Thread by @muneeb

Back on Twitter after a week of disconnecting from it 👋

It looks like @AriDavidPaul is giving $1M in cash to someone who can implement CryptoKitties on Bitcoin.

Here is how to build that👇

1/ The straightforward way to do this would be to use SIP-009 that defines NFTs on Stacks. However, you’d be paying gas fees in Stacks (not Bitcoin).

Apps like boom.money already do this.

Link: github.com/stacksgov/sips…

2/ One can argue that these NFTs “settle on Bitcoin” but are not “on” BTC.

Fair enough.

Stacks recognizes pure Bitcoin transactions for transfers/ownership, i.e., pay a gas fee in BTC.

How to use that in CryptoKitties?

3/ You can have an alternative implementation to SIP-009, where you color one STX to mint one CryptoKitty.

This converts the STX from a fungible token to a non-fungible token (NFT).

Now you can use pure Bitcoin transactions to transfer the ownership of such a CryptoKitty.

4/ You can also write the logic in the Clarity contract where it can understand pure Bitcoin transactions for biddings.

The Clarity contract can give a Bitcoin address for an auction and programmatically select the highest BTC bidder as the winner.

5/ At this point, the CrypoKitty is:

- Owned by a Bitcoin address.
- Transfers ownership through pure Bitcoin transactions.
- You can bid in an auction using direct BTC transactions.

A full Bitcoin CryptoKitty!

P.S: Ari’s offer, I’m told, is no longer valid. Oh well 😄