Automatically merged updates to draft EIP(s) 721

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 - It only modifies existing draft EIP(s)
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EIPS/eip-721.md

@@ -360,12 +360,16 @@ The `onERC721Received` function specifically works around old deployed contracts
 
 ## Test Cases
 
-**TO DO**
-
-Test cases for an implementation are mandatory for EIPs that are affecting consensus changes. Other EIPs can choose to include links to test cases if applicable.
+0xcert ERC-721 Token includes test cases written using Truffle.
 
 ## Implementations
 
+0xcert ERC721 -- a reference implementation
+
+- MIT licensed, so you can freely use it for your projects
+- Includes test cases
+- Active bug bounty, you will be paid if you find errors
+
 Su Squares -- an advertising platform where you can rent space and place images
 
 - Complete the Su Squares Bug Bounty Program to seek problems with this standard or its implementation
@@ -417,6 +421,7 @@ XXXXERC721, by William Entriken -- a scalable example implementation
 **NFT Implementations and Other Projects**
 
 1. CryptoKitties. https://www.cryptokitties.co
+1. 0xcert ERC-721 Token. https://github.com/0xcert/ethereum-erc721
 1. Su Squares. https://tenthousandsu.com
 1. Decentraland. https://decentraland.org
 1. CryptoPunks. https://www.larvalabs.com/cryptopunks