PQ Wallet

PQ Wallet is a desktop wallet for the BTX blockchain, available for Windows, macOS, and Linux. It manages the post-quantum keys that control BTX coins, signs transactions with the ML-DSA-44 and SLH-DSA-128s schemes required by BTX consensus, and includes qID sign-in. It is distributed at pq-wallet.com.

#Overview

BTX accepts no ECDSA signatures, so wallets written for Bitcoin and its derivatives cannot be reused on the network. A BTX wallet must generate post-quantum key pairs, derive bech32m addresses with the btx1z prefix for the chain's P2MR output type, and produce ML-DSA or SLH-DSA signatures when spending. PQ Wallet implements this stack for desktop operating systems; the mobile bonuz wallet covers iOS and Android.

#Platform support

PQ Wallet runs on Windows, macOS, and Linux. Releases are distributed through pq-wallet.com. Desktop is the primary environment for holders who prefer key material on a machine they control directly rather than on a phone; within the BTX ecosystem the two form factors are split between PQ Wallet and bonuz wallet.

#Keys and signatures

The wallet's key material consists of the post-quantum signature keys defined by the BTX protocol. ML-DSA-44 is a lattice-based scheme standardized by NIST in FIPS 204, and SLH-DSA-128s is a hash-based scheme standardized in FIPS 205. Both produce signatures considerably larger than the ECDSA signatures used by classical wallets, a difference the BTX protocol absorbs at the consensus layer with a larger block size. From the user's perspective, sending and receiving works as on other UTXO wallets: funds are received to an address, and spending consumes previous outputs and signs the new transaction.

#qID integration

PQ Wallet ships qID, the open-source post-quantum identity system whose identity keys are the same key types used on BTX. Through qID, the wallet can respond to sign-in requests from services, using a signature rather than a password. The related qID Connect connection layer, in development as of July 2026, is intended to standardize how applications deliver such requests to wallets.

#Related software

PQ Wallet is developed by the same team that maintains qID and the BTXScan block explorer. Its mobile counterpart in the BTX ecosystem is bonuz wallet for iOS and Android. Transactions created with the wallet can be inspected on BTXScan at btxscan.io like any other BTX transaction.