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8 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.
Korshan's user avatar
  • 81
6 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 ...
Richard Horrocks's user avatar
5 votes
Accepted

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: ...
Roland Kofler's user avatar
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 [email protected]
DirtStats's user avatar
  • 666
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 @...
BokkyPooBah's user avatar
  • 40.3k
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 ...
Roland Kofler's user avatar
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 ...
Stefan Richter's user avatar
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 ...
Ismael's user avatar
  • 30.5k
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 ...
tayvano's user avatar
  • 16k
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 ...
eth's user avatar
  • 86.1k
2 votes

Presale tokens / Mist / password denied

Have you tried using your presale password for account 2?
BokkyPooBah's user avatar
  • 40.3k
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 ...
Dennis Peterson's user avatar
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 ...
max taldykin's user avatar
  • 2,966
2 votes
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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
Sujith Somraaj's user avatar
2 votes
Accepted

Call a specific function in a contract at a specific block

myContract.methods.methodName().call(transactionObject, blockNumber, callback) No, it is not the way to do it. The block number in RPC methods is meant for historic purposes only, not to execute ...
Nulik's user avatar
  • 4,061
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 ...
Zenos Pavlakou's user avatar
1 vote

ICO Site Development, When should I transfer tokens to investors

Most ICO projects have a timelock of at least 6 months or more. In the meantime they prepare filling their liquidity pool with raised funds to give their tokens real value and make it tradeable on DEX ...
DevGru777's user avatar
1 vote
Accepted

Ethereum Presale Wallet

Inside your wallet.json file you will see the following values: { "encseed": "97...d4", "bkp": "d7...b3", "ethaddr": "df...e7", &...
Alkhara's user avatar
  • 26
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 ...
Trevor Lee Oakley's user avatar
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 =...
j j's user avatar
  • 123
1 vote
Accepted

ETH transactions to presale contract keep failing

The error message Bad instruction and the gas consumption equal to gas limit 1,000,000 indicates the problem was caused by an assert or low level error like array out of bound access. Looking at the ...
Ismael's user avatar
  • 30.5k
1 vote

Smart contract function throwing error in remix

As your function call is reverting, it has to be caused by one of the require statements somewhere in the contracts. If you are really deploying your contract with the parameters shown in the picture,...
Lauri Peltonen's user avatar
1 vote

Token distribution and Smart Contract

How crowdsales typically work is that you have (at least) two different contracts: the actual token contract and the crowdsale contract. The crowdsale contract then has some sort of an access to the ...
Lauri Peltonen's user avatar
1 vote

ICO Token sale payment process

They mostly proceed that off contract, with payment processor and manually or with a bot task sending the token back when the payment is confirmed. Check that, it's the best post in my opinion about ...
btc4cash's user avatar
  • 538
1 vote

Why pre ico sites have login pages

Many teams create a presale website for people to signup so they can get info from the potential contributors, and also as a means to do the corresponding KYC/AML to comply with regulation. Most time,...
pabloruiz55's user avatar
  • 7,676
1 vote

Moved presale ether after the fork how do I split?

You can use the Classic Ether wallet to access Ether with your original wallet. Since you moved your Ether after the fork, the ETC will still be there (as you mention). Other wallets are available if ...
Nicolas Bernard's user avatar
1 vote

sending messages to a contract using geth

The function of buyToken called by fallback function. So you must trigger fallback function, as follows on geth console: eth.sendTransaction({from:eth.coinbase,to:addrtoken.address,value:10}) About ...
BinGoBinBin's user avatar
  • 2,161
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 ...
user8812's user avatar
1 vote

Can I find out ethereum address?

Open the wallet with notepad and you will find on the end "ethaddr":your address.
josip's user avatar
  • 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 ...
tayvano's user avatar
  • 16k

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