Crypto Collectibles Series - Cats · Punks
Code on the Blockchain - Electronic Contract Scripts
Etherscan
- CryptoPunkMarket, see contract address
0xb47e3cd837ddf8e4c57f05d70ab865de6e193bbb, June 22, 2017 07:40:00 PM (Block #3914495)
For more see Inside the CryptoPunksMarket Blockchain Contract / Service »
Etherscan
- WrappedPunk (WPUNKS), see contract address
0xb7f7f6c52f2e2fdb1963eab30438024864c313f6, September 8, 2020 03:11:25 PM (Block #10821737)
For more see Inside the Wrapped Punk (WPUNKS) Blockchain Contract / Service »
When CryptoPunks launched, the contract was exploitable. Sellers didn't get paid. LarvaLabs quickly launched a fixed version of the contract, which everyone uses.
But the V1 tokens are still out there.
Etherscan
- CryptoPunks, see contract address
0x6Ba6f2207e343923BA692e5Cae646Fb0F566DB8D, June 9, 2017 12:22:50 AM (Block #3842489)
Etherscan
- PunksV1Wrapper (WPUNKS1), see contract address
0xf4a4644e818c2843ba0aabea93af6c80b5984114, March 25, 2021 04:26:43 AM (Block #12105923)
Etherscan
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CryptoPhunks (PHUNKS), see contract address
0xa82f3a61f002f83eba7d184c50bb2a8b359ca1ce, June 14, 2021 04:18:53 AM (Block #12630376) -
CryptoPhunksV2 (PHUNKS), see contract address
0xf07468ead8cf26c752c676e43c814fee9c8cf402, June 21, 2021 12:07:08 AM (Block #12674389)
Etherscan
- HDPunks (HDPUNKS), see contract address
0x3e86e26915403ae0e1cff7e7b23377b3a30104a0, June 29, 2021 09:52:03 PM (Block #12731429)
web: cryptozunks.com
CryptoPunks were the first 10,000. CryptoZunks are the last 10,000.
Numbered 10,000 - 19,999, Zunks are the first Punks to be generated on-chain with randomized attributes. Spin to mint your base model Zunk and re-roll any attributes.
How does on-chain generation for Zunks work? How do we keep Zunks unique from existing Punks?
CryptoZunks is the first on-chain Punks derivative project where the smart contract generates all the attributes randomly on-chain when the user mints. How does this work?
After determining what attributes the Zunk has, we create a string representation of the Zunk which can be decoded into the various attributes (gender, hat, beard, etc.).
This string representation of the Zunk is then saved on the blockchain. On subsequent Zunk mints, the contract validates that it hasn't generated a same Zunk that already exists. If it has, the contract will re-generate random attributes until it has created a unique Zunk.
There are optimizations built into the contract to re-generate a Zunk as few times as possible. It's important that users aren't stuck endlessly generating invalid Zunks and to keep gas usage low.
We've run thousands of simulations and have validated that we can reliably generate 10k unique Zunks Partying face
We also wanted to guarantee that the generated Zunk doesn't match an existing Punk. We took all 10k Punks, converted them into our string representation, and seeded the contract with these Punks so that the contract may validate against them.
Now when the contract generates a Zunk or a user rerolls an attribute, the contract will validate that it does not match any existing Zunks or Punks. After the Zunk is confirmed to be unique and minted, the contract emits an event of the string representation of the Zunk.
Our goal is to innovate and to bring a unique and fun minting experience that gives some power to the user, while still upholding the ethos of decentralization. Every Zunk is randomly generated on chain, your Zunk's destiny is in your hands!
-- Amanda
All 10,000 Zunks have been minted! A lot of dizziness from all of the spins today.
-- CryptoZunks, Aug 8, 2021
Commentary: The devs are raking in at least $1.35 million dollars with the mint of 10,000 Zunks and will of course profit a substantial amount of all future sales.
Etherscan
- CryptoZunks (ZUNK), see contract address
0x031920cc2d9f5c10b444fd44009cd64f829e7be2, August 7, 2021 04:01:17 AM (Block #12975638)