electrum/RELEASE-NOTES

# Release 2.0

 * New address derivation (BIP32 + BIP44).

 * 8 bits of the seed phrase are used to store a version number. The
   current version number (0x01) refers to the current wallet
   structure (BIP44). The version number also serves as a checksum for
   the seed, and it will prevent the import of seeds from incompatible
   wallets.

 * New serialization format for unsigned or partially signed
   transactions, that includes the master public key and derivation
   needed to sign inputs. This new format is compact enough to
   send transactions to cold storage using QR codes

 * Deterministic Multisig wallets using parallel BIP32 derivations and
   P2SH addresses (2 of 2, 2 of 3).

 * New plugins:
   - Trezor: support for the Trezor hardware wallet by SatoshiLabs
   - Cosigner Pool: shared memory pool for partially signed transactions

 * BIP70: verification of signed payment requests
   - Verification is pure python, using tlslite.
   - In the GUI, payment requests are in the 'Invoices' tab.

 * New 'Receive' tab:
   - create and manage payment requests, with QR Codes
   - the former Receive tab was renamed to 'Addresses'
   - the former Point of Sale plugin is replaced by a resizeable
     window that pops up if you click on the QR code

 * The 'Send' tab in the Qt GUI supports transactions with multiple
   outputs, and with OP_RETURN "message"

 * The GUI can use the daemon: "electrum -d". The daemon can serve
   several clients. It times out if no client uses if for more than 5
   minutes.

 * More watching-only functionality: Create wallets to monitor any 
   address of choice by entering a list of addresses in the install wizard

 * Wallet files are saved as JSON instead of Python.

 * Documentation is now hosted on a wiki: http://electrum.orain.org



# Release 1.9.8

* Electrum servers were upgraded to version 0.9. The new server stores
  a Patrica tree of all UTXOs, an idea proposed by Alan Reiner in the
  bitcointalk forum. This property allows the client to directly
  request the balance of any address. The new commands are:
     1. getaddressbalance <address> 
     2. getaddressunspent <address>
     3. getutxoaddress <txid> <pos>

* Command-line commands that require a connection to the network spawn
  a daemon, that remains connected and handles subsequent
  commands. The daemon terminates itself if it remains unused for more
  than one minute. The purpose of this is to make scripting more
  efficient. For example, a bash script using many electrum commands
  will open only one connection.

# Release 1.9.7
* Fix for offline signing
* Various bugfixes
* GUI usability improvements
* Coinbase Buyback plugin

# Release 1.9.6
* During wallet creation, do not write seed to disk until it is encrypted.
* Confirmation dialog if the transaction fee is higher than 1mBTC.
* bugfixes

# Release 1.9.5

* Coin control: select addresses to send from
* Put addresses that have been used in a minimized section (Qt GUI)
* Allow non ascii chars in passwords


# Release 1.9.4
bugfixes: offline transactions

# Release 1.9.3
bugfixes: connection problems, transactions staying unverified

# Release 1.9.2
* fix a syntax error

# Release 1.9.1
* fix regression with --offline mode
* fix regression with --portable mode: use a dedicated directory

# Release 1.9

* The client connects to multiple servers in order to retrieve block headers and find the longest chain
* SSL certificate validation (to prevent MITM)
* Deterministic signatures (RFC 6979)
* Menu to create/restore/open wallets
* Create transactions with multiple outputs from CSV (comma separated values)
* New text gui: stdio
* Plugins are no longer tied to the qt GUI, they can reach all GUIs
* Proxy bugs have been fixed


# Release 1.8.1

* Notification option when receiving new tranactions 
* Confirm dialogue before sending large amounts 
* Alternative datafile location for non-windows systems
* Fix offline wallet creation
* Remove enforced tx fee
* Tray icon improvements
* Various bugfixes 


# Release 1.8

* Menubar in classic gui
* Updated the QR Code plugin to enable offline/online wallets to transmit unsigned/signed transactions via QR code.
* Fixed bug where never-confirmed transactions prevented further spending


# Release 1.7.4

* Increase default fee
* fix create and restore in command line
* fix verify message in the gui


# Release 1.7.3:

* Classic GUI can display amounts in mBTC
* Account selector in the classic GUI
* Changed the way the portable flag uses without supplying a -w argument
* Classic GUI asks users to enter their seed on wallet creation


# Release 1.7.2:  

* Transactions that are in the same block are displayed in chronological order in the history.
* The client computes transaction priority and rejects zero-fee transactions that need a fee.
* The default fee was lowered to 200 uBTC per kb.
* Due to an internal format change, your history may be pruned when
  you open your wallet for the first time after upgrading to 1.7.2. If
  this is the case, please visit a full server to restore your full
  history. You will only need to do that once.


# Release 1.7.1:  bugfixes.


# Release 1.7

* The Classic GUI can be extended with plugins. Developers who want to
add new features or third-party services to Electrum are invited to
write plugins. Some previously existing and non-essential features of
Electrum (point-of-sale mode, qrcode scanner) were removed from the
core and are now available as plugins.

* The wallet waits for 2 confirmations before creating new
addresses. This makes recovery from seed more robust. Note that it
might create unwanted gaps if you use Electrum 1.7 together with older
versions of Electrum.

* An interactive Python console replaces the 'Wall' tab. The provided
python environment gives users access to the wallet and gui. Most
electrum commands are available as python function in the
console. Custom scripts an be loaded with a "run(filename)"
command. Tab-completions are available.

* The location of the Electrum folder in Windows changed from
LOCALAPPDATA to APPDATA. Discussion on this topic can be found here:
https://bitcointalk.org/index.php?topic=144575.0

* Private keys can be exported from within the classic GUI:
  For a single address, use the address menu (right-click).
  To export the keys of your entire wallet, use the settings dialog (import/export tab).

* It is possible to create, sign and redeem multisig transaction using the 
command line interface.  This is made possible by the following new commands:
    dumpprivkey, listunspent, createmultisig, createrawtransaction, decoderawtransaction, signrawtransaction
The syntax of these commands is similar to their bitcoind counterpart. 
For an example, see Gavin's tutorial: https://gist.github.com/gavinandresen/3966071

* Offline wallets now work in a way similar to Armory: 
  1. user creates an unsigned transaction using the online (watching-only) wallet.
  2. unsigned transaction is copied to the offline computer, and signed by the offline wallet.
  3. signed transaction is copied to the online computer, broadcasted by the online client.
  4. All these steps can be done via the command line interface or the classic GUI. 

* Many command line commands have been renamed in order to make the syntax consistent with bitcoind.

# Release 1.6.2

== Classic GUI
* Added new version notification

# Release 1.6.1 (11-01-2013)

== Core
* It is now possible to restore a wallet from MPK (this will create a watching-only wallet)
* A switch button allows to easily switch between Lite and Classic GUI.

== Classic GUI
* Seed and MPK help dialogs were rewritten
* Point of Sale: requested amounts can be expressed in other currencies and are converted to bitcoin.

== Lite GUI
* The receiving button was removed in favor of a menu item to keep it consistent with the history toggle.

# Release 1.6.0 (07-01-2013)

== Core
* (Feature) Add support for importing, signing and verifiying compressed keys
* (Feature) Auto reconnect to random server on disconnect
* (Feature) Ultimate fallback to HTTP port 80 if TCP doesn't work on any server
* (Bug) Under rare circumstances changing password with incorrect password could damage wallet

== Lite GUI
* (Chore) Use blockchain.info for exchange rate data 
* (Feature) added currency conversion for BRL, CNY, RUB
* (Feature) Saraha theme
* (Feature) csv import/export for transactions including labels 

== Classic GUI
* (Chore) pruning servers now called "p", full servers "f" to avoid confusion with terms
* (Feature) Debits in history shown in red
* (Feature) csv import/export for transactions including labels 

# Release 1.5.8 (02-01-2013)

== Core
* (Bug) Fix pending address balance on received coins for pruning servers 
* (Bug) Fix history command line option to show output again (regression by SPV)
* (Chore) Add timeout to blockchain headers file download by HTTP
* (Feature) new option: -L, --language: default language used in GUI. 

== Lite GUI
* (Bug) Sending to auto-completed contacts works again
* (Chore) Added version number to title bar

== Classic GUI
* (Feature) Language selector in options.

# Release 1.5.7 (18-12-2012)

== Core
* The blockchain headers file is no longer included in the packages, it is downloaded on startup.
* New command line option: -P or --portable, for portable wallets. With this flag, all preferences are saved to the wallet file, and the blockchain headers file is in the same directory as the wallet

== Lite GUI
* (Feature) Added the ability to export your transactions to a CSV file.
* (Feature) Added a label dialog after sending a transaction.
* (Feature) Reworked receiving addresses; instead of a random selection from one of your receiving addresses a new widget will show listing unused addresses.
* (Chore)   Removed server selection. With all the new server options a simple menu item does not suffice anymore.