How to Set Up Guarda Wallet to Store Bitcoin and Ethereum in One Place?

Wallet Initialization Process

1. Download the official Guarda Wallet application from Google Play Store or Apple App Store — never use third-party APKs or IPA files distributed via unofficial websites.

2. Launch the app and select “Create New Wallet” to initiate non-custodial key generation directly on the device.

3. Choose a strong, unique password that will encrypt the local wallet file; this password is never transmitted to any server.

4. Write down the 12-word BIP-39 mnemonic phrase in exact order on physical paper — digital storage of this phrase introduces irreversible risk.

5. Confirm the mnemonic by selecting words in randomized sequence to verify user retention and prevent copy-paste errors.

Multi-Chain Asset Integration

1. After wallet creation, the interface displays Bitcoin (BTC) and Ethereum (ETH) as default assets with zero configuration required.

2. Tap the “+ Add Token” button to manually integrate ERC-20 tokens like USDT, DAI, or UNI using their contract addresses and decimal specifications.

3. For Bitcoin, enable SegWit-compatible receiving addresses by toggling “Use SegWit” in BTC settings — this reduces transaction fees without altering recovery logic.

4. Guarda internally maps BIP-44 derivation paths: m/44'/0'/0'/0 for BTC and m/44'/60'/0'/0 for ETH, ensuring deterministic address generation across sessions.

5. No external API keys or centralized backend calls are used when scanning blockchain state — all balance queries route through decentralized nodes operated by Guarda’s infrastructure.

Transaction Signing Security Model

1. Every outgoing transaction is signed exclusively within the device’s secure execution environment — private keys never leave memory space.

2. When sending ETH, the app constructs raw RLP-encoded transactions, populates nonce and gas parameters via local node sync, then signs with secp256k1 before broadcasting.

3. For BTC transfers, Guarda builds PSBT payloads offline, supports multisig inputs if imported via extended public keys, and validates UTXO selection against confirmed chain state.

4. Hardware wallet pairing is unsupported — Guarda relies solely on software-based cryptographic isolation rather than external signing devices.

5. All signature operations bypass WebView components; no JavaScript bridge handles cryptographic primitives to eliminate injection vectors.

Backup and Recovery Protocol

1. Recovery requires only the original 12-word mnemonic and correct network selection — no additional passwords or cloud backups are involved.

2. During restore, Guarda scans up to 20 sequential derivation indices per account for both BTC and ETH to locate used addresses.

3. The app does not store timestamps, labels, or transaction notes on-chain — those remain strictly local and are lost if the device is wiped without manual export.

4. Mnemonic verification occurs in two phases: first, checksum validation against BIP-39 wordlist; second, elliptic curve point derivation consistency check.

5. If a user enters an invalid mnemonic, Guarda displays “Invalid seed phrase” without revealing which word failed — preventing brute-force dictionary attacks.

Frequently Asked Questions

Q: Does Guarda Wallet support importing private keys directly?A: Yes, but only in hexadecimal format for single-address wallets. HD wallet imports require BIP-39 mnemonics or extended public keys — raw WIF formats are rejected for security reasons.

Q: Can I use the same Guarda wallet to hold BEP-20 tokens on Binance Smart Chain?A: Yes, Guarda auto-detects BSC upon token addition if the contract address matches known BEP-20 patterns. Users must manually specify BSC as the network during token import.

Q: Is there a way to disable automatic balance updates to reduce background data usage?A: No. Balance synchronization is mandatory and continuous — Guarda does not offer offline mode or manual refresh toggles due to reliance on real-time UTXO and nonce tracking.

Q: What happens if I lose my device and forget the wallet password but still have the mnemonic?A: The password is only used to decrypt the local encrypted wallet file. With the mnemonic, you can fully restore all assets on any compatible device without needing the password.