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2 votes
1 answer
73 views

Duplicating data on server and contract

If I'm building a dapp, is it worthwhile to store information that is in the contract on a server for speed purposes, and only using the contract to track ownership of tokens. I.e. for something ...
user33938's user avatar
1 vote
2 answers
664 views

Why does sign transaction pops up in cryptokitties?

I did some web3.js projects and also worked with MetaMask. But I've never seen this window popping up in MetaMask - as it does when signing up for cryptokitties. Confirm Transaction Sign Message ...
kn1g's user avatar
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