Double-spending is no longer a theoretical possibility but a practical reality. Most of the end-user applications used widely today leave their users vulnerable to being defrauded via double-spend attacks. PayNoWay is a tool that you can use to test the applications that you, or your business, depend on to accept on-chain cryptocurrency payments.
Features:
- Send payment transactions with the same UX flow as other wallet applications.
- Easily broadcast double-spend transaction after a payment is sent, to return the funds to the internal wallet address.
- Fetch current network fee rate, or set a custom value.
- Optionally set automatic broadcasting of double-spend transactions.
- Control what happens to the payment transaction output - "Drop it" or "Replace with dust".
- By default double-spend transactions are broadcast to several web services simultaneously to improve chances of confirmation.
- Bitcoin mainnet and testnet networks
- Several address types - Legacy (p2pkh), SegWit backwards compatible, SegWit (bech32).
- Transaction history view where you can re-broadcast any past transaction, copy to clipboard any transaction as raw hexadecimal, or update any locally stored transaction by fetching it from the configured web service.
- Statistics dashboard (Payments vs. Double-spends) which shows total number of transactions as well as their total values. Optionally reset the dashboard at any time.