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Sharebius · Encrypted messenger

End-to-end encrypted messenger with integrated payments

Privacy-first messaging with self-destructing messages, encrypted calls and built-in cryptocurrency payments.

  • Messages
  • Photos & video
  • Voice & video calls
  • Payments
Rania End-to-end encrypted
Booked the table for Friday. I covered the deposit.
Amazing. Sending my half now.
You sent
25.00 Paybius Coin
Friday deposit
In this conversation
Got it, thanks! Door code is 4417. 1 hour
Voice call · end-to-end encrypted
On the wireVoice call

7srVK5Wi32Rh/51W59i+B1rRGWFWZY06 ns6+lWgNJrvJEhb9NnDz0/b8aQGN5tCq uonNEOm6/e2GRZ+4erkd1YS1AeSI+XaO…

Readable only on the two phones
Client
Sharebius
Industry
Communications
Region
Global
Year
2023

The conversation, names and amounts on this page are illustrative.

The problem

Private right up until someone has to pay.

Privacy-focused messengers and payment apps have historically been separate products, which means the moment a conversation turns into a transaction, users leave the encrypted channel.

Building both into one app raises the stakes on the cryptography — it is now protecting money as well as messages.

Agree it in the conversation“I’ll send you my half.”
Make the paymentIn another app — outside the encryption
Carry on talking“Got it, thanks.”

The moment the talk turns into a transaction, it leaves the encrypted channel — and then has to find its way back.

01 Encrypt everything

Readable at the two ends. Nowhere in between.

End-to-end encryption secures messages, calls, photos and videos across the platform.

End to end means the message is locked on the sender's phone and only unlocked on the recipient's. Everything between — the network and the servers that relay it — carries something it cannot read.

Your phone Readable
Meet at 8? Bring the keys.
The network, and every server on the way

zyFxHE8akGzaq5rAecZfX+og7N+aHcn/RCHCL9N+pcdw+fujSSs8LRA7

No key here, so nothing to read

Their phone Readable
Meet at 8? Bring the keys.
Decrypted on the phone

Type anything and send it, or switch to a photo or video. The middle changes with every keystroke. The scrambled text is an illustration of ciphertext, not the app's real cipher output.

02 Give users control of persistence

The sender decides how long it lives.

Self-destruct timers let senders decide how long a message survives on the recipient's device.

Encryption protects a message on its way. A timer protects it after it has arrived: the person who wrote it chooses, when they send it, how long it survives on the other phone.

Lina’s phone · the sender
Omar End-to-end encrypted
Are you home later? I need to get in.
Spare key is under the blue pot. Delete after reading.
Self-destruct timerSender sets
Omar’s phone · the recipient
Lina End-to-end encrypted
Are you home later? I need to get in.
Pick a timer, then send the message.
Delivered1 hour later

Played back fast — drag the slider to move through it. Timer lengths shown are illustrative.

03 Encrypt the calls too

A call is a conversation too.

Voice and video calling run with the same encryption guarantees as messaging.

  • Voice and video, both run under the same end-to-end guarantee as the chat.
  • No weaker side door. A private chat is only as private as the call it turns into.

Sound travels as encrypted frames — illustrated here, not captured.

04 Build in payments

Pay inside the chat.

Integrated cryptocurrency lets users send and receive payments using Paybius Coin without leaving the conversation, alongside premium number purchase.

So the moment a conversation turns into a transaction, nobody leaves: the payment is sent from the thread, arrives in the thread, and is handled inside the same encrypted channel as the words around it.

Rania End-to-end encrypted
Tickets are booked for Saturday.
Legend. What do I owe you?
Message
On the wireMessage

6Sa0ekq58BffXb1KNQVAOFsAxnUc6FplgBDxwuiilxrhn/yxnP2kXORQ

Handled inside the encrypted channel

Amounts are illustrative. No balances or exchange rates are shown or implied.

Paybius Coin, both ways

Users send and receive payments in Paybius Coin without leaving the conversation.

Premium number purchase

Premium numbers can be bought in the app, alongside the integrated payments.

Paybius Swap

Separate work for Paybius: an automated market maker DEX on Binance Smart Chain. That one trades through contracts; this one pays a person, in a conversation.

The system

Locks at the ends, a courier in the middle.

Encrypted messaging, voice and video with a payment rail built into the conversation.

Built with

Native apps, a cloud behind them, Web3 for the money.

Native appsJavaKotlinSwift
CloudAWSDynamoDBGoogle Cloud Platform
PaymentsWeb3
Outcome

What changed.

Messages, calls and media protected end to end

Sender-controlled message lifetime

Payments handled inside the encrypted channel

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