--- title: SWOP description: The desktop program that does what the website cannot — generate wallets, send tokens and sign contract interactions, with the key never leaving your machine. --- SWOP is a Windows program you run on your own computer. It is included with the subscription. It exists because of a deliberate gap in the website. The site reads public addresses and holds no keys, which makes it safe but also means it can never move anything. Everything that requires a private key happens in SWOP instead, on your machine. ## What it does **Create or import a wallet.** Generate a new wallet, or import one you already hold — including a paper wallet, by typing or scanning the key. **Generate at scale.** Produce one wallet or a hundred in a batch, when you need a set of fresh addresses. **Export as a printable card.** A wallet can be exported as an image with QR codes, designed to be printed. This is how a paper wallet is produced: generated offline, printed, and never stored digitally. **Send ERC-20 tokens and ETH.** Build and sign a transfer locally, then broadcast it. **Interact with smart contracts.** Staking, presales and any contract call that needs a signature — the operations normally only available through a browser wallet that holds your key. ## How the key is handled The key is entered on your computer and used there. It is not transmitted anywhere, and **everything is erased when you close the program**. That is the reason for the separation between the two products. A website that could sign transactions would need access to a key, and any such access is a target. Keeping signing on a local machine removes the server from the problem entirely. > [!WARNING] > Entering a private key is always the moment of highest risk, wherever you do it. Only run SWOP downloaded from the official page, on a machine you trust. Siade Whales will never ask for your private key through the website, by message, or by any other channel. ## Languages SWOP is translated into more than 40 languages, including right-to-left scripts. ## The SWOP page **SWOP** in the navigation menu opens its page on the site. From there you can: - **Download for Windows** — the current version, with its size and **SHA-256 checksum** to verify it - **Download Whales OS** — the bootable USB image, with its own checksum - See the **languages** SWOP is available in - Follow **Getting started**: download and open, create or import a wallet, operate SWOP is free for members. What it offers, as the page lists it: - **Create or import** — a fresh wallet, or one you already own. Your keys stay on your PC - **Generate at scale** — one wallet or a hundred in one go - **Export a paper wallet** — public address, private key, recovery phrase and QR, ready to print and keep offline - **Operate on Ethereum** — send ETH and ERC-20 tokens, check balances, set the gas, sign and broadcast - **Token-risk flags** — every token scored **Safe**, **Verify** or **Malware**, so you do not sign away funds to a scam or spam contract - **Zero-persistence** — close it and everything is wiped: keys, history, sessions, even the language you picked - **Always the latest** — SWOP checks for new versions when it starts and takes you to the newest one ## Installing Download from the SWOP page on the site. The build is portable — there is no installer. Download it, launch it, and it runs. Verify the file against the published checksum before running it. The page provides the checksum alongside the download. ## Whales OS Also on that page: a bootable USB image. It boots a clean system from the USB stick, with the machine's installed operating system untouched and offline. For generating a wallet that must never touch a connected computer, this is the strongest option available without dedicated hardware. It ships with its own `.sha256` file so you can verify the image before writing it to a stick. ## Versions SWOP checks for updates against the site. New versions are mandatory rather than optional: when one is released, older builds stop and prompt for the update. This is intentional. A version that handles keys should not be left running once a newer one exists. ## The source code SWOP's source is published at [github.com/siadewhales/swop](https://github.com/siadewhales/swop), under a licence that permits reading and testing but not redistribution. It is public so that anyone handing a private key to a program can read what that program does with it.