The InterStellar Manual

By Fintech LTD.

1. About Interstellar

Interstellar is a platform that helps you move money or other digital assets quickly, reliably, and at almost no cost.

Interstellar is powered by Stellar blockchain technology, and thus shares the same goal: to create a platform that connects banks, payment systems, and people.

There are so many ways Interstellar can be useful to you.

2. Benefits

Given how broad the Interstellar ecosystem is, Interstellar might mean different things to different people.

2.1 A Secure Multi-token Wallet

You can use Interstellar as a secure digital wallet to securely store your fiat and crypto-currencies. As examples, Interstellar will help you securely store your Bitcoin, Stellar Lumens or any other Stellar based asset.

Another neat feature of Interstellar is its support for multiple accounts, which is essential when you want to have different accounts for separate transactions.

2.2 A Decentralized Exchange

Why focus on one currency when you can own them all?

Exchange crypto-currencies between peers without a middle man. Safe, secure with no risk of bankruptcy from the exchange.

2.3 Multisig

Multisig(multiple signatures) will protect your account from thefts and loss.

Multisig is technology that forces your account to require multiple signatures before performing transactions. You could, for example, set up a 2 of 3 multisig account where 2 signers out of 3 are required to approve a payment before it is issued out.

Next, we'll discuss how to access the Interstellar app.

3. Apps

Interstellar runs on your mobile or desktop web browser. Preferably on recent versions of Google Chrome, since that is where we do the majority of our tests.

You can access Interstellar in two ways.

3.1 Testnet

If you are new to Interstellar, we recommend you use the testnet version for practice. The testnet version of Interstellar doesn't use real money.

3.2 Mainnet

Use the mainnet version if you are already comfortable with how Interstellar operates. The mainnet version of Interstellar use real money.

Have you decided what version of Interstellar you will use? Good. Let's get started.

4. Getting Started

4.1 Launch

You can launch Interstellar by visiting any of the following two websites:

If you are on desktop, you should see the following screenshot.

Desktop Landing

Click on Enter Account.

4.2 Session Password

Interstellar uses your session password to used to encrypt your sensitive information in your browser. Everytime you launch the Interstellar app, you will be required to either generate or reuse an existing session password.

New Session Password


For your security, Interstellar stores your session password in your browser, encrypted with bcrypt. Your password is never transferred nor stored on any remote server.

Once you've successfully entered your session password, you can now start account management.

5. Account Management

Multiple Accounts

One cool feature about Interstellar is that it can handle multiple accounts. This is ideal for users who prefer to have separate accounts for different types of transactions.

To better understand account management on Interstellar, you need to understand the concept of private keys and public keys.

5.1 Public vs Secret Keys

Interstellar uses the concepts of public keys and private keys. In simple terms, your public key is like your username that can be shared publicly. Meanwhile your private key is like your password that should never ever be shared with anyone.

Interstellar will automatically create a new private key for you whenever you want to create a new account. If you need two separate accounts, you'll have to generate two separate private keys.


Interstellar private keys usually start with S, meanwhile public keys usually start with G.



5.2 Create A New Account

To create a new account on Interstellar:

  • Click on the hamburger menu on the top left.
  • Select create account.
  • You'll be presented with two choices: a random key, or answering a questionnaire.
    • use the random key option if you want a new account quickly. Note however that the secret key this option generates will be hard to recover in case you lose it.
    • use the brainwallet option if you wish to generate a secret key that lives in your head. It will be easier to recover in case you misplace the secret key.

5.3 Import Existing Account

However you choose to create your Interstellar account, you'll end up with a secret key that looks like this: SCWB7Y6CS4UERWA4QHMA27ARIQYDPF7IHGIXYJ7VFFAGLYNNP4GKXLH2. Make sure you store that key securely.

You can import your secret key on a new computer if you wish to access your account on multiple devices.

5.4 BrainWallets

The brainwallet option is for users who may find it difficult or very inconvenient to safely store their secret keys as a bunch of text.

Please understand that even though Interstellar does many things to keep brainwallet safe, you shouldn't make it any easier for a hacker to "guess" the content of your brainwallet.


Choose a complex password for your brainwallet. Don't choose words that can easily be found in any dictionary. Also make sure your password is at least 8 letters long with capital letters and numbers.

Don't choose obvious emoji sequences when generating your emojis. For example, don't choose three poops as your emoji sequence. That's the first thing a hacker will try.

5.6 Backups

You should backup your accounts every time you add a new private to Interstellar.

To backup your accounts:

  • Make sure no one is around you.
  • Click on the hamburger menu on the top left.
  • Select export accounts.
  • Enter your session password.
  • The secret keys of your accounts will appear on the screen. You can copy and paste your keys in a separate backup in any other secure medium.

At this stage, you should have at least one successfully funded account.

6. Assets

The Stellar distributed network can be used to track, hold, and transfer any type of asset: dollars, euros, bitcoin, stocks, gold, and other tokens of value. Any asset on the network can be traded and exchanged with any other.

Other than lumens, all assets have:

  • Asset type: e.g., USD or BTC
  • Issuer: the account that created the asset.

Read more here.

On Interstellar, the asset balances for an account appear on the account's homepage as shown below.

Asset Balances

7. Deposits and Withdrawals

7.1 Deposits or Account Funding

Got an account? Congratulations.

Unfortunately, your account is almost useless without funds in it. You'll have to fund your account with some Stellar Lumens to perform any transactions on the decentralized network.

Interstellar currently supports two principal currencies for funding an account. They are:

  • Stellar Lumens: You need at least 21 stellar lumens to activate your account.
  • Bitcoin: Deposit at least 0.01 bitcoin on Interstellar, and you'll receive some Stellar Lumens in exchange.

To perform any deposits:

  • Click on the hamburger menu on the top left.
  • Click on Deposits.

Deposit Stellar Lumens

Deposit XLM

Deposit BTC

Deposit BTC

7.2 Withdrawals

To perform any withdrawals:

  • Click on the hamburger menu on the top left.
  • Click on Withdrawals.

Withdraw BTC

You can withdraw your BTC at any time.

Withdraw BTC

8. Send Assets

It's quite easy to send assets on Interstellar.

  • Click on the hamburger menu on the top left.
  • Select the account you wish to send from.
  • Click on Send.
  • Enter the public address of the account you want to send to.

8.1 Federation

Sharing your public key all the time can be error prone and inconvenient for some users.

Federation is one easy way to map your public key to a more human friendly format, just like an email address.

As an example, rather than sending funds to GCNSGHUCG5VMGLT5RIYYZSO7VQULQKAJ62QA33DBC5PPBSO57LFWVV6P, you could just as easily send to bank* The latter is easier to remember.

To set up federation for your own accounts:

  • Click on the hamburger menu on the top left.
  • Select the account you wish to federate.
  • Click on the Next button
  • Select Federation
  • Enter a new name for your federation account.

8.2 Transaction History

To view the transaction history for an account:

  • Click on the hamburger menu on the top left.
  • Select the account you wish to federate.
  • Click on the Next button
  • Select History

8.3 Notifications

Interstellar has this cool feature where all transactions on your accounts are notified in real time in your app. The notifications appear on the top right of the screen.

9. Multisig

Multisig Account

Multisig is a great way to secure your account from theft and loss, by requiring multiple signatures to approve any transaction.

Multisig accounts on Interstellar follow the M of N pattern:

  • M represents the minimum number of signers required to validate a transaction.
  • N represents the total number of signers available to validate a transaction.

E.g a 2 of 3 multisig account means you have 3 available signers, but only two are required to validate a transaction. A multisig account doesn't need permission to accept funds :).

9.1 Best Practices

By default, Interstellar accounts don't have multisig. This might be dangerous for companies or holders of large funds. If your private key gets lost or stolen, you lose all funds.

1 of 2 multisig accounts are not generally recommended. They will reduce the risk of loss, but will unfortunately increase the risk of theft. If one of the signers has his/her key stolen, the attacker can gain control of the account.

2 of 2 multisig accounts are not generally recommended. They will reduce the risk of theft, but will unfortunately also increase the risk of loss. If one of the signers loses his/her key, the account will be locked forever.

2 of 3 multisig accounts are recommended. They will reduce the risk of theft and also reduce the risk of loss. If one of the signers loses his/her key, the other two signers can continue signing and even replace the lost key with a new key.

In general, we recommend (N/2 + 1 ):N multisig accounts. That is, just a little bit above half of the available signers should be required.

9.2 Setup Multisig Accounts

Setup Multisig

To set up a multisig account:

  • Click on the hamburger menu on the top left.
  • Select Multisig
  • Select the account you want to transform to multisig.
  • Input the number of required signatures.
  • Input the number of available signature.
  • Input the public keys of the signers.
  • And you're done.

9.3 Multisig Transactions

Multisig Transactions

Transactions on a multisig account are done the same you'd perform any normal operation.

For example, to send funds from a multisig account to any another account, simply go to the send form and input the destination's address.

The difference however, is that your transactions don't confirm immediately. Instead, each of the available signers are notified that they have pending transactions to sign.

Multisig notifications appear in red on the top right corner of the screen. When you click on a multisig notification, you will see the list of pending requests available for you to sign.The signers are then given a choice to either accept or reject the transaction.

Suppose you had a 2 of 3 multisig account. If 1 signer rejected the transaction, and 2 users accepted the transaction, the transaction will still be validated.

10. Decentralized Exchange

Decentralized Exchange

Interstellar runs a decentralized exchange, powered by Stellar.

To effectively use Interstellar's decentralized exchange, you need to understand basic trading terms like orderbook, sell orders and buy orders.

10.1 Trade/Exchange

You need to be logged in with your Interstellar account before you can perform a trade. The logged in view enables the Buy and Sell forms, which are absent when viewing the decentralized exchange in guest mode.

Decentralized Exchange

To access the exchange:

  • Click on the hamburger menu on the top left of the screen.
  • Select the account you want to trade with.
  • Click on Exchange.
  • Create the trading pair you want to trade with. Voila!

10.2 Swap

Interstellar's swap feature is ideal for moments when you are not in the mood to trade and want to do a quick currency conversation at market prices.

Note that market price here refers to the lowest price a trader is willing to sell the asset you want.


Privacy Policy

Last revised on November 2017

The Gist

Fintech LTD, hereinafter referred to as FINTECH, will collect certain non-personally identify information about you as you use our sites. We may use this data to better understand our users. We can also publish this data, but the data will be about a large group of users, not individuals.

We will also ask you to provide personal information, but you'll always be able to opt out. If you give us personal information, we won't do anything evil with it.

We can also use cookies, but you can choose not to store these.

That's the basic idea, but you must read through the entire Privacy Policy below and agree with all the details before you use any of our sites.


If you have question about this Privacy Policy, please contact us at


Like most website operators, FINTECH collects non-personally-identifying information of the sort that web browsers and servers typically make available, such as the browser type, language preference, referring site, and the date and time of each visitor request. FINTECH's purpose in collecting non-personally identifying information is to better understand how FINTECH's visitors use its website. From time to time, FINTECH may release non-personally-identifying information in the aggregate, e.g., by publishing a report on trends in the usage of its website.

FINTECH also collects potentially personally-identifying information like Internet Protocol (IP) addresses. FINTECH does not use such information to identify its visitors, however, and does not disclose such information, other than under the same circumstances that it uses and discloses personally-identifying information, as described below. We may also collect and use IP addresses to block users who violated our Terms of Service.

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Privacy Policy Changes

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Terms of Service

Last revised on Nov 2017

The Gist

Fintech LTD, hereinafter referred to as FINTECH, operates the INTERSTELLAR service, which we hope you use. If you use it, please use it responsibly. If you don't, we'll have to terminate your account.

For paid accounts, you'll be charged on a monthly basis. You can cancel anytime, but there are no refunds.

You own the source code that you provide to INTERSTELLAR and you're responsible for keeping it safe.

The Terms of Service, INTERSTELLAR itself, and our prices can change at any time. We'll warn you 30 days in advance of any price changes. We'll try to warn you about major changes to the Terms of Service or INTERSTELLAR, but we make no guarantees.

That's the basic idea, but You must read through the entire Terms of Service below and agree with all the details before You use any of our sites (whether or not you have created an account).

Your Agreement with FINTECH

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If you have any question about the Terms, please contact us at

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General Legal Terms

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