bx fetch height

Get the last block height.

$ bx fetch-height --help

Usage: bx fetch-height [-h] [--config value] [SERVER-URL] [PUBLIC-KEY]

Info: Get the last block height. Requires a Libbitcoin server connection.

Options (named):

-c [--config]        The path to the configuration settings file.
-h [--help]          Get a description and instructions for this command.

Arguments (positional):

SERVER-URL           The URL of the Libbitcoin server to use. If not
                     specified the URL is obtained from configuration
                     settings or defaults.
PUBLIC-KEY           The public key of the Libbitcoin server. If not
                     specified the key is obtained from configuration
                     settings or defaults.

This command supports configuration settings.

The height reported will increase as more blocks are mined and may vary slightly between servers.

Example 1

$ bx fetch-height

325956

Example 2

Specified server-url

$ bx fetch-height tcp://mainnet.libbitcoin.net:9091

514826

Example 3

Specified server-url and public key (see here for more details)

$ bx fetch-height tcp://mainnet2.libbitcoin.net:9081 "}[YQ:ks:iKd0F1!ycPgj:4CVzfV-=jsF}x&%ff=/"

514826

Example 4

Specified server-url with an incorrect port number

$ bx fetch-height tcp://obelisk.unsystem.net

timed out