# Add Noble-issued USDC (\`usdc.noble\`) to the Regen Ledger currency allowlist

**URL:** <https://forum.regen.network/t/add-noble-issued-usdc-usdc-noble-to-the-regen-ledger-currency-allowlist/464>\
**Category:** Governance\
**Tags:** currency-allow-list, relayer\
**Created:** [July 21, 2025, 6:55pm UTC](https://forum.regen.network/t/add-noble-issued-usdc-usdc-noble-to-the-regen-ledger-currency-allowlist/464 "2025-07-21T18:55:12Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![Marie](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@Marie](https://forum.regen.network/u/Marie)\
**Post date:** [September 18, 2025, 10:55am UTC](https://forum.regen.network/t/add-noble-issued-usdc-usdc-noble-to-the-regen-ledger-currency-allowlist/464/9 "2025-09-18T10:55:12Z")

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@brawlaphant Thanks for the thoughful framing.

But when adding an allowed denom to the marketplace, the provided `bank_denom` needs to be a concrete bank denom, eg an IBC hash `ibc/<HASH>` for IBC assets, see [Buf Schema Registry](https://buf.build/regen/regen-ledger/docs/main:regen.ecocredit.marketplace.v1#regen.ecocredit.marketplace.v1.AllowedDenom)

We can determine this hash in advance as long as we know the intended ICS-20 path (e.g., `transfer/channel-…[/…]/uusdc`). Indeed it doesn’t need to be live yet, but the proposal still has to specify the exact `ibc/<HASH>`. Using a placeholder—like `usdc.noble`—would require a follow-up proposal to remove it and add the correct IBC denom, and could even allow creation of sell orders with a temporary denom that won’t be usable. It looks like that scenario has already played out in [Proposal 39 on Mintscan](https://www.mintscan.io/regen/proposals/39), which we now need to clean up.

> [@Add Kava-issued USDT (\`usdt.kava\`) to the Regen Ledger currency allowlist](https://forum.regen.network/t/add-kava-issued-usdt-usdt-kava-to-the-regen-ledger-currency-allowlist/465/5):
>
> Since both `usdc.noble` and `usdt.kava` follow the exact same param update process — could they be submitted as a **single on-chain governance proposal** that adds both to the `currency_allow_list`?

Yes we can include multiple msgs as part of gov v1 proposals.

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