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13 votes

I bought ether in the presale. Is there a time limit to claim that ether?

There is no time-limit to claim (i.e. import) your ether. Your ether can remain in your presale wallet indefinitely, and do not need to be claimed/imported until you are ready to use them. Ethereum ...
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12 votes

How do I import my presale wallet?

Using Mist (Update 27th of February 2016) It is now possible to import your pre-sale wallet in the official Mist wallet, version 0.4.0 and up. No more command line interface required. To import your ...
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  • 1,775
10 votes

How do I import my presale wallet?

It depends on what you want to do with the ethers held in your presale wallet account. Keys Just to clarify what keys you have, here is a example of a set of keys: Unencrypted private key: ...
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7 votes

What was the approximate cost of 1 ETH during pre-launch (Aug 2014)

1 Bitcoin got you 2000 ETH and at the time 1 Bitcoin was somewhere around $500 - $600, but you can check that bit.
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  • 71
6 votes

How do I import my presale wallet?

The easy way Kraken has a super easy tool for importing presale wallets, and it's super convenient if you want to be able to trade the ether. There's another similar tool here The safe way If you ...
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  • 34.4k
6 votes
Accepted

How many pre-sale addresses are there?

8893 I got this number using the genesis block that I created myself using the instructions in this blog post. I generated the JSON file, imported it into a NodeJS REPL and queried the length of the ...
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  • 34.4k
5 votes
Accepted

What does presale mean in Ethereum?

The presale ran from 22nd of July 2014 to 2nd September 2014. This was before the general public launch of the network. For the first couple of weeks, 2000 ETH cost 1 BTC. Thereafter, your 1 BTC ...
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5 votes
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What was the approximate cost of 1 ETH during pre-launch (Aug 2014)

The Ethereum presale took place from Tuesday, 22 July 2014 to Tuesday, 2 September 2014 (42 days). 22 July to 5 August 2014: 2000 ETH = 1 BTC = 572-632 USD 6 August to 2 September 2014: ...
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4 votes

Hashes per Ether, before and after PoS

The number of hashes depends on the number of miners that partecipate in a lottery to win the Ether fee. Therefore you can not have a number NoHashes/Eth. The hashing is a way do have a distributed ...
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4 votes

How to recover presale wallet password from mnemonics

Are you aware of the bug in the Mist wallet? It is exactly what you explained or did I misunderstand? If you are confident you are entering the correct pass then its likely the bug. users reported a ...
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4 votes
Accepted

What email address were pre-sale wallets sent from?

Just found the answer in the comments of another post: It will be an email from confirmation@sale.ethereum.org
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  • 656
4 votes

Error sending transaction to the First Blood crowd sale contract

Summary The reason why you got the error message is because the crowd sale has ended as the funds raised reached the maximum cap of 465,313 ethers within minutes after the crowd sale commenced. As @...
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4 votes
Accepted

Why does mist block importing accounts when a geth node is already running?

Security reasons. As you drop a file, not the privKey, there would be a file transfer via rpc. Even though it is a very low risk, there is a risk. Furthermore, the import function of geth (e.g. geth ...
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3 votes

Where to find ICO contract with linear / logarithmic decrease?

Let's suppose we have M the maximum amount of tokens to sell, I the initial price of each token and F the final price of each token. Let's call f the function that gives the price of each token, we ...
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  • 29.5k
3 votes

What happened with the presale ether after the fork?

The Ether will still be in your Ether address. Yes, you will have both ETC and ETH. If there are any other forks that use the genesis block from the Ethereum presale, you will have all those Ether ...
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  • 78.7k
3 votes

What is the bkp component in a presale JSON file?

No. Your bkp is not the SHA3 of your password. It's really quite simple. In the beginning, god said genwallet and... genwallet says: genwallet(opts['seed'],pw,email) You say "here's my email ...
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  • 15.2k
3 votes

I bought ether in the presale. Is there a time limit to claim that ether?

There is no time limit as the pre-sale wallet essentially is storing your private key. However, you might be better off converting to the current keystore format (the one used by geth) in order to ...
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  • 2,469
3 votes

How do I import my presale wallet?

Unfortunately, it appears you didn't follow instructions by keeping the json wallet file. If you only have the password, your ether is lost, as clearly stated in ether sale documentation, ...
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  • 78.7k
3 votes

How do I import my presale wallet?

I like using this tool - make sure you're on the right site and there's a green lock on the address bar - learn some coding if you want to use the safe way: https://www.myetherwallet.com/ It's ...
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  • 4,628
3 votes

How to recover presale wallet password from mnemonics

If you have the right private key (and from the looks of being 64 hex characters or 32 bytes it seems right), then you do not need anything else. Just import that into any client and you should be ...
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  • 2,469
2 votes

Presale tokens / Mist / password denied

Have you tried using your presale password for account 2?
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2 votes

Bought Ether from ethereum presale (genesis) Forgot password

No. From the Ethereum presale message: You are about to make an ether purchase. Please keep the attached wallet file safe. It will serve as a cryptographic receipt of your purchase, along with your ...
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  • 2,896
2 votes

Presale wallet gives zero funds

This doesn't appear to be your correct address. I checked on etherscan and it shows no transactions in this address at all. A valid presale address should show the initial balance plus any subsequent ...
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2 votes

Minting Tokens and OnlyOwner - ERC20

If you have taken the contracts from Zeppelin Solidity, then there should be a contract called Ownable. In that contract there is a modifier called onlyOwner and the contract should look something ...
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2 votes
Accepted

what is the unit in ICO?

So the math is as follows, 1 coin = 1 * 10**3 = 1000 So 1 coin for 1 wei = 1000 coins for 1 wei since the coin is of 3 decimals. Hope this answers your question
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1 vote

ERC20 Presale Contract and Data Field

I guess I have an answer to my question without anyone responding here - // fallback function to buy tokens function () payable { buyTokens(msg.sender); } A fallback is used when the code ...
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1 vote

Where to find ICO contract with linear / logarithmic decrease?

Solidity code based on the solution by @Ismael, assumes linear increase in price. // tokens sold uint256 tokensSold; // tokens to be sold in total uint tokensToBeSold = 100000000*(10**18); uint ip =...
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  • 123
1 vote

GUI Ethereum just closes and does not import presale JSON wallet

I wasn't able to use the Ethereum wallet I tried on my mac and PC. I upgraded mist and ethereum wallet sync'ed nodes. Nothing worked. As a last resort I used https://www.myetherwallet.com it ...
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1 vote

Can I find out ethereum address?

Open the wallet with notepad and you will find on the end "ethaddr":your address.
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  • 21
1 vote

Need to prove quantity/date of Ether Pre-Sale purchase for tax reasons

If you have your Ether presale file (the JSON file before it was a keystore file) it has the BTC address (labeled as BtcAddr) that made the purchase. Make a copy of your presale file, open it in ...
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  • 15.2k

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