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Bitcoin-Qt 0.8.2

Bitcoin-Qt version 0.8.2 is now available from:

This is a maintenance release that fixes many bugs and includes a few small new features.

Please report bugs using the issue tracker at github:

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from version 0.7.2 or earlier, the first time you run 0.8.2 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine.

0.8.2 Release notes

Fee Policy changes

The default fee for low-priority transactions is lowered from 0.0005 BTC (for each 1,000 bytes in the transaction; an average transaction is about 500 bytes) to 0.0001 BTC.

Payments (transaction outputs) of 0.543 times the minimum relay fee (0.00005430 BTC) are now considered 'non-standard', because storing them costs the network more than they are worth and spending them will usually cost their owner more in transaction fees than they are worth.

Non-standard transactions are not relayed across the network, are not included in blocks by most miners, and will not show up in your wallet until they are included in a block.

The default fee policy can be overridden using the -mintxfee and -minrelaytxfee command-line options, but note that we intend to replace the hard-coded fees with code that automatically calculates and suggests appropriate fees in the 0.9 release and note that if you set a fee policy significantly different from the rest of the network your transactions may never confirm.

Bitcoin-Qt changes

  • New icon and splash screen
  • Improve reporting of synchronization process
  • Remove hardcoded fee recommendations
  • Improve metadata of executable on MacOSX and Windows
  • Move export button to individual tabs instead of toolbar
  • Add "send coins" command to context menu in address book
  • Add "copy txid" command to copy transaction IDs from transaction overview
  • Save & restore window size and position when showing & hiding window
  • New translations: Arabic (ar), Bosnian (bs), Catalan (ca), Welsh (cy), Esperanto (eo), Interlingua (la), Latvian (lv) and many improvements to current translations


  • OSX support for click-to-pay (bitcoin:) links
  • Fix GUI disappearing problem on MacOSX (issue #1522)


  • Copy addresses to middle-mouse-button clipboard

Command-line options

  • -walletnotify will call a command on receiving transactions that affect the wallet.
  • -alertnotify will call a command on receiving an alert from the network.
  • -par now takes a negative number, to leave a certain amount of cores free.

JSON-RPC API changes

  • fixed a getblocktemplate bug that caused excessive CPU creating blocks.
  • listunspent now lists account and address information.
  • getinfo now also returns the time adjustment estimated from your peers.
  • getpeerinfo now returns bytessent, bytesrecv and syncnode.
  • gettxoutsetinfo returns statistics about the unspent transaction output database.
  • gettxout returns information about a specific unspent transaction output.

Networking changes

  • Significant changes to the networking code, reducing latency and memory consumption.
  • Avoid initial block download stalling.
  • Remove IRC seeding support.
  • Performance tweaks.
  • Added testnet DNS seeds.

Wallet compatibility/rescuing

  • Cases where wallets cannot be opened in another version/installation should be reduced.
  • -salvagewallet now works for encrypted wallets.

Known Bugs

  • Entering the 'getblocktemplate' or 'getwork' RPC commands into the Bitcoin-Qt debug console will cause Bitcoin-Qt to crash. Run Bitcoin-Qt with the -server command-line option to workaround.

Thanks to everybody who contributed to the 0.8.2 release!

  • APerson241
  • Andrew Poelstra
  • Calvin Owens
  • Chuck LeDuc Díaz
  • Colin Dean
  • David Griffith
  • David Serrano
  • Eric Lombrozo
  • Gavin Andresen
  • Gregory Maxwell
  • Jeff Garzik
  • Jonas Schnelli
  • Larry Gilbert
  • Luke Dashjr
  • Matt Corallo
  • Michael Ford
  • Mike Hearn
  • Patrick Brown
  • Peter Todd
  • Philip Kaufmann
  • Pieter Wuille
  • Richard Schwab
  • Roman Mindalev
  • Scott Howard
  • Tariq Bashir
  • Warren Togami
  • Wladimir J. van der Laan
  • freewil
  • gladoscc
  • kjj2
  • mb300sd
  • super3