Transaction malleability was a historical issue in Bitcoin where transactions could be altered before confirmation, but BlueWallet for Android implements modern protections against this. The wallet primarily uses SegWit (Segregated Witness) addresses, which separate signature data from transaction data, completely eliminating the possibility of malleability for these transactions. This ensures that once a transaction is broadcast with a specific transaction ID (txid), that txid cannot be changed, providing certainty in transaction tracking. For advanced users, the implementation of Replace-By-Fee (RBF) provides an additional layer of control, allowing them to replace a transaction if needed without concerns about malleability complications. These technical safeguards operate seamlessly in the background, ensuring that users can transact with confidence without needing to understand the underlying complexities. To use a wallet with robust protections against historical Bitcoin vulnerabilities, the secure bluewallet implements modern standards.
