ggomma / contracts

Inside the CryptoKitties, MoonCats & Friends Blockchain Contracts / Services incl. Wrapped CryptoKitties (WCK, WG0, WVG0), Wrapped MoonCatsRescue (WMCR)

Crypto Collectibles Series - Cats · Punks

CryptoKitties, MoonCats & Friends Blockchain Contracts / Services

Code on the Blockchain - Electronic Contract Scripts

CryptoKitties • CryptoCats • MoonCats • MarsCats

CryptoKitties

/cryptokitties - Core CryptoKitties

Etherscan

• KittyCore, see contract address 0x06012c8cf97bead5deae237070f9587f8e7a266d

The genetic combination algorithm is kept seperate so we can open-source all of the rest of our code without making it too easy for folks to figure out how the genetics work. Don't worry, I'm sure someone will reverse engineer it soon enough!

-- Commentary from the CryptoKitties source code

Update 2019 The sooper-sekretoo GeneScience contract with the "magic" mixGenes function is now open source with inline running commentary. Thanks!

• GeneScience, see contract address 0xf97e0a5b616dffc913e72455fde9ea8bbe946a2b

The auctions are seperate since their logic is somewhat complex and there's always a risk of subtle bugs. By keeping them in their own contracts, we can upgrade them without disrupting the main contract that tracks kitty ownership.

-- Commentary from the CryptoKitties source code

• SaleClockAuction, see contract address 0xb1690c08e213a35ed9bab7b318de14420fb57d8c
• SiringClockAuction, see contract address 0xc7af99fe5513eb6710e6d5f44f9989da40f27f26

For more see Inside the CryptoKitties Blockchain Contracts / Services »

/cryptokitties-wrapped - Wrapped CryptoKitties (WCK, WG0, WVG0)

$WCK wrapped cryptokitties; its actually backed by a digital cat; where as other coins are backed by hot-air.

Etherscan

• WrappedCK (WCK), see contract address 0x09fe5f0236f0ea5d930197dce254d77b04128075
• WrappedG0 (WG0), see contract address 0xa10740ff9ff6852eac84cdcff9184e1d6d27c057 - Gen 0 Variant
• WrappedVG0 (WVG0), see contract address 0x25c7b64a93eb1261e130ec21a3e9918caa38b611 - Virgin Gen 0 Variant

For more see Inside the Wrapped CryptoKitties (WCK, WG0, WVG0) Blockchain Contracts / Services »

CryptoCats

Cute little 8-bit cats on the Blockchain. Launched v3 in December 2017 with 625 vintage non-fungible tokens (NFTs), pre the ERC721 standard.

/cryptocats - CryptoCatsMarket

Etherscan

• CryptoCatsMarket, see contract address 0x088c6ad962812b5aa905ba6f3c5c145f9d4c079f

For more see Inside the CryptoCats Blockchain Contract / Service »

MoonCats

MoonCatRescue is an exploration of user-discoverable blockchain assets. Users "mine" for MoonCats in their browser. After MoonCats are "mined", they can be put up for adoption, adoptions can be requested, they can be given away, and they can be permanently named.

Launched in August 2017 with 25,600 non-fungible tokens (NFTs) to rescue, pre the ERC721 standard.

/mooncats - MoonCatRescue

Etherscan

• MoonCatResuce, see contract address 0x60cd862c9c687a9de49aecdc3a99b74a4fc54ab6

For more see Inside the MoonCatRescue Blockchain Contract / Service »

/mooncats-acclimated - MoonCatAcclimator

MoonCat​Acclimator

• accepts an original MoonCat and wraps it to present an ERC721- and ERC998-compliant asset
• accepts a MoonCat wrapped with the older wrapping contract (at 0x7C40c3...) and re-wraps them

Etherscan

• MoonCatAcclimator, see contract address 0xc3f733ca98E0daD0386979Eb96fb1722A1A05E69

For more see /mooncats-acclimated »

/mooncats-wrapped - MoonCatsWrapped - Wrapped MoonCatsRescue (WMCR)

Wrapped MoonCats Rescue is an unofficial ERC721 wrapping of the MoonCats Rescue contract.

Etherscan

• MoonCatsWrapped - Wrapped MoonCatsRescue (WMCR), see contract address 0x7c40c393dc0f283f318791d746d894ddd3693572

For more see Inside the Wrapped MoonCatsRescue (WMCR) Blockchain Contract / Service »

/mooncats-helper - MooncatHelper

Atomic buy-and-wrap contract to transform mooncats for sale in the adoption center into Wrapped Mooncats in a single transaction [for a 0.01 ETH fee].

Etherscan

• MooncatHelper, see contract address 0x9aa3d159eb155305a11af921696576a3e195d24d

/mooncats-vote - MoonCatKeyVote

Should the MoonCatRescue developers destroy their private key so that no future Genesis MoonCats can ever be released? Yes / True or No / False

Update:

The vote is live - please vote!

Any address that has interacted with either the MoonCatRescue contract (0x60cd862c9c687a9de49aecdc3a99b74a4fc54ab6) or the main Wrapped MoonCatsRescue contract (0x7c40c393dc0f283f318791d746d894ddd3693572) prior to Block 12047300 (Mar-16-2021 03:35:24 AM +UTC) will get one vote.

Update:

The community has spoken. With a final outcome of YES: 944 NO: 367, the devs will destroy their private key to the MoonCatRescue contract. The contract will be left as found. The remaining Genesis MoonCats will never be released and will continue to live happily on the moon.

Etherscan

• MoonCatKeyVote, see contract address 0x1916F482BB9F3523a489791Ae3d6e052b362C777

For more see /mooncats-vote »

Ponderware is destroying the private key controlling the MoonCatRescue contract due to the outcome of the vote contract.

This contract represents a public transfer of the official ponderware address. To ensure confirmation and get ponderware's new address, call the whereIsPonderware function.

• PonderwareTransferOfAuthority, see contract address 0xa3843c6f47384e3ca951bd0207179f58d2179d3f

/mooncats-hd - High-Definition (HD) Mooncats (HDMC)

Mooncats a little low-res [~24x24 pixels]? Now admire them in all their beauty. Each Mooncat owner (unwrapped & wrapped) can mint the [High-Definition] HD version of their cats.

Price to mint follows the bonding curve:

• 0-999: 0.01 eth
• 1000-4999: 0.05 eth
• 5000-14999: 0.10 eth
• 15000-24339: 0.20 eth

Etherscan

• HDMooncats (HDMC), see contract address 0xd1b01ea07981a40907f6b8f472cc8f37066dfea7

For more see /mooncats-hd »

MarsCats - MoonCats "Remake" on Binance (Ethereum) Smart Chain

Wow. You guys are awesome! All [25 600¹] cats has been rescued [in 24 hours]!

Private key to access MoonCatRescue contract has been burned. That means 160 genesis cats will be forgotten forever. But, what if you can release all of the genesis cats? Wonder how cute they will look like? Go find and rescue them on MarsCatRescue.

¹: Minus the 256 possible released genesis cats.

/marscats - MarsCatRescue

Bscscan

• MarsCatResuce, see contract address 0xd31bad66aefa525b808ee569a514f6345b0bea2d

For more see /marscats »