Wallet setup guide

Create a dedicated wallet for receiving payments through Cassia

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Cassia is non-custodial. We only store your public key (xpub) to generate receive addresses. We cannot access, move, or freeze your crypto. You are in full control.
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Your seed phrase is everything.

  • Your seed phrase (12 or 24 words) is the only way to access your wallet.
  • If you lose it — your funds are gone forever. No one, including Cassia, can recover them.
  • Never share it with anyone. Never enter it on any website. Cassia will never ask for it.
  • Write it down on paper. Store in a safe place. Do not screenshot or save digitally.
Pick the chain you're setting up
BIP44 derivation path
m/44'/60'/0'

Ethereum coin_type = 60. The same xpub works for Ethereum mainnet and every EVM chain (BSC, Polygon, Arbitrum, …).

Option A · New wallet via BIP39 tool (most private)

  1. Download bip39-standalone.html.
  2. Disconnect from the internet, then open the file in your browser.
  3. Click Generate — write the 12-word seed down on paper.
  4. In the Coin dropdown pick ETH — Ethereum.
  5. Scroll to the BIP44 section. Copy Account Extended Public Key — starts with xpub….
    Don't grab the field at the top. The one labelled BIP32 Extended Public Key uses the address-level path (depth 4–5) and Cassia will reject it. The right one is inside the BIP44 section.
  6. Paste it into Cassia's Connect-wallet form. Close the tab.

Option B · Existing Ledger / Trezor

Hardware wallets don't expose the xpub in their UI by default. Use a trusted helper such as ledger-live CLI (ledger-live getAddress --path) or open the device in a BIP32-aware wallet (e.g. MEW) and export the account xpub at path 44'/60'/0'.

Option C · Trust Wallet / MetaMask

Neither app shows the xpub in-app. Export the 12-word seed from the app, then use the BIP39 tool above (Option A) — derive at ETH to obtain the xpub. Do this offline.

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Want to test first? Cassia supports Sepolia (Ethereum testnet) and Tron Nile as testnets. Same xpub flow, no real money. See Testing your integration →

Before you continue

  • •Seed phrase written on paper (not digital)
  • •Stored in a safe, private location
  • •Browser tab with the BIP39 generator is closed
  • •You did NOT copy/save the seed phrase on your computer
  • •You understand: lose the phrase = lose the wallet. Cassia cannot help.

Need help?

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