# ECC's work to date and next steps for ZSAs **URL:** \ **Category:** General\ **Created:** [September 2, 2021, 9:20pm UTC](https://forum.zcashcommunity.com/t/eccs-work-to-date-and-next-steps-for-zsas/39974 "2021-09-02T21:20:28Z")\ **Posts on this page:** 1\ **Showing post:** 12
**Author:** ![tokidoki](https://avatars.discourse-cdn.com/v4/letter/t/dc4da7/32.png) [@tokidoki](https://forum.zcashcommunity.com/u/tokidoki)\ **Post date:** [September 30, 2021, 9:22am UTC](https://forum.zcashcommunity.com/t/eccs-work-to-date-and-next-steps-for-zsas/39974/12 "2021-09-30T09:22:35Z")
> [@GGuy](#): > > I couldn’t find any references. Have their been any tech discussion on UDA/ZSA other than what’s been shared in the forum? @GGuy probably you have seen these but might be relevant: > [@Zk-asset draft spec](https://forum.zcashcommunity.com/t/zk-asset-draft-spec/39489): > > The spec draft can be found [here](https://hackmd.io/86nLyT73TlKC-T4AAqN8KA) Zk assets aka zcash shielded assets (previously UDAs). bring private stable coins, wrapped Bitcoin and Eth, and other tokens to Zcash with the same privacy as shielded transactions, Indeed, no one can tell the difference between a shielded zec transaction and a zk-asset transaction. As a follow up on the successful [user defined assets panel](https://www.youtube.com/watch?v=PmA0rC83X-A) at Zcon2 and requests that I do more than research and suggest ideas, I wrote up a quick draft spec for zk-assets. V… > [@UDAs/ZSAs and burning funds for fees](https://forum.zcashcommunity.com/t/udas-zsas-and-burning-funds-for-fees/38491): > > Zcash should build user defined assets (UDAs). UDAs let us offer private stable coins, let other developers build on zcash and become engaged (e.g offering say privacy wrapped ERC20s), and bring us more users, cover traffic, and privacy. Imagine how useful a privacy wrapped version of tether would be? But a question keeps coming up about UDAs: how do we charge fees for UDAs? The basic answer, which is more than good enough for V1, is just like we do for shielded zec: you pay a public zec denomi… --- _[View the full topic](https://forum.zcashcommunity.com/t/eccs-work-to-date-and-next-steps-for-zsas/39974)._