Bitcoin Wallet - Send & receive bitcoins

Welcome to Bitcoin Wallet!

This is where your Bitcoins are always at hand, even in your pocket! Pay with ease by scanning QR codes and receive instant, reliable payments as a merchant. Be part of the future of transactions with our decentralized wallet.

What can you get from Bitcoin Wallet?

- Peer-to-peer transactions without registration or cloud dependency

- View Bitcoin amount in BTC, mBTC, and µBTC

- Easy conversion to national currencies

- Send and receive Bitcoin using NFC, QR codes, or Bitcoin URLs

- Offline payment capability through Bluetooth

- Get notified of received coins through system alerts

- Sweep paper wallets for secure cold storage

- Access Bitcoin balance with the app widget

- Support for Taproot, Segwit, and the new bech32m format ensuring safety

- Enhanced privacy with Tor compatibility via the Orbot app

Problems

Dust Transactions

Problem scenarios:

    · Some people use Bitcoin for receiving compensations for incredibly small workloads (e.g. clicking on an ad).

    · Some services misuse transactions as a messaging system (e.g. lost bets).

You should know that each payment under 0.01 BTC requires a fee of at least 0.0005 BTC. That means if you are receiving a payment of 0.0005 BTC or below, you will not be able to economically spend it!

Now, what about aggregating several 0.0005 BTC payments in one transaction? For example, you could spend 0.0005 BTC * 4 = 0.002 BTC. Problem here: The fee is 0.0005 per kilobyte, and aggregating builds larger (in bytes) transactions. You can roughly aggregate 5 transactions with a 0.0005 BTC fee.

So, as a general rule of thumb:

You should refrain from receiving payments smaller than 0.0001 BTC. We call them dust.

Note that these numbers will change over time, as Bitcoin value rises and falls and fee rules get adapted. Until then however, dust just uses up precious memory, making everything slower than it should be. Or, in extreme cases, causes running out of memory.

Out of Memory

Some of you experience out of memory problems. This surfaces in seemingly random crashes of the app. In extreme cases it crashes always on launch.

One part of the problem is a small heap size. Even if your device got more RAM in total, Android limits the heap that can be used by an individual app. The limit can be as low as 32 MB for old devices or as high as 192 MB.

The more important part is your usage pattern. Bitcoin Wallet (and to some extent Bitcoin in general) works best with amounts of 0.01 BTC or larger and a little bit of balance between receiving and spending. If you never spend you will accumulate unspent transactions (more precisely: unspent outputs) that will clog up your RAM. If you spend, Bitcoin Wallet can garbage collect spent transactions after a while.

Note that you can spend to yourself. Just make sure to choose an amount that aggregates a number of transactions, without letting that number get too large. If it gets too large, you'll bump into another limit: the transaction size limit.

General rules:

    · Try have about one spend every 30-50 transactions.

    · Refrain from receiving dust transactions.

    · Refrain from receiving transactions that pay lots of recipients at once.

    · The above is especially true on cheap or aging phones.

For more info, please contact us at email bitcoin.wallet.developers+play@gmail.com

Contribute to the evolution of digital currency with Bitcoin Wallet, an open-source and free software licensed under GPLv3. Find our source code on GitHub and manage translations through Transifex. Embrace the future of finance responsibly with Bitcoin Wallet – perfect for managing pocket-sized amounts securely.