> For the complete documentation index, see [llms.txt](https://orc20protocol.gitbook.io/orc-20-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://orc20protocol.gitbook.io/orc-20-protocol/nirvana-upgrade.md).

# Nirvana Upgrade

{% hint style="success" %}
ORC-20 Nirvana Upgrade has been **successful**! However, we kindly ask for your patience as the minting service providers, index providers, and other services associated with ORC-20 gradually update to the new version.
{% endhint %}

## Overview

The Nirvana Upgrade represents a significant milestone for ORC-20 Protocol. During the past 6 months, Ordinal Theory has grown dramatically, same as BRC-20. We would update and migrate the old version of ORC-20 Protocols, to consolidate the key features which were created in April, 2023.

<figure><img src="/files/A875ZXtzp4BbTk73TqFb" alt=""><figcaption></figcaption></figure>

### Snapshot

* [x] The snapshot will be taken for all the ORC-20 assets at block height `#818418`. The indexing services for ORC-20 are primarily provided by Geniidata and 20Scan.&#x20;

{% embed url="<https://github.com/ORC-20/snapshot>" %}
snapshot file
{% endembed %}

#### Notes

Please refrain from transferring any ORC-20 assets when the snapshot block approaches, which means any pending transferring at block height `#818418` wouldn’t be migrated to the Nirvana Upgrade.

You can only see the amounts on the Nirvana Upgrade supported indexers after the snapshot.

### Genesis Launch

* [x] The Nirvana Upgrade is scheduled to be executed at block height `#818419` (one block after the snapshot) . Therefore, any deployment, minting, transfer, and other operations prior to the Genesis Launch will be considered invalid.

### Upgrade Summary

1\. Improved inscription format for greater adaptability to support the BTC DeFi integration.

2\. Removing unnecessary fields and introducing the essentials for broader use cases.

3\. Introducing stablecoin support, catering to issuers like USDT and USDC.

4\. Simplified transfer process utilizing the proven BRC-20 transfer model.

5\. Shifted from centralized to decentralized reward mechanisms to encourage more developers to join the ORC-20 ecosystem.

6\. Adding OTC feature (valid after block `#819469`) for native atomic swaps and ORDER-BOOK (valid after block ~~`#820519`~~ #826294.) for AMM similar to Uniswap V3.

7\. Established clear indexing rules for developers' convenience.

8\. Fixed some bugs.