# Infrastructure

## Appraisal Data Providers

Refer to our dedicated Collateral Valuation documentation to learn about our data infrastructure, third-party providers and their appraisal algorithms.

{% content-ref url="../../protocol-mechanics/collateral-valuation" %}
[collateral-valuation](https://docs.unlockd.finance/protocol-mechanics/collateral-valuation)
{% endcontent-ref %}

## Reservoir

Reservoir is open infrastructure for trading NFTs and RWAs across major marketplaces and chains. It includes a universal router for creating and executing NFT and RWA liquidity across major marketplaces and within the Reservoir ecosystem.

Reservoir provides Unlockd with a modular set of tools that let us to interact with the NFT market at the appropriate level of abstraction for our application, enabling seamless liquidation options in the following marketplaces:

1. opensea.io
2. looksrare.org
3. x2y2.io
4. sudoswap.xyz
5. nft.coinbase.com
6. rarible.com
7. nftx.io
8. foundation.app
9. manifold.xyz
10. zora.co
11. blur.io
12. cryptopunks.app
13. element.market
14. infinity.xyz
15. universe.xyz
16. sansa.xyz
17. ens.vision
18. magically.gg
19. alienswap.xyz
20. sound.xyz
21. atomic0.com
22. rare.id
23. parcel.so
24. metahood.xyz
25. reservoir.market
26. tessera.co

## hashmail

hashmail is like Twilio for web3. They help dApps send personalized email communications (updates, alerts, rewards, billing, and reminder emails) to users’ wallet addresses. They deliver these communications across multiple channels — their web/mobile inbox, Telegram, web2 email, and Discord.

hashmail allows Unlockd to notify Borrowers when their [Health Factors](https://docs.unlockd.finance/protocol-mechanics/liquidations/health-factor) drop from key levels and notify users and the community when a loan needs to be [liquidated](https://docs.unlockd.finance/protocol-mechanics/liquidations/liquidation-process) and there are active auctions to bid. These notifications are both on-chain and off-chain.

## Push Protocol

Push enables cross-chain notifications & messaging for dApps, wallets, users & more.

Push allows Unlockd to notify Borrowers when their [Health Factors](https://docs.unlockd.finance/protocol-mechanics/liquidations/health-factor) drop from key levels and notify users and the community when a loan needs to be [liquidated](https://docs.unlockd.finance/protocol-mechanics/liquidations/liquidation-process) and there are active auctions to bid. These notifications are both on-chain and off-chain.

## Nexus Mutual

Nexus Mutual is a people-powered alternative to insurance that uses the power of Ethereum so people can share risks together without needing an insurance company.

Nexus Mutual allows Unlockd to offer our users the possibility of securing risk and potential bugs in smart contract code and covering events like hacks or multi-sig wallet issues.

{% hint style="warning" %}
This integration is expected to be deployed with Unlockd V2 in the upcoming months.
{% endhint %}

## Spectral Finance

Spectral Finance creates a programmable creditworthiness ecosystem facilitating capital efficiency on-chain through credit risk analysis.

Spectral Finance allows Unlockd to get insight into the Non-Fungible Credit Score of Borrowers and offer them special financial opportunities adapted to their on-chain reputation. 

{% hint style="warning" %}
This integration is expected to be deployed with Unlockd V2 in the upcoming months.
{% endhint %}