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Bitcoin Wallet Tool for Testnet and Mainnet with Local BTC Sending

Generate or import Bitcoin wallet, inspect UTXOs, and send BTC directly in-browser with BIP39/BIP84 flow and local transaction signing.

Use this tool

Bitcoin Wallet for Testnet and Mainnet

Generate or import BIP39/BIP84 wallet, read balance and UTXOs, and send BTC directly in browser via mempool API.

Wallet mode

Default network is Testnet so you can test safely before moving to Mainnet.
When switching networks, wallet is rederived from seed or revalidated from WIF.

Need test BTC?

Use a testnet4 faucet to get testing coins and validate transfers without risk.

Open testnet4 faucet

Generate new BIP39 wallet

Creates english mnemonic and derives native SegWit address (BIP84).

Generate or import a wallet to read balance and send BTC.

Wallet balance

Confirmed

0 BTC

Unconfirmed

0 BTC

Total

0 BTC

Fee suggestion (mempool)

--

Available UTXOs

0 UTXO(s) loaded

No UTXOs found for this address.

Send BTC

If unchecked, only confirmed UTXOs are used during input selection.

This tool runs in-browser and does not store seed/WIF on server. Still, use small amounts and trusted environment.

Quick guide and practical context

Client-side Bitcoin wallet flow with BIP39 and BIP84

This tool generates BIP39 mnemonic and derives native SegWit addresses (BIP84) in your browser. You can also import existing wallet using mnemonic or WIF.

Testnet and Mainnet are both supported. Testnet stays as default so you can validate the flow before handling real BTC.

Balance, UTXO lookup, and local transaction signing

The page reads address balance and UTXOs through public mempool API endpoints. Sending workflow performs coin selection locally and signs the transaction in-browser.

After signing, only raw hex is sent to broadcast endpoint. Private material remains on your device by default.

  • Generate wallet from english BIP39 mnemonic.
  • Import wallet from seed phrase or WIF.
  • Read confirmed and unconfirmed balance.
  • Inspect UTXOs before spending.
  • Set fee rate and broadcast signed transaction.

Security notes and practical boundaries

No server-side custody is involved by default, but browser environment risks still exist, including malware, malicious extensions, and screen capture.

Use testnet for development and small-value tests. For meaningful holdings, prefer dedicated wallet software or hardware wallet.

Frequently asked questions

Does this tool support both testnet and mainnet?

Yes. You can switch network in the interface. Testnet is the recommended default.

Can I import both mnemonic and WIF?

Yes. The wallet supports BIP39 english mnemonic import and WIF private key import.

How does sending work without backend wallet server?

Transaction is built and signed locally in your browser. Public mempool API is used for UTXO lookup and broadcast only.

Are my seed and WIF uploaded to server?

Not by default. Sensitive key material stays local unless your browser environment is compromised.

Is this suitable for storing large BTC amounts?

No. For significant funds, use dedicated wallet solutions and stronger operational security.

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Privacy and local processing

Tools on this page run directly in your browser and do not send entered content to a backend. This improves privacy and reduces latency.

Bitcoin Wallet (Testnet/Mainnet) | Generate, Import, and Send BTC | Tools Lucasqc