> For the complete documentation index, see [llms.txt](https://docs.creditcoin.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.creditcoin.org/creditcoin-usc.md).

# Creditcoin USC

In today’s interconnected world, institutions and applications are no longer confined to a single blockchain. Value, data, and users are distributed across many networks, but connecting them securely has remained challenging. 

The most common solution has been to rely on centralized oracles and bridges, but doing so undermines the very principles that make blockchains trustworthy in the first place. By placing trust in a single oracle operator, institutions expose themselves and their clients to a single point of failure. In such a system, funds can be stolen and data can be falsified.

The diagram below illustrates how a centralized oracle concentrates power and risk in one place.

<figure><img src="/files/oMJdhGF7YNCveZREYBNz" alt=""><figcaption></figcaption></figure>

**Creditcoin USC** is a project which extends the capabilities of  `Creditcoin` with the addition of a **decentralized oracle infrastructure**.

Decentralized oracles solve these problem by eliminating the single point of failure: instead of relying on one trusted party that could corrupt or falsify data, trust is distributed across multiple independent parties, none of which can unilaterally manipulate the results. We've added decentralized oracle infrastructure to Creditcoin, ensuring institutional-grade security for third-party cross-chain apps and services.

<figure><img src="/files/fZBD4FRB08dBIM00dqyk" alt=""><figcaption></figcaption></figure>

Those apps and services are secured using **Universal Smart Contracts** : contracts which leverage the Creditcoin oracle to execute business logic spanning any number of chains. Operating across many chains simultaneously integrates their isolated pools of information and capital, opening up new powerful business use cases.\
\
This video provides a comprehensive first look into Universal Smart Contracts :

{% file src="/files/QyqsMzGI5MYGTG1K4BVW" %}

## **What use cases benefit from cross chain interoperability?**

* **Cross chain DeFi:**
  * Automating lending, borrowing, trading, and yield farming *without intermediaries*.
  * Creating and managing cryptocurrencies, `NFT`s, and fractional ownership of real-world assets.
  * Facilitating *trustless*, automated payments and conditional fund transfers.
* **Gaming and Metaverse:**
  * Powering in-game economies, item ownership, and where appropriate, the gamification of real world interactions.
  * This is a powerful tool to influence community conscious decision making via incentivisation and fun!
* **Voting and Governance:**
  * Allowing communities to easily establish and interact with novel democratic systems.
  * Contracts can leverage digital identity and the public, immutable ledgers of blockchains to make these systems more secure and truthful than ever before.

All of these uses for blockchain become more powerful when data and liquidity across many chains are usable in one place

## **Current Decentralized Oracle Capacity**

* Verification completes in one block (\~15 seconds): Once a source chain (EX: Ethereum) block is finalized and attested on Creditcoin, the USC native verifier precompile can validate transactions from that block synchronously. Within the span of a single Creditcoin block, a foreign transaction can be validated, decoded, and used in dApp contract execution.
* Batch query verification supports up to 10 queries which share a continuity proof.


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