# Transitioning from Polygon Mumbai to Avalanche Fuji: Seeking USDT Asset ID for Integration

**URL:** <https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975>\
**Category:** Developer Discussion\
**Tags:** help-center, getting-started\
**Created:** [April 29, 2024, 7:14pm UTC](https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975 "2024-04-29T19:14:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![adityapadekar](https://avatars.discourse-cdn.com/v4/letter/a/6f9a4e/32.png) [@adityapadekar](https://community.fireblocks.com/u/adityapadekar)\
**Post date:** [April 29, 2024, 7:14pm UTC](https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975/1 "2024-04-29T19:14:35Z")

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I’m currently integrating USDC and USDT into an Ethereum mainnet environment using Fireblocks. Fireblocks provides a list of supported asset IDs through their API endpoint  
[List all assets and assets types supported by Fireblocks](https://developers.fireblocks.com/reference/get_supported-assets).

Initially, for testing purposes, we were utilizing the Polygon Mumbai network with the following asset IDs:

- MATIC\_POLYGON\_MUMBAI for USDC
- USDT\_POLYGON\_TEST\_MUMBAI\_ZU3P for USDT

However, since Polygon Mumbai is deprecated, I’m considering transitioning to Avalanche Fuji. I’ve found an asset ID for USDC (AVAXTEST), but I’m uncertain if there’s a supported asset ID for USDT on the Avalanche network.

Could someone confirm if there’s a supported asset ID for USDT on Avalanche Fuji, or suggest an alternative approach for integrating USDT in an Ethereum mainnet environment with Fireblocks? Thank you.

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**Author:** ![rotem](https://avatars.discourse-cdn.com/v4/letter/r/45deac/32.png) [@rotem](https://community.fireblocks.com/u/rotem)\
**Post date:** [May 1, 2024, 11:59am UTC](https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975/2 "2024-05-01T11:59:20Z")

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Hi @adityapadekar  
Confirming that there is a supported asset ID for USDT on Avalanche Fuji:  
{  
“id”: “USDT\_AVAX”,  
“name”: “Tether USD (Avalanche)”,  
“type”: “ERC20”,  
“contractAddress”: “0xc7198437980c041c805A1EDcbA50c1Ce5db95118”,  
“nativeAsset”: “AVAX”,  
“decimals”: 6  
},  
And although you have a USDC alternative we also support USDC on the avalanche network:  
{  
“id”: “USDC\_AVAX”,  
“name”: “USD Coin (Avalanche)”,  
“type”: “ERC20”,  
“contractAddress”: “0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E”,  
“nativeAsset”: “AVAX”,  
“decimals”: 6  
},  
I hope this helps

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**Author:** ![adityapadekar](https://avatars.discourse-cdn.com/v4/letter/a/6f9a4e/32.png) [@adityapadekar](https://community.fireblocks.com/u/adityapadekar)\
**Post date:** [May 1, 2024, 3:14pm UTC](https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975/3 "2024-05-01T15:14:30Z")

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When providing asset id, do we take the id or nativeAsset?

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<div class="post-metadata">

**Author:** ![rotem](https://avatars.discourse-cdn.com/v4/letter/r/45deac/32.png) [@rotem](https://community.fireblocks.com/u/rotem)\
**Post date:** [May 1, 2024, 5:23pm UTC](https://community.fireblocks.com/t/transitioning-from-polygon-mumbai-to-avalanche-fuji-seeking-usdt-asset-id-for-integration/975/4 "2024-05-01T17:23:21Z")

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@adityapadekar , Can you please clarify your question? When using using API endpoints we use the id: eg:USDC\_AVAX/USDT\_AVAX”, The native Asset is normally not used. I hope this clarifies a bit.