. You should see that signer is connected in the top right corner of the screen:


Convert public assets to private assets​

Select the public address you are sending from, the token you are sending, and the amount you want to send to your shielded address. Press "To Private" to submit:


Finally, polkadot.js will prompt you to approve the transfer, and then publish it to the Dolphin blockchain:


Send private assets to a shielded address​

Press the private-public toggle button at the top of the form, so that you can send from your shielded address. Select the token you want to send, enter the amount you are sending, and enter the destination shielded address.

If you need an example shielded address to send to, you can send to yourself (click on the copy icon next to your shielded address), or to this example address:


(note that shielded addresses and public addresses have a different format, and are not interchageable)

Click "Private Transfer" to begin the transaction.


Signer will prompt you to enter your password and approve the transaction. Once approved, it will build a zero knowledge proof.


Finally, polkadot.js will prompt you to approve the transfer and then publish it to the Dolphin blockchain.

Convert private assets to public​

Press the private-public toggle button at the bottom of the form, so that you can send from your shielded address to one of your public accounts. Select the token you want to send, enter the amount you are sending, and select your public destination account.


Once again, Signer will prompt you to enter your password and approve the transaction. Once approved, it will build a zero knowledge proof.

Finally, polkadot.js will prompt you to approve the transfer and, then publish it to the Dolphin blockchain.


  • Check that polkadot.js browser extension is installed, and has permission to connect to the Dolphin web app.

    Click on you Polkadot.Js extension --> click on the βš™οΈ icon on the top-right corner --> then click on "Manage Website Access" --> check that "" is set to "Allowed". See the image below.

  • Check that the latest version of signer is installed, running, and logged in.

  • Make sure you input password at least 8 characters to create a new private account in signer.

  • Check that your shields are down if you are using Brave browser.

  • Check that you are connected to a node ("Ford" by default) and that your internet connection is stable.

  • Check that you have some public DOL in order to pay fees.

  • If you see a delay in the transaction, check the polkadot.js wallet metadata if it needs to be updated.

    See the link here for any metadata updates.

  • On Windows 10, occasionally the installer will fail due to WebView2 not installing correctly. If this happens, you will see a message like so:


    To fix this, you can try downloading and installing WebView2 runtime directly.

    Please note that it still might not work. The team is aware of the Windows issue and is currently working on a fix; we'll update the community on the new updates.

If all these checks pass and you still can't send transactions, please let us know on discord in the #dolphin-testnet channel so that we can improve Dolphin!


  1. Why do I need a Signer? Can I trust it?

    Signer serves two purposes: first is to protect your spending secrets, and second is to use native code to build zero-knowledge proofs. The Signer runs locally and will never share your secrets. The Signer is fully open source software and will be audited for security.

  2. Is the private token in Signer secure?

    All the secrets used to spend private tokens is stored locally in your computer and encrypted using AES. Signer will never send your secrets online.

  3. How can I recover private tokens if I forgot my Signer password?

    We will add recover feature to the Signer soon.

  4. How does private payment work?

    Find out more.

  5. I can’t find Calamari Network on Polkadot.Js

    1. To get the Calamari address, you should follow the below-mentioned steps.

      1.1 click on polkadot.js extension > Click on three vertical dots as mentioned in the image > Select Calamari Parachain.

      If you still don't see the "Calamari" parachain option, then please visit this URL

    2. Go to settings > Metadata > Update Metadata

      Then please follow steps mentioned in 1.1

  6. The To Private button on the dolphin testnet is not working

    Please try reloading the page at Click on the "To Private" button again once you see a number next to BOTH "Balance" fields. Wait patiently until the three dots in the private section ... disappear.

    Please note that our testnet is currently overwhelmingly popular, and many transactions are trying to go through the network simultaneously, so if you're still experiencing.

    1. Public to private tx not activating
    2. Polkadot.js wallet not showing
    3. Long periods for transactions

    Please wait and try again later!

  7. To remove your private account data completely and set up a new account, you should remove these files:

    • macOS:Β ~/Library/Application Support/manta-signer/
    • Linux:Β ~/.config/manta-signer/
    • Windows:Β ~/AppData/Roaming/manta-signer/
  8. How long will the testnet run?

    The testnet will run forever πŸ‘Ύ

Incentivized Testnet FAQs​

  1. I have followed the Twitter channels, but Gleam is not showing the βœ…

    First, please make sure the email account you're logged in on Gleam is the same as the account you were using when you filled the form. If not, you'll have to fill out the form again using the same email/account (both on Gleam and the Google Form). After that, please clean your cache, reload the page and try again.

  2. Which address should I enter in the form when asked "enter your private transfer transaction ID to this wallet address 2LTk1QjGptbMdHUVKYD6RzRuWv5hefTd1SrcZsS9o1ZEmvvppZmMfE36ChcEve7azJHXvrx5qptmBzDykaenTmTG?

    Go to, search your public wallet address of the dolphin app, find the extrinsic hash of your private transfer to the 2LTk1QjGptbMdHUVKYD6RzRuWv5hefTd1SrcZsS9o1ZEmvvppZmMfE36ChcEve7azJHXvrx5qptmBzDykaenTmTG, and copy/paste that into the form.

  3. Is the gleam form closed?

    No, please clear your browser cache and try again at the link

  4. How do I participate in the testnet?

    There is a very thorough guide, please follow the steps at: Manta Network Testnet V2: Walkthrough. Check the Dolphin V2 Resources & Official Announcement at

  5. How long will the incentive campaign run?

    The incentivized testnet campaign will run until the Calamari launch.