> ## Documentation Index
> Fetch the complete documentation index at: https://kleros-mintlify-6ebc7975.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Curate V1

> Kleros Curate V1 documentation: Classic Curate and Light Curate registries on Ethereum Mainnet, with crypto-economic incentives and Court arbitration.

# Curate V1

<Note>
  Curate V1 is production-proven on Ethereum L1 and remains active for web3 integrations. A V2 version is available: [Curate V2](/products/curate) on Arbitrum.
</Note>

Curate V1 is the original decentralized registry application deployed on Ethereum Mainnet. It enabled anyone to create and maintain community-curated registries (Token Curated Registries / TCRs) with crypto-economic incentives and Kleros Court dispute resolution.

***

## V1 Architecture

Curate V1 came in two variants:

**Classic Curate**: Stored all item data directly in contract storage. Offered maximum flexibility and on-chain queryability, but with higher gas costs (storage costs scaled with item count).

**Light Curate**: Stored only the item's IPFS multihash in the contract, with full item data indexed via The Graph's subgraph. Significantly cheaper to deploy and use (\~700k gas for new TCR deployment vs \~7 million for Classic, using EIP-1167 minimal proxies).

Most production registries used Light Curate for cost efficiency. V2 continues this approach.

***

## Key Registries (V1)

* **Token Registry (T2CR)**: Verified token submissions used by wallets and exchanges
* **Address Tags Registry**: Human-readable labels for Ethereum addresses, used by block explorers
* **CDN Registry**: Token logos and metadata served to dApps

These registries were the data layer behind [Kleros Scout](/products/scout).

***

## Migration

V2 Curate is deployed on Arbitrum with lower gas costs and the same TCR mechanics. Existing V1 registries remain accessible.