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With the May 4th, update to the permenant registrar, ENS intends to start opening up registrations of names shorter than 7 characters. This will start with a preregistration process, during which owners of existing DNS domains can claim the corresponding ENS name for their project. After that, an auction process will start in which anyone can bid on the newly available names, and then finally open the rest up for instant registration.
See here for more information. History Launch The ENS launched on May 4th, with a temporary registrar contract featuring a Vickrey auction design for registering domains. This started a 3-day timer for other people to place bids on the name. During this period, the details of bids were obscured: nobody could tell how much you bid, or even what name you were bidding on. If your bid was not the highest, you were refunded your bid, minus a 0.
At the end of the two day reveal period, the winner was the person who revealed the highest bid, but they only had to pay the amount of the second-highest bidder. This amount was locked up in the contract as a deposit until the permanent registrar came. Registering ENS domain names shorter than 7 characters With the May 4th, update to the permenant registrar, ENS intends to start opening up registrations of names shorter than 7 characters.
And remember, I am your sensei. The first thing to note is that everything must be in hex see appendix for more details. Numbers, strings, etc. The second thing to note is that words in Ethereum are bits. This means you need to left-pad everything with zeros to 64 characters.
The third thing to note is that types must be declared canonically in the function definition. Say what? What do I mean by canonical? Well, in Ethereum there are canonical types and shorthand types e. After that, you should get back 3 for res. You should probably read this to learn more about why you should use BigNumber s throughout your app. Okay fine, you can use the library I was talking about earlier.
I have only just shown you how to call a contract. But what if you want to write to it i. The above will not work! You need to sign a transaction with your private key, but before that, you need some ether. I like using eth-lightwallet for key management on the backend. Obligatory reminder: never share your private key, upload it to github, or publish it on Medium if there is or will ever be any money on it.
Back to the test, you can see that ether is being moved from accounts , which by default has a bunch of ether, to me. There are 3 ways to spend ether:. Also note the undeclared msg object living in your function scope. This has all sorts of neat stuff you can reference in your function.
When we call this function by sending a transaction, we are asking to update the global state of the network to say the following:. We pay him or her for this service with gas , which translates to ether. As mentioned above, gas is required to make a transaction i. If the operations cost more than what you provided, the transaction will not update the state and the miner will keep all your gas money.
If less than the gas provided is used, you are refunded the remainder. If we submit this object to the network, it will fail because there has been no proof that I am actually authorizing this transaction. Anyway, what I need to do is sign the transaction with my private key. Remember that old thing hanging out in your config file that I told you not to share with anyone? Do this with it:. Here we are using one of my favorite libraries to sign a transaction object given your private key.
This should return something like the following:. Now, finally, we can submit this to the blockchain via web3. It will return a transaction hash that is simply a hash of the transaction provided this is, very importantly, not proof that the transaction was successful! If this returns null your transaction was not picked up perhaps you signed with the wrong private key?
This means either 1. You will probably need to spend a lot of time at each step reading documentation and playing around. Welcome aboard. If you liked this article, follow me on twitter or come join the community. If you want to join our mailing list, you can subscribe here:.