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182 changes: 83 additions & 99 deletions docs/network/build/tools/oracles/dia.mdx
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Expand Up @@ -3,102 +3,86 @@ title: DIA
image: /img/socialCards/dia.jpg
---

## Request a custom oracle

[DIA](https://diadata.org/) offers customizable oracles tailored to each
dapp's needs. Each oracle can be customized in several ways, including data
sources, data cleansing filters, pricing and computational methodologies, update
mechanisms and more. This ensures that the data and oracle remain robust and
resilient to the market conditions and provide a global market price as well as
specific individual or cross-chain market prices.

By collecting billions of raw trades directly from over 90 sources, including
CEXs, DEXs, and NFT marketplaces, DIA enables full transparency, customization,
and control throughout the entire value stack. DIA's data and oracle suite
comprise price feeds for 20,000+ assets including cryptocurrencies, NFT
collections, and liquid-staked tokens, as well as random number generation and
other data feed types.

[Request a custom oracle](https://docs.diadata.org/introduction/intro-to-dia-oracles/request-an-oracle).

## Token price feeds

DIA token price feeds provide smart contracts with real-time price information
for [3,000+ cryptocurrencies](https://diadata.org/app/price), sourced
transparently from [90+ trusted, high-volume DEXs and CEXs](https://diadata.org/app/source/defi).

## Access DIA oracles

Here is an example of how to access a price value on DIA oracles:

1. Access your custom oracle smart contract on Linea.
2. Use the "Read" section on the explorer to execute the `getValue(pair_name)`
call, where `pair_name` is the full pair name such as `BTC/USD`.
3. The response of the call contains two values:
- The current asset price in USD with a fix-comma notation of 8 decimals.
- The UNIX timestamp of the last oracle update.

[Access DIA's oracle integration samples in Solidity and Vyper languages](https://docs.diadata.org/products/token-price-feeds/access-the-oracle).

## Linea demo price oracles

We have deployed the following demo oracles for the Linea community. They
provide a limited selection of cryptocurrency price feeds with predefined
configuration settings.

:::note
DIA demo oracles are not intended for use in production environments. For a
dedicated, production-ready oracle with custom price feeds and configuration
settings, [request a custom oracle](https://docs.diadata.org/introduction/intro-to-dia-oracles/request-an-oracle).
:::

### Demo oracle smart contracts

<table>
<thead>
<tr>
<th>Network</th>
<th>Contract address</th>
</tr>
</thead>
<tbody>
<tr>
<td>Linea Mainnet</td>
<td><a href="https://lineascan.build/address/0xbb5a4708302ee9d959abc417ca1280abb106ba6a">0xbb5a4708302ee9d959abc417ca1280abb106ba6a</a></td>
</tr>
</tbody>
</table>

### Included price feeds

- [DIA/USD](https://diadata.org/app/price/asset/Ethereum/0x84cA8bc7997272c7CfB4D0Cd3D55cd942B3c9419/)
- [BTC/USD](https://diadata.org/app/price/asset/Bitcoin/0x0000000000000000000000000000000000000000/)
- [USDC/USD](https://diadata.org/app/price/asset/Ethereum/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48/)

## Supported token API endpoints

DIA also supports API and GraphQL endpoints to return cryptocurrency price data.

[See all API endpoints in our documentation](https://docs.diadata.org/products/token-price-feeds/access-api-endpoints).

# 🎨 NFT floor price feeds

DIA NFT floor price feeds provide smart contracts with real-time price
information of [18,000+ NFT collections](https://diadata.org/app/floor-price),
sourced on-chain with 100% transparency from [multiple, cross-chain NFT
marketplaces](https://diadata.org/app/source/nft).

## Supported NFT API endpoints

DIA also supports API endpoints to return cryptocurrency price data. Developers
can directly access the example endpoints listed below or [visit the DIA
Documentation](https://docs.diadata.org/products/nft-floor-price-feeds/access-api-endpoints)
to see all API endpoints.

# Learn more

- [Twitter](https://x.com/DIAdata_org)
- [Discord](https://go.diadata.org/discord-menu)
- [Website](https://diadata.org/)
- [Docs](https://docs.diadata.org/)
- [Explore data](https://diadata.org/app/)
## Overview

[DIA](https://www.diadata.org/) is a cross-chain, trustless oracle network
delivering verifiable price feeds for Linea. DIA sources raw trade data directly
from primary markets and computes it onchain, ensuring complete transparency and
data integrity.

Key Features:

- Complete verifiability from source to smart contract.
- Access a wide range of data types, including price feeds for 20,000+ assets,
RWAs, fundamental feeds, and on-chain randomness
- Direct data sourcing from 100+ primary markets eliminates intermediary risk.
- Custom oracle configuration with tailored sources and methodologies.

Data products:

- Token Price Feeds: Real-time market prices for assets across CEXs and DEXs.
- Fundamental Feeds: Fair value pricing and backing data (NAV, proof of reserve,
and more).
- Real-World Asset (RWA) Feeds: Traditional financial data including Equities,
FX rates, commodities, & ETFs.
- Randomness: Verifiable random number generation for applications like lottery
and gaming.

## Querying DIA Price Feeds

:::note This is a demo oracle which is not intended for use in production
environments. Interested in a production-ready oracle?
[Contact the DIA team](https://t.me/DIAOracles_Support_Bot). :::

Call the getValue(string memory key) function on the oracle contract with the
Query Symbol (e.g., "BTC/USD"). The function returns the asset price with 8
decimal precision and the timestamp of the last update. We'll use this address
on Linea Sepolia:
[`0x533d3c1df8d238374065fb3341c34754e4bfce8e`](https://sepolia.lineascan.build/address/0x533d3c1df8d238374065fb3341c34754e4bfce8e).

```solidity
pragma solidity ^0.8.13;
interface IDIAOracleV2 {
function getValue(string memory) external view returns (uint128,
uint128);
}
contract DIAOracleSample {
/**
* @notice The DIA oracle to read from.
* Oracle Address: 0x533d3c1df8d238374065fb3341c34754e4bfce8e
* Network: Linea Sepolia
*/
address constant diaOracle = "0x...";
function getPrice(string memory key)
external
view
returns (
uint128 latestPrice,
uint128 timestampOfLatestPrice
) {
(latestPrice, timestampOfLatestPrice) =
IDIAOracleV2(diaOracle).getValue(key);
}
}
```

Please refer to
[DIA's documentation](https://www.diadata.org/docs/guides/chain-specific-guide/linea)
for the list of available price feeds.

## Request a Custom Oracle

For dApps requiring specific configurations, DIA deploys production-grade custom
oracles tailored to your requirements with configurable data sources, pricing
methodologies, update triggers, and coverage for any of 20,000+ supported
assets.

→
[Request a Custom Oracle](https://www.diadata.org/docs/guides/how-to-guides/request-a-custom-oracle)

## Resources

- Developer Support: [Discord](https://discord.com/invite/ZvGjVY5uvs) |
[Telegram](https://t.me/diadata_org)
- [Linea Integration Guide](https://www.diadata.org/docs/guides/chain-specific-guide/linea)
- [DIA Documentation](https://www.diadata.org/docs)