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Is there a way to attach my email address and bitcoin address to my eos account name? And also be able to query this data from a block explorer? Basically looking for a way to set a property value to an account name. Is this even doable without using IPFS to store this string data?

  • Yes this is doable for that you can use Demux . – Nirdesh Kumar Choudhary Nov 12 '18 at 8:04
  • will you add some bit of code to understand this easily? @NirdeshKumarChoudhary – Mr.Y Nov 12 '18 at 10:31
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If you want, you can create a smart contract to do this, which would be very much similar to the regproxyinfo contract (https://bloks.io/account/regproxyinfo). In this case, any user may send action to the smart contract with desired metadata, and the metadata will be saved into a multi-index table. When you want to query, just query the multi-index table as you want. Like: https://bloks.io/vote/proxies .

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  1. Sign a message "This is my BTC address: xxxxx" using your EOS private key

  2. Publish the signed message somewhere off-chain, you do not need to pollute blockchain itself with metadata

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    What if I wanted to pollute the blockchain with this meta data? How can this be done? How are people sending me messages currently? – Patoshi パトシ Nov 12 '18 at 19:28
  • There is no standard metadata for addresses on any blockchain, as far as I know. You are free to come up with any system. like an EOS dApp and smart contract that maintains EOS account -> Bitcoin address mappings for all users. Then you need to make this dApp popular for your use case and the problem is solved. – Mikko Ohtamaa Nov 12 '18 at 22:09

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