KaChat

Secure messaging on Kaspa BlockDAG

Saved Accounts

-- KAS

No Conversations Yet

Start a new chat by adding a contact

No Group Chats Yet

Create an encrypted group and add contacts you have already exchanged a handshake with.

Select a chat

Choose a conversation on the left

Not synced yet

0 selected

The recipient won't see your messages until they message you or you ping them with a handshake. Handshakes cost 0.2 KAS and are returned to you if they accept. You lose privacy if you ping them.

Pending photo attachment

0:00 Recording voice message…

Replying to

Fund your chatting address to start chatting

0 selected

You are no longer a member of this group.

Fund your chatting address to start chatting

fee: -- KAS

0:00 Recording voice message…

Replying to

Pending photo attachment

Kaspa Hub

Nothing here right now

KaPosts, Broadcasts, ChangeNOW Swap and Kaspa Websites appear here when they are not in your dock. Manage them in Settings > Customization > Customize Dock.

Apps

Explore the Kaspa ecosystem. Links open in your browser.

KKaspa.org ▶Kaspa Stream ⛓Kaspa Explorer 🗺KasMap ▶KasShi 📰Kaspa News 🎮KasPlay 🛒KasMart 📺KasMedia 📊Kaspalytics ⚒️Kas-Smiths 🔬Kaspa Core R&D

Broadcasts

Public, unencrypted rooms on the Kaspa network. Anyone who joins the same channel sees the same messages.

Join or Create a Channel

Anyone who joins the same channel name can see and post messages there - there is no owner and no invite.

#

Recording... 0s

Fund your chatting address to start chatting

Replying to

fee: -- KAS

KaPosts

Post

Panel

New Post

Profile

Account

Account

About

Created—

Version—

Websitelinktr.ee/Kachat_ Support Emailkaspasilver@gmail.com

Settings

Customization

Appearance

Show Fee EstimateShow an estimated transaction cost before sending.

Show Setup GuidesKeeps the Welcome Guide reachable from your profile.

Language

Currency

Customize Dock

Kaspa Hub Opened from the Kaspa Hub tab, in this order. Nothing here is switched off, it is one click further away. Click one to move it into your dock, or drag to reorder.

Everything is in your dock. Click a dock item to move it back here.

Swap, KaPosts and Broadcasts are hidden while Child Mode is on, an adult can bring them back in Settings > Security > Child Mode.

Your Dock 5 of 5

Security

Password for Seed PhraseRequire your password to reveal the seed phrase or private key.

Password for Account LoginRequire your password when signing in to a saved account.

Password for Address Private KeysRequire your password to reveal a spending address's private key.

Save account on this deviceEncrypted key storage arrives in the next security phase.

Keep me signed inRestore the active account when KaChat opens.

Chats Payment Privacy

On: Anytime you receive Kaspa KaChat will do its best make sure the Kaspa goes to a fresh address not tied to your chatting identity. Sending Kaspa KaChat will always make sure it comes out of your primary spend address which is never associated with your chatting identity.

Off: All Kaspa will flow in and out of your chatting address

This setting belongs to this account alone - your other accounts keep their own.

Child Mode

Connection

Connection Settings

KaChat Indexer

Indexer URL

Message indexer service for chat functionality

KaPost Indexer

KaPost Indexer URL

K social network indexer that powers KaPosts feeds

Translation Service

Translation Service URL

Translates KaPosts written in another language. Runs on the KaPost indexer's box by default; point this at your own if you host one.

Broadcast Indexer

Broadcast Indexer URL

KaChat broadcast history indexer for #kaspa and #kachat-bugs

Push Registration

Push Indexer URL

Used only for push registration and updates

Kaspa Name Service

KNS API URL

KNS domain resolution service

Kaspa Explorer API

Kaspa REST API URL

REST API for transaction history and balance lookups

Kaspa Node

Kaspa Node

Connected only to this node

Automatic Scan discovers and connects to the best available nodes. Choosing a specific node connects only to it, without falling back to others. Doesn't affect the Indexer/KNS/REST API URLs above. Add custom addresses to the IP Address Book below to select them here.

IP Address Book

Label (optional) Node Address

Save your own node addresses here, then pick one under Kaspa Node above.

Kaspa Explorer

Used to build "view transaction" links throughout the app.

Notifications

Chats

Message NotificationsDesktop notification when a contact messages you and the chat isn't focused.

Play sound

Used when a contact has no custom notification mode set.

On iPhone and iPad, notifications work once KaChat is added to your Home Screen (Share > Add to Home Screen) and allowed when asked.

Per Contact

Set per-contact notification mode in each chat's info screen: Off, No Sound, or Sound.

Wallet

Address Activity

Notify when any of your spending or cold storage addresses receives Kaspa from an external source. Transfers between your own addresses are ignored.

KaPosts

Likes

Reposts

Follows

Dislikes

Comments

Mentions

Choose which KaPosts activity reaches you. Anything switched off sends no notification and does not appear in the KaPosts bell. Quotes of your posts count as reposts.

Chats

Require approval for photos from new contactsPhotos from someone you have not added or replied to wait behind a tap. Chat Info can always show a single contact's photos.

Contacts

A browser has no device address book, so KaChat reads your Nextcloud contacts instead. Connect a server in Settings → Storage → Nextcloud, then sync: any contact card that includes a Kaspa address is added here. Read-only, run on demand; nothing is written back to your server.

Storage

On This Device

Store encrypted messages locallyRequired for browser history and future cross-device backup.

Local storage usedCalculating…

How long messages are kept on this device, and how much space they use. Applies before any cloud storage.

Images and files the app can always download again. Clearing them frees space and loses nothing.

Cloud Storage

Cache

Total…

Everything here is downloaded or generated again when it is needed, so clearing it costs a little data and nothing else.

What's Cached

Message retention

Applies to this account's one-to-one chats on this device. Anything older than the window is deleted from this browser the next time KaChat cleans up, and it is not downloaded again. Handshakes are always kept, group chats are not affected, and "Keep forever" deletes nothing.

Nextcloud

Chat History

Diagnostics

Exports app/device info, connection settings, local message counts, and recent app logs as a file — for troubleshooting with support. No private keys, seed phrases, or decrypted message content are included.

Verbose API Logging

Logs every indexer request with full connection and timing detail. Leave off for normal use: failed and slow requests are always logged, and heavy logging slows the app down.

Danger Zone

Engineering diagnostics

Manual controls remain here for troubleshooting. Normal startup is automatic.

Core

Runtime & Identity

Phase 5A

App RuntimeStarting Rusty Kaspa…

Wallet IdentityRestoring browser wallet…

Connection

Kaspa Network

Starting

Primary RPCWaiting for wallet

Warm StandbyWaiting for primary RPC

◎

Node PoolPreparing persistent endpoint history

↯

Last Successful NodeNone recorded yet

◌

Connection HistoryNo connection attempts recorded

Messaging

Kasia Services

Starting

Kasia CipherLoading encryption runtime…

Sync & SubscriptionsStarting live wallet subscription…

Local Data

Storage & Recovery

Active

▣

Browser StorageWallet, contacts and messages persisted locally

◇

Recovery LayerVerified wallet record and message-history backup

Starting KaChat services…

Notifications

Node Connection

Status

Status Starting…

Connected NodeNot connected

Backup NodeNot connected Ready

Latency --

Last Sync --

Node Selection

Automatic Node Scan Recommended The Kaspa public node resolver picks a healthy public node for you, the way kaspa-ng does. Nothing to set up.

Kasia Public Node Better Kasia's public node at wss://wrpc.kasia.fyi, the one the Kasia web app uses. One known operator, nothing to set up, and no scanning.

Custom Node Best Your own Kaspa wRPC endpoint, as wss://your-domain through a TLS reverse proxy (no port). A plain ws:// address such as ws://192.168.1.50:17110 works only on the same LAN, and from this https page the browser marks the site “Not secure” while it is connected and may block it in a future release.

Actions

Recent Auto-Reconnects

0

Logged each time KaChat automatically moved you to a healthier node.

Create Chat

ADDRESS

Kaspa Address or KNS Domain

Enter a Kaspa address (kaspa:...) or KNS domain name (e.g., alice.kas)

CONTACTS

Your chats and the people you follow on KaPosts. Click one to fill in their address.

NAME (OPTIONAL)

New account

Create Account

Important

You will be shown a seed phrase. This is the only way to recover your account. Write it down and store it securely.

Seed Phrase Length

12 wordsStandard 24 wordsRecommended

Account Name

Write Down Your Seed Phrase

Store this in a safe place. Anyone with these words can access your account.

I have written down my seed phrase and stored it securely

Do you want to add a passphrase to your account?

Choose your passphrase

Write it down somewhere safe. Without it this account cannot be recovered, even with your seed phrase.

Passphrase Confirm Passphrase

Your chatting address

Checking...

This is the account your seed phrase opens on its own.

The short version

A passphrase is an extra word or sentence you add on top of your seed phrase. It is optional, and most people do not use one.

It does not lock your account

This is the part people get wrong. A passphrase does not put a password on your account. It opens a completely different account. Your seed phrase with no passphrase opens one account. The same seed phrase with the word "apple" opens another one. With "banana", another one again. Every passphrase is its own separate account, with its own address and its own balance.

Why anyone bothers

If someone finds your written seed phrase, they get the account it opens on its own. They do not get the one behind your passphrase, because they do not know there is one, and they could not guess it anyway.

The catch

There is no reset and no recovery. If you forget your passphrase, the account it opened is gone for good. Your seed phrase alone will not bring it back, and nobody can help you. Treat it exactly like the seed phrase itself: written down, somewhere safe, before you rely on it.

One more thing to know

If you type the wrong passphrase, nothing will tell you. You will simply land in a different account, and it will look empty. That is not a bug and your money is not lost - it just means you are in the wrong account.

So do you need one?

If you are not sure, choose No. Your account is still protected by your seed phrase, and you can always create another account with a passphrase later.

Setting up your account

Starting

Downloading everything this account has on chain. It only takes this long once.

You're all set

Your chats and history are up to date.

Existing account

Import Account

Where is this seed phrase from?

Different wallets store your Kaspa on different address paths. Pick where this seed phrase comes from so KaChat finds your funds and domains.

Account Name

Enter your recovery phrase 0/24

Type each word, or paste the whole phrase into any slot. Only real recovery words are accepted.

Did you create this seed with a passphrase?

If you are not sure, the answer is almost certainly no. A passphrase is something you would have typed in on purpose.

Enter your passphrase

It has to be exactly what you used before, including capital letters and spaces.

Passphrase

Your chatting address

Checking...

This is the account your seed phrase opens on its own.

The short version

A passphrase is an extra word or sentence you add on top of your seed phrase. It is optional, and most people do not use one.

It does not lock your account

This is the part people get wrong. A passphrase does not put a password on your account. It opens a completely different account. Your seed phrase with no passphrase opens one account. The same seed phrase with the word "apple" opens another one. With "banana", another one again. Every passphrase is its own separate account, with its own address and its own balance.

Why anyone bothers

If someone finds your written seed phrase, they get the account it opens on its own. They do not get the one behind your passphrase, because they do not know there is one, and they could not guess it anyway.

The catch

There is no reset and no recovery. If you forget your passphrase, the account it opened is gone for good. Your seed phrase alone will not bring it back, and nobody can help you. Treat it exactly like the seed phrase itself: written down, somewhere safe, before you rely on it.

One more thing to know

If you type the wrong passphrase, nothing will tell you. You will simply land in a different account, and it will look empty. That is not a bug and your money is not lost - it just means you are in the wrong account.

So do you need one?

If you never set one up, choose No. A passphrase is something you would have typed in on purpose, so if this is the first you are hearing of it, you do not have one.

Wipe and re-sync

Select Chats

Only the selected chats have their incoming messages wiped and re-synced. Sent messages and all other chats are untouched.

Security Warning

Anyone with your seed phrase can access your account. Never share it with anyone.

Kasia payload

Import Message Payload

Payload hex or protocol string

This decodes a Kasia-shaped payload through the engine and adds it as an incoming local message for the active chat.

Message

Export Raw Data

CSV downloads immediately. PDF opens the browser print dialog so you can save it as a PDF.

LOCAL CHAT

Delete selected messages?

These messages will be hidden from this browser only. They cannot be removed from Kaspa.

KaPosts

Tip

Amount (KAS)

Available: --

Network fee: --

Group Chats

New Group

Add contacts to the group. You control the membership as the group admin.

Not in your contacts? Add anyone by Kaspa address or KNS domain:

Group Info

Create KNS Profile

Real Kaspa transaction

Edit KNS Profile

Avatar

Processing avatar...

Banner

Processing banner...

Profile

Bio X handle Website Telegram Discord user id Email GitHub Redirect URL

Domain

Name—

Asset ID—

Real Kaspa transaction

Confirm Message Send

This will submit a real Kaspa transaction carrying the Kasia COMM payload. Preview mode stays available in Settings.

Payment Alert

Remove Saved Account

This account and its local data will be removed from this device.

Saved account

Rename Account

Enter a new name for this saved account.

Account Name

UTXO

Rename UTXO

Name

Leave blank to remove the name. Labels are stored on this device only.

Tap anywhere to copy

-- KAS

No wallet loaded

Just send 5-10 KAS at a time, that's plenty to cover chat fees for a while (about 500 messages per KAS).

Tap anywhere to copy

Help

Your Domains

Chatting Address

Balance -- KAS

Send Kaspa

Recipient

Amount (KAS)

Network Fee Normal

Manage Addresses

Total Balance -- KAS

Address Visibility

#0 - #49

Spending

Balance -- KAS

Chatting Address

Choose Your Chatting Address

If this seed already holds your identity at a different address, a KNS domain or a funded chatting balance, pick it here. Only addresses with a balance or domains are shown.

Chatting Address

This seed already has chats

Switch Chatting Address?

This seed already has conversations on the current chatting address. Switching starts fresh with the new address. Your existing conversations stay with the old address and are not deleted.

On-chain inscription

Send KNS Domain

Transfer to another Kaspa address. This inscribes an on-chain transfer (about 2 KAS committed from the owning address, most of it returned minus network fees).

Recipient

Real Kaspa transaction

Send Kaspa

Recipient

Combines all UTXOs at this address into a single one by sending the balance back to itself, to reduce the number of inputs a future send needs.

Amount (KAS)

Network Fee Normal

Spending address

Send Kaspa

Recipient

Amount (KAS)

Network Fee Normal

Security Warning

Anyone with this address's private key can spend its funds. Never share it with anyone.

Security

Enter Password

Password Confirm Password

Chess

Them 0:00

Waiting on opponent…

You 0:00

Promote pawn to:

Chat Info

More Info

View in Explorer

Receiving alias

Sending alias

These identify this conversation's messages on the network. Receiving is the alias on messages this contact sends you. Sending is the alias on messages you send them. Useful when building tools that message this chat.

Incoming NotificationsHow this one contact's messages arrive. Default follows the setting in Settings > Notifications.

Allow calls and video callsOff for everyone until you say so. While off, this contact cannot ring you or ask your Nextcloud to host a call, and the call button asks first. Calls go over Nextcloud Talk: one of you needs a Nextcloud with Talk, the other joins as a guest.

PhotosAutomatic follows Settings > Chats. Always Show renders this contact's photos straight away; Always Hide keeps them behind a tap.

Added—

Last Message—

Chess Stats—

0Sent

0Received

0Total

Chats

Quick Reactions

Click a slot and type the emoji to use. These six appear in every reaction menu and hover bar.

✓ Copied

Log Out

Signs out of this account. Wallet and message data stay on this device.