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Bitcoin Core address-indexed mod
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Bitcoin Core address-indexed/extended

Copyright (c) 2009-2014 Bitcoin Core Developers


This branch is based on the current master and includes the required changes to allow extended transaction lookups based on an address.

Setup and configuration

Use -addrindex=1 to enable address-based indexing of transactions. Reindexing via -reindex is required the first time.

RPC commands

The following new query commands are available:

> listalltransactions "address" (verbose skip count includeorphans)

Returns array of all transactions associated with address.

1. address (string, required) The Bitcoin address
2. verbose (numeric, optional, default=0) If 0, return only transaction hex
3. skip (numeric, optional, default=0) The number of transactions to skip
4. count (numeric, optional, default=100) The number of transactions to return
5. includeorphans (numeric, optional, default=0) If 1, include orphaned transactions
> listallunspent "address" (verbose minconf maxconf maxreqsigs)

Returns array of unspent transaction outputs with between minconf and maxconf (inclusive) 
confirmations spendable by the provided address whereby maximal maxreqsigs signatures are 
required to redeem the output.

1. address (string, required) The Bitcoin address
2. verbose (numeric, optional, default=0) If 0, exclude reqSigs, addresses, 
     scriptPubKey (asm, hex), blockhash, blocktime, blockheight
3. minconf (numeric, optional, default=1) The minimum confirmations to filter
4. maxconf (numeric, optional, default=9999999) The maximum confirmations to filter
5. maxreqsigs (numeric, optional, default=1) The number of signatures required to spend the output
> getallbalance "address" (minconf maxreqsigs)

Returns the sum of spendable transaction outputs by address with at least minconf 
confirmations whereby maximal maxreqsigs signatures are allowed to be required to 
redeem an output.

1. address (string, required) The Bitcoin address
2. minconf (numeric, optional, default=1) The minimum confirmations to filter
3. maxreqsigs (numeric, optional, default=1) The number of signatures required to spend an output
> gettxposition "txid"

Returns information related to the position of transaction.

1. txid (string, required) The transaction id
  "txid" : "hash",      (string) The transaction id (same as provided)
  "blockhash" : "hash", (string) The block hash
  "blockheight" : n,    (numeric) The block height (if orphaned: -1, unconfirmed: 0)
  "position": n         (numeric) The position of transaction within block (if unconfirmed: -1)

What is Bitcoin?

Bitcoin is an experimental new digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.

For more information, as well as an immediately useable, binary version of the Bitcoin Core software, see


Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see

Development process

Developers work in their own trees, then submit pull requests when they think their feature or bug fix is ready.

If it is a simple/trivial/non-controversial change, then one of the Bitcoin development team members simply pulls it.

If it is a more complicated or potentially controversial change, then the patch submitter will be asked to start a discussion (if they haven't already) on the mailing list.

The patch will be accepted if there is broad consensus that it is a good thing. Developers should expect to rework and resubmit patches if the code doesn't match the project's coding conventions (see doc/ or are controversial.

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Bitcoin.


Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check

Every pull request is built for both Windows and Linux on a dedicated server, and unit and sanity tests are automatically run. The binaries produced may be used for manual QA testing — a link to them will appear in a comment on the pull request posted by BitcoinPullTester. See for the build/test scripts.

Manual Quality Assurance (QA) Testing

Large changes should have a test plan, and should be tested by somebody other than the developer who wrote the code. See for how to create a test plan.


Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.

Translators should also subscribe to the mailing list.

Development tips and tricks

compiling for debugging

Run configure with the --enable-debug option, then make. Or run configure with CXXFLAGS="-g -ggdb -O0" or whatever debug flags you need.


If the code is behaving strangely, take a look in the debug.log file in the data directory; error and debugging message are written there.

The -debug=... command-line option controls debugging; running with just -debug will turn on all categories (and give you a very large debug.log file).

The Qt code routes qDebug() output to debug.log under category "qt": run with -debug=qt to see it.

testnet and regtest modes

Run with the -testnet option to run with "play bitcoins" on the test network, if you are testing multi-machine code that needs to operate across the internet.

If you are testing something that can run on one machine, run with the -regtest option. In regression test mode blocks can be created on-demand; see qa/rpc-tests/ for tests that run in -regest mode.


Bitcoin Core is a multithreaded application, and deadlocks or other multithreading bugs can be very difficult to track down. Compiling with -DDEBUG_LOCKORDER (configure CXXFLAGS="-DDEBUG_LOCKORDER -g") inserts run-time checks to keep track of what locks are held, and adds warning to the debug.log file if inconsistencies are detected.

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