Crypto in your Telegram
Non-custodial wallet: receive, gift and send ETH and tokens without leaving the messenger. Keys stay with you.
Keys stay yours
Your seed is encrypted with a PIN on your device. We physically cannot spend your funds.
Gift links
Send crypto to anyone in Telegram — even if they don’t have a wallet yet. They open the link and claim it.
Alerts in chat
When a transaction arrives, the bot messages you in Telegram. The wallet lives where you already are.
How it works
Open the bot and create a wallet in a minute — no email or documents.
Your seed is PIN-encrypted and stays on your device.
Receive, send and gift ETH and tokens on three networks: Ethereum, Base and Arbitrum.
Secure by default
- ✓AES-GCM encryption with a PIN-derived key (PBKDF2, 600,000 iterations) — on device.
- ✓Transaction decoding before you sign: see what you approve, including risky allowances.
- ✓Seed and PIN never leave your device — only an encrypted backup and public addresses reach the server.
- ✓Mainnet, Base and Arbitrum — with a clear warning before you move real funds.
FAQ
Is this a custodial wallet? Do you hold my keys?
No. Block is non-custodial: the seed is generated and encrypted on your device and never sent to the server in plaintext. We physically cannot spend your funds. An encrypted copy may sync via Telegram CloudStorage, but only your PIN can decrypt it.
Where do key operations run?
Strictly on your device, in the browser. Wallet creation, seed import, PIN unlock and transaction signing are all client-side. The server only handles public data: addresses for alerts, transaction history via Etherscan APIs, swap proxies and PassimPay invoices.
Why is Block safe?
AES-GCM with a PIN-derived key (PBKDF2, 600,000 iterations), transaction decoding before you sign, and a clear warning before moving real funds. The crypto module is open source. Block has not had a full independent audit — do not store large amounts without your own risk assessment.
Which networks are supported?
Ethereum Mainnet, Base and Arbitrum One. Base and Arbitrum are L2s with sub-cent fees, suited to smaller transfers.