Proposed Groups

This is the list of proposed Community and Business Groups. To express support for a group, you must have a W3C account. Once a group has sufficient support (5 supporters), W3C announces its creation, lists it on the current groups page, and people can join it to begin work.

Community Groups are proposed and run by the community. Although W3C hosts these conversations, the groups do not necessarily represent the views of the W3C Membership or staff.

UTXO Web Wallet Interoperability Community Group

Proposed on 7 June 2026 (1 sponsor)

There are important use cases for self-sovereign identity in the emerging digital wallet ecosystem.

This group's mission is to enable wallets to integrate the UTXODNS protocol (developed within the IETF) for self-sovereign identity, payment addressing, and verifiable credential presentation.

The group will publish Specifications that allow wallets to:

Resolve .utxo domain names to multi‑chain blockchain endpoint identifiers, supporting networks such as Bitcoin (BTC), Ethereum (ETH), Solana (SOL), and any other blockchain that uses public key hashes or account‑based addresses.
Perform self‑sovereign authentication (sign a challenge using a private key bound to a .utxo domain, without any third‑party identity provider).
Construct and sign payments addressed to a .utxo domain on any supported chain, including stablecoins such as USDC, USDT, and Hong Kong regulated stablecoins.
Present verifiable credentials such as GLEIF vLEI (real‑time status, selective disclosure).

The group also expects to develop a reference implementation. Native browser APIs may be considered in a future phase once wallet adoption is widespread.

Sponsors:

Support creation

Community & Business Groups

Proposed Groups

Thinking of proposing a group?

UTXO Web Wallet Interoperability Community Group