Table Of Contents

Previous topic

Examples

Next topic

Testing Applications

Introduction

The following guide aims to provide examples to help you start building Bdtcoin-based applications. To make the best use of this document, you may want to install the current version of Bdtcoin Core, either from source or from a pre-compiled executable.

Once installed, you’ll have access to three programs: bdtcoind, bdtcoin-qt, and bdtcoin-cli.

  • bdtcoin-qt provides a combination full Bdtcoin peer and wallet frontend. From the Help menu, you can access a console where you can enter the RPC commands used throughout this document.

  • bdtcoind is more useful for programming: it provides a full peer which you can interact with through RPCs to port 7397 (or 17397 for testnet).

  • bdtcoin-cli allows you to send RPC commands to bdtcoind from the command line. For example, bdtcoin-cli help

All three programs get settings from bdtcoin.conf in the Bdtcoin application directory:

  • Windows: %APPDATA%\Bdtcoin\

  • OSX: $HOME/Library/Application Support/Bdtcoin/

  • Linux: $HOME/.bdtcoin/

To use bdtcoind and bdtcoin-cli, you will need to add a RPC password to your bdtcoin.conf file. Both programs will read from the same file if both run on the same system as the same user, so any long random password will work:

rpcpassword=change_this_to_a_long_random_password

You should also make the bdtcoin.conf file only readable to its owner. On Linux, Mac OSX, and other Unix-like systems, this can be accomplished by running the following command in the Bdtcoin application directory:

chmod 0600 bdtcoin.conf

For development, it’s safer and cheaper to use Bdtcoin’s test network (testnet) or regression test mode (regtest) described below.

Questions about Bdtcoin use are best sent to the BdtcoinTalk forum and IRC channels. Errors or suggestions related to documentation on Bdtcoin.org can be submitted as an issue or posted to the bdtcoin-documentation mailing list.

In the following documentation, some strings have been shortened or wrapped: “[…]” indicates extra data was removed, and lines ending in a single backslash “\” are continued below. If you hover your mouse over a paragraph, cross-reference links will be shown in blue. If you hover over a cross-reference link, a brief definition of the term will be displayed in a tooltip.