# CDR #10: Zumer - Sumeria Labs | NFT Floor price

**URL:** <https://forum.diadata.org/t/cdr-10-zumer-sumeria-labs-nft-floor-price/301>\
**Category:** CDRs - Custom Delivery Requests\
**Tags:** xfloor, nftfi, nft-price-feed, ethereum, lending\
**Created:** [May 31, 2022, 10:22am UTC](https://forum.diadata.org/t/cdr-10-zumer-sumeria-labs-nft-floor-price/301 "2022-05-31T10:22:38Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![moonsman\_sy](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.diadata.org/moonsman_sy/32/159_2.png) [@moonsman\_sy](https://forum.diadata.org/u/moonsman_sy)\
**Post date:** [September 19, 2022, 4:35pm UTC](https://forum.diadata.org/t/cdr-10-zumer-sumeria-labs-nft-floor-price/301/3 "2022-09-19T16:35:34Z")

</div>

## Zumer

Peer to pool permissionless protocol that enables borrowing and lending using NFTs as collateral.

## Feed usage

**Data type** : Price feed

**Use case** : The feed will be used to assess collateral value based on the floor price of an NFT.

## Specifications

**Delivery method** : ETH Rinkeby

**Update mechanism** : Time based + Deviation based

**Threshold - Deviation** : 1%

**Methodology** : 30 day time weighted average of floor price

**Frequency - Time based** : 8 Hours

**Frequency - Deviation based** : 10 Minutes

**Sources (by chain/version)**: Opensea market place contract (Ethereum)

**Other relevant information** :

Otherdeed for Otherside: 0x34d85c9cdeb23fa97cb08333b511ac86e1c4e258

Moonbirds: 0x23581767a106ae21c074b2276d25e5c3e136a68b

Invisible Friends: 0x59468516a8259058bad1ca5f8f4bff190d30e066

Mfers: 0x79fcdef22feed20eddacbb2587640e45491b757f

Azuki: 0xed5af388653567af2f388e6224dc7c4b3241c544

Nouns: 0x9c8ff314c9bc7f6e59a9d9225fb22946427edc03

Proof Collective: 0x08d7c0242953446436f34b4c78fe9da38c73668d

DigiDaigaku: 0xd1258db6ac08eb0e625b75b371c023da478e94a9

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