# Changelog #2

By [Lett3r](https://paragraph.com/@lett3r) · 2023-02-21

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Hey there, Beta testers!

We are excited to introduce our **second platform update**, which addresses a key aspect of blockchain technology - **Approvals**. This update marks a significant **milestone** in our quest to help you feel **secure** **in your transactions** and build **trust in the blockchain**. Let's take a closer look at the changes.

Approvals
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Approvals play a crucial role in blockchain technologies by **safeguarding** your wallet **from unauthorized access**. Smart contracts **cannot access** your cryptocurrencies or NFTs **without your explicit approval**.

The most common transactions that require token approval are **token swaps** and **NFT listings**. In token swaps, you need to **authorize the DEX**, such as Uniswap or Sushiswap, to **use the tokens** you are sending. In NFT listings, **you must permit the Marketplace**, such as OpenSea or LooksRare, to **send the NFT** you are selling to the buyer.

![Example of Approval](https://storage.googleapis.com/papyrus_images/cb61e29b25f8029da13acbf683ced8624164561d9c6d5a3514ace09cb3417954.png)

Example of Approval

We are adding support for **ERC-20 and ERC-721 Approval** events and **ERC-721 and ERC-1155 ApprovalForAll** events. You will receive an e-mail notification every time you approve a smart contract to use your tokens.

Improvements and Fixes
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This release also includes:

*   Aliases for the most common smart contracts
    
*   Improved support for tokens metadata
    
*   Minor bug fixes
    

What’s next?
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Next release will be centered on **richer smart contracts metadata**. We will provide more information about the smart contracts you interact with. This change will help you to verify whether the results of your transactions align with your expectations.

Feedback
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Thank you for your **positive feedback** so far! Please continue to share your thoughts by responding directly to our e-mails. We are eager to hear what you think!

Thank you again for being a part of Lett3r's Private Beta! Please **share your experience** with your friends. The more people who test our platform, the better Lett3r will be.

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*Originally published on [Lett3r](https://paragraph.com/@lett3r/changelog-2)*