Rarible lists (on https://rarible.com/contracts.txt):

RC721Sale Contract - 0x131aebbfe55bca0c9eaad4ea24d386c5c082dd58
ERC1155Sale Contract - 0x93f2a75d771628856f37f256da95e99ea28aafbe
ERC721 Nonce Holder Contract - 0xefaefa82be8e827a15c9989417a19107ac9d54af
ERC1155 Nonce Holder Contract - 0x295fe6bc5ad4bdb770d416c066626e4207e10339
Transfer Proxy Contract - 0x4fee7b061c97c9c496b01dbce9cdb10c02f0a0be
Rari mine - 0x3b5d2b254224954547a33cbf753bcaa5eb4b27bd

But on the site I see this address associated with ERC-1155 items created Raribles:


Another pseudorandom example:

This is the creator:


Of this contract:


How can I determine if the creator is Rarible/OpenSea/Decentraland/CryptoKitties/etc?

Thank you in advance if you are able to respond (even to say and link to a dup).


If you have a smart contract address you can see its creator's address. But beyond that you have very little information inside the blockchain.

To answer questions such as "how can I know whether contract X is the real contract for project Y", basically the only way is to go to the website of project Y and see if they have listed their contract address(es) - most likely they have.

The other way around is trickier: to find out which entity has launched a contract. You can try to look at the transactions from the creator address and analyze them in some way, or you can try googling for the contract/creator address and see if something comes up.

Various external services, such as Etherscan, provide some extra information, but this is centralized data and in theory it shouldn't be trusted.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.