May 28, 2025
–
1 min read
News
Security
The Polkadot Universal App for Ledger devices has just been updated to support Ethereum-style 20-byte addresses and ECDSA signatures, significantly improving compatibility with emerging Substrate-based chains like Mythos.
The Polkadot Universal App for Ledger devices has just been updated and is now available in the Ledger App Store. This release enhances compatibility across a wider range of Substrate-based networks, expanding the reach of secure hardware wallet support.
ECDSA + Keccak-256 Support: The app now includes support for ECDSA signatures and Keccak-256 hashing, both of which are required by several modern Substrate chains. The corresponding JavaScript library has also been updated to reflect these changes.
20-Byte Address Compatibility: With this update, the app supports Ethereum-style 20-byte account IDs, in addition to the traditional Substrate address formats.
signRaw Support for ECDSA: The signRaw function now works seamlessly with ECDSA keys, allowing for broader use cases in signing workflows.
💡 Note: There are no changes to the existing Polkadot derivation path.Compatibility
Early adopters include Nova Wallet and Talisman, which have already upgraded and confirmed compatibility with the new version. Subwallet and PolkadotJS are currently working on implementing support.
One of the immediate beneficiaries of this upgrade is the Mythos chain, a Substrate-based network focused on digital collectibles and gaming infrastructure. With its reliance on ECDSA signatures and Ethereum-style addresses, this update allows Mythos users to leverage Ledger hardware wallets securely and seamlessly.
This compatibility paves the way for a more secure and integrated user experience on Mythos, especially for participants in the NFT and gaming economy.
We extend our deepest thanks to the Web3 Foundation, whose funding and support made this upgrade possible.
A big thank you also goes to the Parity team for their invaluable technical assistance and collaboration.
Zondax is a globally distributed team with deep expertise in blockchain integrations. Having contributed to over 50 blockchain projects, we’ve been a core part of the Substrate ecosystem since 2018, and have completed multiple Web3 Foundation grants. We maintain many of the Ledger apps used across the Polkadot and Cosmos ecosystems.
👉 Check out our work on GitHub.
Read More
Todas en una: La nueva app de Polkadot
La nueva aplicación Polkadot gestiona fácilmente la red Polkadot, incluyendo parachains y relay chain, con actualizaciones. Creada por peticiones de la comunidad, centraliza el control y añade nuevas características sin perder seguridad.
Making the Most Out of the Beryx API: Your Ally for Filecoin Development
For over a year, Zondax has developed the Beryx Explorer and API. With over 90 endpoints, it streamlines interactions with the FVM and FEVM.
Polkadot Ledger Migration Assistant: Now Live
The Polkadot Ledger Migration Assistant offers a complete solution for migrating from legacy Ledger accounts to the new Polkadot generic app. With support for 17 networks users can safely transition their entire portfolio through one unified interface.
Other Articles
August 13, 2024
Zondax hosted a lively event in Buenos Aires, uniting blockchain communities over pizza, beer, and local treats, while showcasing Filecoin and Beryx.
June 28, 2024
Para desarrolladores y usuarios de Polkadot, las actualizaciones de runtime son un obstáculo conocido que interrumpe la funcionalidad de las aplicaciones y parachains, aunque son esenciales para la seguridad.
July 1, 2024
With the new Polkadot app coming soon, Zondax answers your top questions. This blog is your go-to guide for everything about the app and its exciting features.
Para desarrolladores y usuarios de Polkadot, las actualizaciones de runtime son un obstáculo conocido que interrumpe la funcionalidad de las aplicaciones y parachains, aunque son esenciales para la seguridad.
With the new Polkadot app coming soon, Zondax answers your top questions. This blog is your go-to guide for everything about the app and its exciting features.