🎁Wrapping Old Curio Cards

Curio Cards are early crypto art which pre-date NFTs and are therefore incompatible with modern platforms like OpenSea. To make trading Curio Cards possible, a “wrapper” contract was created in 2021 through a joint effort by the community and members of the original Curio team.

Heads up: if you bought your cards on OpenSea, they are already wrapped and you don't need to do anything else.

Any cards shown as "minted" on OpenSea are just old cards being wrapped to make them compatible for trading. No new Curio Cards can ever be minted outside of the existing original supply from 2017.

What is a Wrapper Contract?

A wrapper contract is a compatibility tool, nothing more. You can think of it like a collector's sleeve, which old Curio Cards are placed inside of, so they can be accessed on NFT platforms like OpenSea (using the new ERC-1155 token format).

(For the technical history lovers: the ERC-1155 Standard improves on the Ethereum ERC-721 Standard that defined modern NFTs in 2018 and referenced the 2017 Curio Cards project. Although Curio Cards are ERC-20 tokens, they are actually semi-fungible in nature, but wrapping them makes them compatible with the ERC-1155 Standard.)

Modern NFT collectors don't need to worry about wrapping or unwrapping their Curio Cards; the wrapper tool exists to help people with native 2017 Curio Cards. When an old Curio Card is wrapped, it will show up on OpenSea as "minted," but this just means an old card is being made available to trade on OpenSea for the first time.

How do I Wrap/Unwrap my cards?

The wrapper tool for the official wrapper contract is accessible at wrap.curio.cards (and wrap.curio.cards/17b for the forgotten card 17b.) We recommend watching this short (1:32) video guide before using the wrapper:

I see other wrappers for Curio?

Anyone can create a wrapper contract — it is just a smart contract that accepts cards. It does not require permission or approval from the original Curio Cards team to deploy.

That also means there is no guarantee of audits, security, or support for a 3rd-party wrapper.

Since they were not reviewed by the core team, this documentation does not officially endorse any 3rd-party wrapper contracts. Some of them are fine to use, but be careful and check with others in the Curio Discord before using a 3rd-party wrapper.

Using an unsupported wrapper should be considered a "Curio Experts Only" activity. For an example of a 3rd-party wrapper gone bad, in 2021, someone made a buggy wrapper that prevents cards from unwrapping, locking those cards forever. There is no way to disable this locking wrapper.

The official wrapper (as seen in the video above) was reviewed by an external solidity auditor and has been extensively tested and used, and is the recommended option for all Curio Cards collectors.