echo | protocol

Your message, delivered. Even if you can't.

warning — this is a powerful tool: use it wisely
The project

A message on echo | protocol is not stored on a computer.
It is carved into a distributed digital ledger spread across the entire world.
Once the timer is set, no authority, no hacker — not even us — can stop delivery if you don't send the keep-alive signal.

Until that moment, only you can read, modify, or cancel it.

See how people use it Download the app
How it works in one sentence

A heartbeat that keeps your secrets sealed.
A silence that sets them free.

You set a timer and choose who receives your message if you stop checking in. Every day — or every week — you send a single signal: I'm here. The timer resets. Your message stays locked.

Miss the signal. The blockchain delivers it. Automatically. Irrevocably.

No company stores your content. No server can be seized. No password can be reset by customer support. The only key is yours — and the only trigger is time.

Who uses echo | protocol

Some things are too important
to leave to chance.

Real situations where echo | protocol changes everything.

Digital inheritance

Images, videos, a final letter. Documents, account passwords, or the seed phrase of a crypto wallet. Everything your family needs, delivered exactly when you can no longer deliver it yourself. Without lawyers, without delays, without anyone in between.

The story that must come out

An investigative journalist working in a difficult country. If something happens, the article cannot wait months — it loses relevance in days. Set a short timer. Reset it daily. If the signal stops, the story reaches its destination automatically.

A safeguard against the unexpected

Set a timer for six months or a year. Choose one or more trusted people. Whatever happens to you, they will receive the information. Or your funds. A backup for life itself — not just for data.

When discretion is everything

Sometimes a message needs to reach someone without leaving any trace on conventional platforms. Encrypted, stored on a distributed network, readable only by the recipient. No metadata. No sender name. No server that knows.

Crisis management & business continuity

Critical passwords, server access, business instructions. A trusted partner receives everything they need to keep things running only if you become unreachable. A succession plan that costs nothing and requires no notary.

Personal security — the last line of defence

If you lose physical access to your devices or simply your memory, the protocol acts as a silent custodian. It holds your most sensitive keys and delivers them — only to who you chose, only when the signal stops. Not before. Not to anyone else.

The Creator's Safety

Artists, researchers, developers working on something not yet ready for the world. If something happens to you, a lifetime of work doesn't disappear. Code, manuscripts, patents stored on IPFS — delivered to your collaborators or released open source. On your terms, even in your absence.

How it works

Four steps.
Then just live your life.

echo | protocol is designed to stay out of your way. Once configured, a single daily tap is all it takes to keep your message sealed.

The app works on your phone. The contract lives on the blockchain. The two things are completely independent.

1

Create your keys

Generated on your device. Your key never leaves your phone. No account, no email, no name required.

2

Choose your recipients

Add trusted contacts by their wallet address. One person or several — you decide who receives what.

3

Write your message

Text, images, documents, videos — up to 25 MB. Encrypted before it leaves your phone. Stored on a distributed network.

4

Send the heartbeat

Once a day or once a week — a single tap resets the timer. Stop tapping. The message is delivered.

Whispers

Messages that exist
only between two people.

Not every message needs a timer. Sometimes you simply need to send something that no platform should ever see.

Whispers are encrypted on your device, stored on a distributed network, and readable exclusively by the recipient. No company in the middle. No record on any server.

Text, images, documents, video — up to 25 MB
Encrypted before upload, decrypted only by recipient
Identified only by wallet address — no names
Stored on IPFS — no central server to seize
cosmos1xk…f92a · just now
The documents are attached. Keep them safe until I tell you.
🔐 end-to-end encrypted · IPFS
cosmos1xk…f92a · 2 days ago
📎 report_final.pdf · 4.2 MB
🔐 end-to-end encrypted · IPFS
cosmos1xk…f92a · 5 days ago
Everything in order. Timer reset.
🔐 end-to-end encrypted · IPFS
Under the hood

Built on math, not on trust.

You don't need to trust us. The system is designed so that you don't have to.

🔐

Encrypted on your device

Content is encrypted locally before leaving your phone. Only the recipient's key can open it.

🌐

Stored on IPFS

Distributed across thousands of nodes worldwide. No single server to shut down or seize.

⛓️

Enforced by blockchain

The delivery contract lives on Cosmos. It executes automatically — no human intervention required or possible.

🪪

No identity required

No email. No phone number. Your wallet address is your only identity. Completely anonymous by design.

🏠

Your key stays on your device

The private key is encrypted with your password and never transmitted. We cannot access your wallet. Ever.

👁️

We cannot read your messages

The encryption happens before upload. Even if someone accessed our infrastructure, they would find nothing readable.

Some things deserve
to be said — eventually.

Download echo | protocol and set up your first message in minutes.

⬇ Download APK for Android Read the use cases

No account required · No personal data · Free