All Questions
182 questions with no upvoted or accepted answers
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Internal Transactions - How to find out the address of the contract that is calling?
i have been Googling for this answer, but i haven`t succeeded.
The scenario is the following: I have two contracts interacting with each other, and I want to make sure that they only respond to each ...
- 29
0
votes
1
answer
290
views
How to handle forks, dropped/reverted blocks
I'm building an ethereum wallet, I've setup geth.
I'm planning to subscribe to new transactions on geth websocket, I can't figure out how to deal with dropped blocks and hardfork. let's say a user ...
- 1
0
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answers
44
views
Using two key for displaying data from contract
i can't found any idea how to get data with two keys. One key "address", second key is "IsCollect"
My mapping:
mapping(address => Player) public users;
struct table:
...
- 1
0
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0
answers
203
views
Low Peer Count For a light ethereum node
I am running a Light node via Geth in a Debian OS . i am getting 1/2 max peers and for many hours of the day with 0 peers . what is the solution ? how to get atleast one peer everytime ?
0
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1
answer
912
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Error encountered during contract execution [Reverted] Problem with Contract
I've sent the transaction - https://ropsten.etherscan.io/tx/0xbecb36319d806edc3617abcbeb1f95e7215cb205dc180088f225c1addd82086f to the contract address and it got reverted.
Could someone explain me ...
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55
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Write Secret Shared Data onto Ethereum
What would be an approach to do the following:
1) Secret Share data provided from a file
2) Publish the secret shared data onto an Ethereum instance (aleth/geth)
3) Be able to retrieve and ...
0
votes
1
answer
83
views
Compiling cpp-ethereum (aleth) sources as a part of my cpp project
I want to use cpp-ethereum aleth smart contracts sources in my altcoin project. My sources can compile with cmake or autotools system. I tried two ways to compile cpp-ethereum with my sources:
Using ...
- 21
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1
answer
104
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same transactions by different miners at same time
i have a private network having 3 nodes, two are mining and one is listener. All three nodes are connected as peers. Now, is there any way where both miners pass same transaction at same time.
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0
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264
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How to know weather ETH or some token like USDT is transfered in smart contract transaction
From last two weeks I am stuck on, I want to know in smart contract transaction either ETH is transfered or some token like USDT below is the JSON of transaction hash.
I am working with DotNet core ...
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57
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Need to help in adding bigendian support for Keccak256.cpp
Need help in making the keccakf function based on endiness in https://github.com/ethereum/solidity/blob/develop/libdevcore/Keccak256.cpp. I have gone through similar functionality at https://github....
- 101
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votes
2
answers
377
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How can I parse internal transactions with light node?
is that possible to receive all transactions from new block with light node and parse all and even internal transactions with the help of its api?
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209
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How to upgrade Solidity version in geth or ethereum private blockchain
I have built my private blockchain of ethereum and i'm curious to know that how can i upgrade to new version of solidity within geth so that we also can develop smart contract on newer version as ...
- 51
0
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0
answers
38
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ropsten eth что делать
I sent eth 2.62(NETWORK ETH) ON the eth ropsten wallet address 0xe2fcd50EfdD674C26f894aB5ad71fEcB14b7cDA4(BUT NETWORK ETH (myetherwallet.com)NOT ropsten eth). How to transfer to the wallet Eht ...
- 1
0
votes
1
answer
91
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I am trying to add ether to one of my ethereum account using smart contract
function Execution (address _from, address _to) {
_from.transfer(price);
_to.getBalance(_to) += price;
}
1) I think it is duplicate but i gone through but nothing helped
2) I ...
0
votes
1
answer
249
views
Transaction Pending and Dropped
I have a transaction pending from 4 days.
I have tried to unlock following this answer:
MyEtherWallet is pending and dropping. It looks like it is stuck in a loop for 2 days?
Now the current nonce is ...
- 1
0
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answers
111
views
Ethereum Address genration gives new address and new private key everytime in Android
I am using 'org.ethereum:geth:1.6.5' dependency.
I am trying to follow github code of
https://github.com/ethmobile/ethdroid .I found it gives every time new private and address.
I want to have same ...
- 111
0
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0
answers
2k
views
Warning! Error encountered during contract execution [Reverted]
i have contract which looks like following
pragma solidity ^0.4.8;
contract Rental {
struct PaidRent {
uint id;
uint value;
}
PaidRent[] public paidrents;
event ...
- 237
0
votes
1
answer
127
views
Testrpc withdraw function does not work
I have a very simple contract with a withdraw function.
contract PayTest {
function() public payable {
}
function withdraw() {
msg.sender.transfer(4000000000 wei);
}
}
When I try it in the ...
- 723
0
votes
1
answer
48
views
strange log message in cpp-ethereum eth-log
I see a strange message in my eth-log:
[35m⚙^[[97m ◌ ^[[35m07:26:46 AM.561^[[0m^[[30m|^[[34meth^[
[0m Paying 63 szabo^[[0m from sender for gas
( ^[[34m21000^[
[0m gas at 3 Gwei^[[0m )
(sorry for ...
- 115
0
votes
2
answers
945
views
geth attach issue between mac and windows
I am running geth on windows machine and try for geth attach in mac. I give
below error:
Fatal: Failed to start the JavaScript console: api modules: Post http://192.168.0.107:8545: context deadline ...
0
votes
0
answers
163
views
ETH stuck after cancelled due to "out of gas
I have seen another questions with the same problem but the answers given there do not work for me and therefor put my question here again.
I sent 0.5 ETH and 0.1 ETH from my Jaxx Wallet to Poloniex. ...
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answers
235
views
How to call hash function in solidity to free a stuck smart contract?
I was selling an altcoin on Etherdelta using a sell order and 3 transactions went through however the ethereum did not show up in my wallet. I contacted support and they say that "your altcoin is ...
- 1
0
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0
answers
314
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eth.sendTransaction submits, but doesn't add to contract balance or trigger fallback function
I have tried sending 0.06 Ether to a contract as follows:
eth.sendTransaction({from: eth.accounts[0], to: "0x76E15697E36a66BF977D35de3C488F10B8014e65", value: web3.toWei(0.06, "ether")})
I've also ...
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0
votes
1
answer
381
views
user api to exchange eth token and wallet address creating using code
Is there any API to help exchange ether or tokens online which will help in coding an exchange.
For bitcoin one can generate a wallet address, is it possible to generate a wallet address for Ethereum ...
- 3
0
votes
1
answer
125
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Problems funding Ethereum Wallet
Tried making three separate transactions from two separate wallets (Coinme and Coinbase) each in relatively small amounts (less than $50) to fund my Ethereum Wallet 8.0 for Mac. None have appeared ...
- 1
0
votes
1
answer
656
views
Geth says it's synced, but is about 50 blocks behind everyone else
So I run a small eth mining pool and the eth node says it's synced, but when I compare the block to the ones on other pools we are about 50-100 blocks behind. When I check in geth it says it's fully ...
- 1
0
votes
1
answer
278
views
Ethereum mist wallet not synchronising, not showing Ethereum and folder
I am a beginner at setting this up and I used a youtube tutorial to download Mist. The problem is it's not syncing the blockchains. I've tried to debug this by going to users/appdata and inside the ...
- 111
0
votes
1
answer
493
views
Forgot password of eth keystore v3 mist wallet keystore!
I have my ethereum keystore v3 , it is mist keystore file , but it also may login from myetherwallet site,I forgot password to it,I tried lexansoft,but all alphabet so long to try,I will write my hash ...
- 11
0
votes
1
answer
434
views
is it possible to have a password bug in mist wallet 0.8.10
I was playing with account creation with in MIST and i find one account always saying "password wrong" when i try to transfer ether to other accounts. It can still receive ether though.
I use same ...
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-1
votes
1
answer
2k
views
How to create and manage a referral link on solidity Smart Contract (unique referral link)
I'm building a DApp in solidity where I want give a bonus to the users that wants promote it.
My problem is that, to use my Referral system, now I need to insert manually the wallet address of the ...
-1
votes
1
answer
212
views
Generate ETH address with button on my website
I'd like to open a website that I can easily generate an ETH address like this website: http://taschh.com/microworkers/cv/generate/
Of course, I will have all of ETH address and its private key.
I don'...
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-2
votes
1
answer
839
views
How to sent ETH from Parity command line
I was wondering if it is possible to send ETH using the parity command line, without opening the browser and going to the address 127.0.0.1:8080. I want to host my Parity instance on a headless ...
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