ord is an index, block explorer, and command-line wallet. It is experimental software with no warranty. See LICENSE for more details.

Ordinal theory imbues satoshis with numismatic value, allowing them to be collected and traded as curios.

Ordinal numbers are serial numbers for satoshis, assigned in the order in which they are mined, and preserved across transactions.

See the docs for documentation and guides.

See the BIP for a technical description of the assignment and transfer algorithm.

See the project board for currently prioritized issues.

Join the Discord server to chat with fellow ordinal degenerates.

Ordinals is open-source and community funded. The current lead maintainer of ord is raphjaph. Raph's work on ord is entirely funded by donations. If you can, please consider donating!

The donation address is bc1qguzk63exy7h5uygg8m2tcenca094a8t464jfyvrmr0s6wkt74wls3zr5m3.

This address is 2 of 4 multisig wallet with keys held by raphjaph, erin, rodarmor, and ordinally.

Bitcoin received will go towards funding maintenance and development of ord, as well as hosting costs for ordinals.com.

Thank you for donating!

ord relies on Bitcoin Core for private key management and transaction signing. This has a number of implications that you must understand in order to use ord wallet commands safely:

• Bitcoin Core is not aware of inscriptions and does not perform sat control. Using bitcoin-cli commands and RPC calls with ord wallets may lead to loss of inscriptions.

• ord wallet commands automatically load the ord wallet given by the --name option, which defaults to 'ord'. Keep in mind that after running an ord wallet command, an ord wallet may be loaded.

• Because ord has access to your Bitcoin Core wallets, ord should not be used with wallets that contain a material amount of funds. Keep ordinal and cardinal wallets segregated.

The ord server explorer hosts untrusted HTML and JavaScript. This creates potential security vulnerabilities, including cross-site scripting and spoofing attacks. You are solely responsible for understanding and mitigating these attacks. See the documentation for more details.

ord is written in Rust and can be built from source. Pre-built binaries are available on the releases page.

You can install the latest pre-built binary from the command line with:

curl --proto '=https' --tlsv1.2 -fsLS https://ordinals.com/install.sh | bash -s

Once ord is installed, you should be able to run ord --version on the command line.

On Linux, ord requires libssl-dev when building from source.

On Debian-derived Linux distributions, including Ubuntu:

sudo apt-get install pkg-config libssl-dev build-essential

On Red Hat-derived Linux distributions:

yum install -y pkgconfig openssl-devel
yum groupinstall "Development Tools"

You'll also need Rust:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Clone the ord repo:

git clone https://github.com/ordinals/ord.git
cd ord

To build a specific version of ord, first checkout that version:

git checkout <VERSION>

And finally to actually build ord:

cargo build --release

Once built, the ord binary can be found at ./target/release/ord.

ord requires rustc version 1.79.0 or later. Run rustc --version to ensure you have this version. Run rustup update to get the latest stable release.

A Docker image can be built with:

docker build -t ordinals/ord .

ord is available in Homebrew:

brew install ord

To build a .deb package:

cargo install cargo-deb
cargo deb

If you wish to contribute there are a couple things that are helpful to know. We put a lot of emphasis on proper testing in the code base, with three broad categories of tests: unit, integration and fuzz. Unit tests can usually be found at the bottom of a file in a mod block called tests. If you add or modify a function please also add a corresponding test. Integration tests try to test end-to-end functionality by executing a subcommand of the binary. Those can be found in the tests directory. We don't have a lot of fuzzing but the basic structure of how we do it can be found in the fuzz directory.

We strongly recommend installing just to make running the tests easier. To run our CI test suite you would do:

just ci

This corresponds to the commands:

cargo fmt -- --check
cargo test --all
cargo test --all -- --ignored

Have a look at the justfile to see some more helpful recipes (commands). Here are a couple more good ones:

just fmt
just fuzz
just doc
just watch ltest --all

If the tests are failing or hanging, you might need to increase the maximum number of open files by running ulimit -n 1024 in your shell before you run the tests, or in your shell configuration.

We also try to follow a TDD (Test-Driven-Development) approach, which means we use tests as a way to get visibility into the code. Tests have to run fast for that reason so that the feedback loop between making a change, running the test and seeing the result is small. To facilitate that we created a mocked Bitcoin Core instance in mockcore

ord requires a synced bitcoind node with -txindex to build the index of satoshi locations. ord communicates with bitcoind via RPC.

If bitcoind is run locally by the same user, without additional configuration, ord should find it automatically by reading the .cookie file from bitcoind's datadir, and connecting using the default RPC port.

If bitcoind is not on mainnet, is not run by the same user, has a non-default datadir, or a non-default port, you'll need to pass additional flags to ord. See ord --help for details.

ord makes RPC calls to bitcoind, which usually requires a username and password.

By default, ord looks a username and password in the cookie file created by bitcoind.

The cookie file path can be configured using --cookie-file:

ord --cookie-file /path/to/cookie/file server

Alternatively, ord can be supplied with a username and password on the command line:

ord --bitcoin-rpc-username foo --bitcoin-rpc-password bar server

Using environment variables:

export ORD_BITCOIN_RPC_USERNAME=foo
export ORD_BITCOIN_RPC_PASSWORD=bar
ord server

Or in the config file:

bitcoin_rpc_username: foo
bitcoin_rpc_password: bar

ord uses env_logger. Set the RUST_LOG environment variable in order to turn on logging. For example, run the server and show info-level log messages and above:

$ RUST_LOG=info cargo run server

Set the RUST_BACKTRACE environment variable in order to turn on full rust backtrace. For example, run the server and turn on debugging and full backtrace:

$ RUST_BACKTRACE=1 RUST_LOG=debug ord server

Release commit messages use the following template:

Release x.y.z

- Bump version: x.y.z → x.y.z
- Update changelog
- Update changelog contributor credits
- Update dependencies

To translate the docs we use mdBook i18n helper.

See mdbook-i18n-helpers usage guide for help.

Adding a new translations is somewhat involved, so feel free to start translation and open a pull request, even if your translation is incomplete.

Take a look at this commit for an example of adding a new translation. A maintainer will help you integrate it into our build system.

To start a new translation:

1. Install mdbook, mdbook-i18n-helpers, and mdbook-linkcheck:

   cargo install mdbook mdbook-i18n-helpers mdbook-linkcheck
   

2. Generate a new pot file named messages.pot:

   MDBOOK_OUTPUT='{"xgettext": {"pot-file": "messages.pot"}}'
   mdbook build -d po
   

3. Run msgmerge on XX.po where XX is the two-letter ISO-639 code for the language you are translating into. This will update the po file with the text of the most recent English version:

   msgmerge --update po/XX.po po/messages.pot
   

4. Untranslated sections are marked with #, fuzzy in XX.po. Edit the msgstr string with the translated text.

5. Execute the mdbook command to rebuild the docs. For Chinese, whose two-letter ISO-639 code is zh:

   mdbook build docs -d build
   MDBOOK_BOOK__LANGUAGE=zh mdbook build docs -d build/zh
   mv docs/build/zh/html docs/build/html/zh
   python3 -m http.server --directory docs/build/html --bind 127.0.0.1 8080
   

6. If everything looks good, commit XX.po and open a pull request on GitHub. Other changed files should be omitted from the pull request.