UMIP 120 -Add Polygon renBTC and RBN as collateral currencies

Mhairi · March 3, 2022, 2:58pm

This UMIP proposes adding Polygon renBTC , RBN for use as collateral in UMA contracts.

UMAprotocol/UMIPs/blob/master/UMIPs/umip-120.md

**UMIP 120**

-   **UMIP title:** Add Polygon renBTC and RBN as collateral currencies.
-   **Author**  Chandler De Kock (chandler@umaproject.org)
-   **Status: Approved**
-   **Created:**  21 July

## Summary (2-5 sentences)

This UMIP proposes adding **Polygon renBTC** , **RBN** for use as collateral in UMA contracts.

## Technical Specification

To accomplish this upgrade, the following changes need to be made:

-   The **renBTC** address [Polygon token address](https://polygonscan.com/token/0xdbf31df14b66535af65aac99c32e9ea844e14501) 0xdbf31df14b66535af65aac99c32e9ea844e14501 needs to be added to the collateral currency whitelist introduced in UMIP-8.
-   A final fee of **0.012 renBTC**

-   The **RBN** address [Ethereum token address](https://etherscan.io/token/0x6123B0049F904d730dB3C36a31167D9d4121fA6B) 0x6123B0049F904d730dB3C36a31167D9d4121fA6B needs to be added to the collateral currency whitelist introduced in UMIP-8.
-   A final fee of **10 000 RBN**

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