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Questions tagged [presale]

the sale of tokens prior to the official launch of an Initial Coin Offering (ICO)

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21 votes
5 answers
13k views

How do I import my presale wallet?

I purchased ether during the presale. Is there an easy way to import those ether and start using them?
Ethan Wilding's user avatar
11 votes
2 answers
1k views

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

There is no mention in the documentation about whether I have to claim ether before a particular date. Is there a time-limit on claiming ether? I've also heard that the mining algorithm will change at ...
Ethan Wilding's user avatar
9 votes
2 answers
19k views

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

The ETH pre-launch allowed people to exchange Bitcoins for ETH at a determined value. What was this exchange rate in USD? E.g. 1 Bitcoin got you X Eth, which was worth about $Y.
makerofthings7's user avatar
7 votes
1 answer
3k views

What does presale mean in Ethereum?

I have seen a lot of discussions about presale wallets, but have no idea what it means. What do the terms "presale" and "presale wallet" mean in Ethereum?
jeff's user avatar
  • 2,550
6 votes
2 answers
2k views

How to recover presale wallet password from mnemonics

I have the following stored in my secure password manager from the presale: A 40-character hexadecimal address A 64-character hexadecimal private key A list of 24 mnemonic words Something I called "...
cayblood's user avatar
  • 381
6 votes
0 answers
1k views

How to install the Python bitcoin module on windows for presale wallet import?

I've been holding Ethereum since the pre-sale. I want to continue to just hold my presale wallet because its safe as cold storage (rather than importing into my wallet). However, I want to be able to ...
inthepixels's user avatar
5 votes
1 answer
629 views

How many pre-sale addresses are there?

How many addresses did Ethereum have when it launched? In other words, how many pre-sale addresses are there?
Randomblue's user avatar
  • 2,620
5 votes
2 answers
786 views

Where to find ICO contract with linear / logarithmic decrease?

I had a look at some existing crowdsale contracts: https://github.com/aragon/aragon-network-token/blob/master/contracts/AragonTokenSale.sol https://github.com/sonm-io/presale-token/blob/master/...
Mars Robertson's user avatar
4 votes
1 answer
242 views

Error sending transaction to the First Blood crowd sale contract

I have sent ether to First Blood crowd sale but have an error message: Warning! Error encountered during contract execution [Bad jump destination] I don't know what to do, please advice me.
Gnanenth's user avatar
4 votes
1 answer
967 views

What is the bkp component in a presale JSON file?

Is the "bkp" component of a presale json file a SHA3 hash of the wallet password?
Karza's user avatar
  • 51
4 votes
1 answer
436 views

What happened with the presale ether after the fork?

I have never accessed my presale ether. As I understand, a major fork occurred some time ago. I have some confusion regarding the current situation. What will happen to my ether? Do I get both ETC ...
Bernal's user avatar
  • 41
4 votes
1 answer
141 views

Presale tokens / Mist / password denied

My question pertains to my mist wallet and some presale tokens that I successfully imported into the wallet. Before importing the presale tokens, I successfully created the wallet, received and sent ...
Jefe's user avatar
  • 41
4 votes
1 answer
142 views

What fraction of pre-sale coins have been moved?

I am trying to estimate how many of the pre-sale coins are in circulation. What fraction of pre-sale coins have been moved?
Randomblue's user avatar
  • 2,620
4 votes
0 answers
504 views

How can I use a Presale JSON file to keep my ETH long-term in cold storage and sell my ETC seperately?

I received Ether during the Pre-sale in June 2014 and received a JSON file and have the password. I have never tried to access these funds. I found out that I should have ETC & ETH due to the hard-...
Firedawn's user avatar
3 votes
1 answer
1k views

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

I have run into this issue. The cause is described in that thread, but not explained. If I run mist and let it launch its own node, then the Accounts>Import menu item is available. If I run geth ...
spraff's user avatar
  • 645
3 votes
1 answer
854 views

Hashes per Ether, before and after PoS

What is the mean number of embedded hashes per Ether? If my understanding is correct, the Keccak-256 hash function is a fundemental unit of computational work on the Ethereum blockchain. Therefore ...
Lee's user avatar
  • 8,568
3 votes
1 answer
297 views

What email address were pre-sale wallets sent from?

What was the email address that wallets from the pre-sale were sent from? This is the email that would contain the ethereum_wallet_backup.json file.
DirtStats's user avatar
  • 666
3 votes
1 answer
522 views

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

Lucky me - I bought 10000 Ether for 5BTC in the pre-sale and forgot about them until just recently. Yahoo! However, now that I've sold some at a profit I'm going to need to prove the date and quantity ...
rustbucket's user avatar
3 votes
0 answers
1k views

How to access and import presale ether without the json wallet file

I purchased ether presale. I have the public key, which shows the amount, and I have a text password I created at the time of purchase. I do not have a json drop file. How do I import my wallet? I ...
Art's user avatar
  • 31
2 votes
2 answers
5k views

Minting Tokens and OnlyOwner - ERC20

I have created a contract based on a standard one to mint and I have code as follows - modifier canMint() { require(!mintingFinished); _; } /** * Function to mint tokens * @...
Trevor Lee Oakley's user avatar
2 votes
1 answer
756 views

Bought Ether from ethereum presale (genesis) Forgot password [duplicate]

I bought ethereum from the presale. I have the json file but unfortunately forgot the password. Is there a way I can access the wallet?
Digi Soul's user avatar
2 votes
1 answer
539 views

Token distribution and Smart Contract [closed]

Might be this is the common question asked! , but still i have lots of confusion over here, As far as my knowledge all the tokens are released from Smart contract, so my question are : For every Pre-...
mac richard's user avatar
2 votes
2 answers
846 views

ERC20 Presale Contract and Data Field

I am creating a presale for a new ERC20 token. I have seen various methods and I would like more details about the data field. Example 1. Bitjob Address: ...
Trevor Lee Oakley's user avatar
2 votes
1 answer
291 views

GUI Ethereum just closes and does not import presale JSON wallet

When I try to import presale JSON wallet using the Ethereum GUI just closes (Kind of crashes) and does not import, has anyone seen this? It appears the password is good I have checked the eth address ...
user8812's user avatar
2 votes
1 answer
428 views

Pre-sale wallet and DAO hard fork

Assuming, I've never imported my pre-sale wallet from the initial ethereum crowd fund, could I simultaneously send the the contents of my wallet to an ETH address and an ETC address? I'd like to sell ...
randomletters's user avatar
2 votes
1 answer
128 views

Cannot load pre-sale Ethereum into Wallet

I purchased pre-sale Ether and stayed on the sidelines until today. I downloaded the Win64 wallet installer from GitHub and installed on Windows 10. It's running and syncing to the network. It has a ...
Keith Brodie's user avatar
2 votes
0 answers
334 views

I've forget my presale password and i'm trying to recover it with pyethrecover [closed]

Can someone help me please? I'm using pyethrecover and i've got this bug when i'm trying to bruteforce with some password :
POP's user avatar
  • 21
1 vote
1 answer
34 views

what is the unit in ICO?

It is a bit a silly question I am trying to understand what the amount of coins are sold in ICO, let's say, someone has minted 10 coins whose decimal are 3, which means someone has 10.000 (10 *10^3). ...
DHC's user avatar
  • 367
1 vote
1 answer
2k views

Call a specific function in a contract at a specific block

First of all I just started to tip my toes into smart contact development, so sorry if my question is not properly asked. I want to participate in a pre-sale and to ensure my place I want to call the ...
gabkov's user avatar
  • 113
1 vote
1 answer
591 views

Presale wallet gives zero funds

I have already asked this question but I post once again as helpdesk people at ethereum are asking to post here: After several years of waiting, I have decided to check how much ether I do have in my ...
developer12's user avatar
1 vote
1 answer
444 views

Ethereum Presale Wallet [duplicate]

I have the json file and the password. Is Go Ethereum the only option for import and updating the wallet? I am no programmer. I jump on board with Ethereum because it is, I believe, the only way ...
LostInTheWater's user avatar
1 vote
1 answer
315 views

ICO Token sale payment process

How can one start selling their coins on their custom website for ETH and Bitcoin? I was checking bunnytoken.com, they have very simple payment process script, which includes referral solution. ...
Basit's user avatar
  • 111
1 vote
1 answer
124 views

Can I find out ethereum address?

I bought ethereum from the presale. I have a presale wallet and I do not know the password. Is there a way I can find out the address?
josip's user avatar
  • 21
1 vote
0 answers
22 views

Ether Presale json file extracting different ethereum address

I bought Ethereum using three wallets and was able to access two of them, but I can't access the last one. When I opened the third JSON file, I could see the Ether address. I also checked on Etherscan ...
TCR's user avatar
  • 11
1 vote
0 answers
11 views

Tracking total sold not total supply?

I am setting up a pre sale contract, it enables users to purchase the tokens via a prelaunch which they are distributed from the owners (our contract owners) wallet when a user buys them. How are ...
Jim Mike's user avatar
1 vote
1 answer
266 views

Sell function but with accepting only another erc20 token, not eth

I want to sell my token (PRO TOKEN) to users in my presale, but I dont want people to send ETH or any other crypto to buy from my smart contract. I want people to buy my PRO TOKEN by sending ...
HiddenGemsss's user avatar
1 vote
0 answers
156 views

ETH 2.0 but I have yet to claim my ETH from presale

Had to deal with life and lost track of ETH after the crash. I have yet to claim my ETH presale and wanted to know with all the forks and now ETH 2.0, can someone go over the best way to claim my ETH ...
DMag's user avatar
  • 11
1 vote
0 answers
218 views

Pre-Sale receives error: Canceled - Warning! Error encountered during contract execution [execution reverted]

I have 2 contracts The first one cretes a token contract The second creates pre-sale contract Pre-sale contract created with 0.5 eth for paying for gas When trying to send 0.5 ethereum to pre-sale ...
New Friend's user avatar
1 vote
1 answer
340 views

Best practice in 2018 to claim Ethereum presale purchase [duplicate]

I have the presale wallet and password, but went through a number of trials and just now trying to get back on my feet. I have yet to claim my presale and could really use it to help with medical ...
D M's user avatar
  • 11
1 vote
0 answers
273 views

How to better design pre sale and sale staged smart contracts [closed]

I am planning to create a stage based smart contract, like a pre-sale contract and then first and second stage of sales. What is best idea to do? Shall we create everything in one contract or multiple ...
Fariha Abbasi's user avatar
1 vote
0 answers
636 views

How to mint tokens before crowdsale

I want to make a crowdsale with pre-ICO and ICO, so people can swap tokens directly by sending to the smart-contract. The pre-Ico should have a certain rate for the swap and the ICO should have a ...
SSB's user avatar
  • 11
1 vote
1 answer
509 views

How to create a different contract for private and ICO?

Is it possible that the Total supply is created at the time of creation of token for Privete-sale and then create an ICO contract for the Unsold tokens to sell them on crowdsale? (i.e. It is hard to ...
Jignesh's user avatar
  • 13
1 vote
0 answers
118 views

Will ethereum.org re-send a presale json wallet if I lost my original and never moved the coins?

Bought some ether in the presale, received a pdf receipt with my password, transaction id, and future ETH address, but I never did anything with it, never even looked at it again, until now. I ...
unhappyaboutthis's user avatar
1 vote
0 answers
106 views

Precautions before using a pre-sale address?

After the Ethereum pre-sale I've been pretty much out of the loop. Now I would like to start using my ETH but I'm not sure if it's that straightforward. I would not like to mess up and lose ETH ...
UqGkW3Cx's user avatar
1 vote
0 answers
395 views

Importing presale wallet on to Kraken

Anyone know an (easy way) to import a pre sale wallet onto Kraken? They used to have this tool but it doesn't seem to work anymore? Thanks
newdiggity's user avatar
1 vote
0 answers
1k views

Possible to use Hashcat to crack Ethereum password?

I have a Ethereum presale wallet and the password i recorded for it doesn't work. I now have a list of over 200 possible passwords for it. Is it simply a matter of trying to use SHA3 in Hashcat with ...
Karza's user avatar
  • 51
1 vote
1 answer
4k views

Is there an Ethereum wallet compatible with Mac OS X 10.7.5 or earlier?

I'm a non-techy newbie. I have a .json file relating to my presale Ether purchase which I am unable to access. I downloaded the Ethereum wallet 0-7-6 for Mac, but unfortunately I only have Mac OS X ...
Natalie Minnis's user avatar
1 vote
0 answers
254 views

Which password does Mist require when sending from the presale wallet?

Yesterday I was able to import my presale ether into my wallet and the balance now shows in the Ethereum Wallet. However, whenever I try to send and it asks for my password, it says "wrong password". ...
Patrickka's user avatar
0 votes
1 answer
87 views

"message":"execution reverted: arithmetic underflow or overflow"

constructor( address[] memory setupAddys, uint256 _totalTokensForSale, uint256 _softCap, uint256[] memory _Participation, uint256[] memory _Times, uint256 _lpPercentage, ...
asnidar as's user avatar
0 votes
3 answers
527 views

ApproveUSDT function not working internally, how do I fix this?

I’m experimenting with a presale contract based on the BSC testnet, and in the contract I’m attempting to achieve the purchase of my token with USDT. Using my own code within the contract itself, I ...
HAT0ken's user avatar