Questions tagged [cpp-ethereum]

The Ethereum C++ client.

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pending transaction on eth blockchain

i still waiting from 4h for my transaction. I know de gwei is low but what you think it will be processed. 0xb69c181d38bcd157d07a623b5c1b620e6694644626bc1ed48e984ed089933e86
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9 views

Ethereum NFT options

I am looking at producing a set of NFT's that are a set of 100, the item does not have an image, but is a token to run through an algorithm, I want them to be limited whole NFT's, not ERC-20s. I am ...
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sent etc classic to my eth address on hotbit

i sent my etc classic on coinbase to my eth address on hotbit. hotbit is now trying to get money from me to try and help. is there any other way to recover these tokens? i've been researching for ...
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i got a question about Etheriuem shares

hey i was wondering is it random time to get shares while mining eth depending on my pc power and pool im on because im mining on asia1.ethermine.org and i dont know if im meant to get shares quickly ...
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1answer
21 views

Coin sent to the wrong wallet address [closed]

I sent ETH from a meta mask ETH wallet to a Coin Base Celo wallet address that I own by mistake. Can this be fixed as I own both wallets? Any help would be greatly appreciated!
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ETH Stuck because of low sending fee

Hey there I'm the one who supposed to received the ETH it seems like the transaction has been pending since 2 Days straight because of the low gas fee is it possible for me to just wait? or do I need ...
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1answer
14 views

DAO ETH account thru Shapeshift

In 2016 I did exactly the sentence below. Not ETH account was ever sent to me. Now I have almost 10 ETH sitting on the DAO that I can’t access. I tried customer support for both ShapeShift and ...
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ether.li -> how to transfer to any other wallet?

Dears, I'm holding some ETH since 2016 now and remembered this the last few days. However, as the price is nice, I'd like to sell some but they are on ether.li and I cannot transfer to any other ...
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Can I recover ETH sent to a know address? [duplicate]

On my Metamask Wallet I sent inadvertely my ETH to another address. Can I get it back?
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TX recieved from subscribtion but not in Tx pool

I am running local Geth and I subscribe to pending transactions like this : const subscription = web3.eth.subscribe('pendingTransactions', (err, res) => { if (err) console.error(err); }); ...
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Is their any change to move a wallet from an bnb blockchain to an ethereum blockchain?

I transferred some ethereum to my bnb wallet. Later I found out that this bnb wallet is not on the ethereum platform. So I send an amount of ETH to an address similar to the address of the bnb wallet (...
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A silly question about web3.eth.sign

I'm a beginner and I need to sign the data with metamask,Find the document https://learnblockchain.cn/docs/web3js-0.2x/web3.eth.html#sign then In the browser's debug desk ,i try run web3.eth.sign('...
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1answer
24 views

Is it possible to charge extra ETH fee for token transfers? [closed]

Is it possible to accumulate fee amount deducted from transfer transactions in a different address in smart contracts? Person A transfers tokens to Person B. Let's say the transaction fee is 0.1 ETH, ...
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any 3rd party service that can get all transaction?

3rd party service recommended have any 3rd party service that can get all transaction of address? because from my research the web3 cant get the full transaction by account.
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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 ...
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Aleth. Create unsigned transacion from json

I am trying to create unsigned transaction with aleth. I am trying to use ./rlp create command for this which accepts transaction in json format. Does anybody know this json format looks like? What ...
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Encoding and signing transaction with aleth client [closed]

I am learning aleth client. I want to do two simple steps: encode json to rlp with ./rlp create [...] sign this rlp with ./aleth-key sign <ma_rlp> And I am getting errors in ./aleth-key sign &...
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creating and signing transaction

I am looking a way to create signed transaction using c++ libs from aleth. I have this transaction: { from: "0025defd0f341b7f673f84b81c8416d58df29045", to: "...
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Is there any c++ library for signing transactions?

I am working on light wallet in c++, and I am looking for a c++ library for signing transactions. I mean something where i will pass transaction and private key and it will return signed transaction ...
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23 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: ...
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1answer
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Datetime in solidity [closed]

how can i get date time in solidity like that: 14/10/2020 20:50. I don't want 8:50 PM. I get in timestamp but timestamp not possible convert because I have wrong timestamp.
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What is impacting generated contract address? [duplicate]

What is used to generate contract address. I found this project https://github.com/johguse/profanity And I want to generate vanity contract address. If I understand correctly it not depends from ...
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22 views

Generating blocks without mining,

I have private test network, and I need to simulate forks. Is any possibility to immediately set number block fork-1 (in PoA or any other protocol) ? If yes, what is the easiest way to do it ??
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307 views

web3 eth return returns a nonexistent transaction hash

I'm trying to create transactions something like this: var sender = meth.eth.accounts.privateKeyToAccount(data.fromPrivate) meth.sendTransaction({ sender, to: data.to, amount: data.value, }, cb) ...
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1answer
75 views

eth_getLogs was only return erc20 tokens

i have used below command to get every logs on the special blocks but its only return erc20 token logs and ethereum transactions was not listed. my geth command: curl --data '{"method":"eth_getLogs",...
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Ethereum token transaction taking too much time to confirm [duplicate]

I was transacting an ethereum token CRO crypto coin out of wallet. There was 3 fees options. I chose fees for slow transaction time. And it told the transaction should confirm in 30 minutes. But now ...
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1answer
53 views

Ethereum stores its own data, how to synchronize the data to other nodes in the future

I use smart contracts in Ethereum to store some string data, how to synchronize these stored string data to other nodes. As far as I know, these string data are stored in the node's leveldb database, ...
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1answer
54 views

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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31 views

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 ...
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203 views

ethminer application is not working on linux centos 7 for FPGA card

I have installed new xilinx FPGA card on linux centos 7 for ETH mining. Note: [bitstream, drivers have been installed]. The ethminer application throwing below error, ethminer 0.18.0-rc.0 Build: ...
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1answer
35 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 ...
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1answer
28 views

Are there any API to get real money value equivalent of a transaction?

I know that etherscan shows the total cost of a transaction both in eth and in US dollars. Is there any api of any kind to be able to get instant value of eth when I send a transaction?
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66 views

How can I send tokens to large number of addresses?

I have to send 221,000 tokens (ERC20) to 6477 different addresses. Airdrop guy used some automatic sending app and that tells 1.94 ETH is needed as approx cost of operation to send all this. Is there ...
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1answer
143 views

(error_10) Please enter a valid data value (Must be hex.)MyEther Wallet

im trying to deploy smart contract on Myteherwallet but geting an error while deploying byte code of smart contact which is written in solidity remix IDE I have even tried to change the object byte ...
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2answers
44 views

No longer have tokens after updating Nano S [closed]

I recently updated my Nano S and was required to reset everything. After udpdating I went to MEW to swap my KIN & I had a ETH Ballance of 0.000 & a KIN ballance of 0.000. I have the address ...
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1answer
65 views

Any QuickBlocks tutorial?

From my understanding QuickBlocks is an api in C++ that provides similar services as etherscan API for the ethereum blockchain. Is there a link or tutorial to use quickkblocks because the example in ...
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1answer
33 views

Adding the delta to a token transfer

Let's say I have 5 contributors to a pool of a smart contract. They all contributed 1 ether. The smart contract lost 2 ether, and now I want to transfer back the remaining 3 ether to the 5 ...
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1answer
187 views

Get ETH and Token Balances of Wallet address

How do I get a simple and fast balance of ETH and all Token owned/stored within a wallet address? I have seen similar question and the closer answer was in this demo: http://wbobeirne.com/eth-...
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45 views

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....
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2answers
124 views

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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2answers
115 views

Cant send ether from one contract to another

I have 2 contract contract A{ uint bidValue; address bidder; function bid() public payable{ bidValue = msg.value; bidder = tx.origin; } } And contract B : import A.sol; ...
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1answer
100 views

plug our own consensus in any one of ethereum client? [duplicate]

Actually i try to add new consensus and will through modifying some consensus to see its effect on transaction throughput. so what platform should i use that provide me this facility or should i use ...
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1answer
87 views

Ethereum receipts blockid and hashes

Preface: The question relates to the relationship between the content of the Ethereum's receipts and the hash of the block header. Problem description: I wonder, in Ethereum, blockid is based on the ...
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1answer
198 views

How to choose contract address and wallet address

When you start an ICO, to receive a fund from people for your ICO, how do you choose the contract address and your wallet address to receive ETH collected for your ICO? Thank you. And excuse me for my ...
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1answer
26 views

problem displaying ico

I created an ICO using ropsten (because I did not have an ETH) and when I search for my ICO on https://etherscan.io, I cannot find it. I can only find it here: https://ropsten.etherscan.io. Is it ...
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1answer
445 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 ...
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105 views

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 ...
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24 views

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 ...
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ethereum wallet running a private net 0 peers 0 waiting for blocks

am using geth VRSION: 1.8.20-stable-24d727b6 and ethereum wallet Ethereum-Wallet-linux64-0-9-3 and i am using Ubuntu 18.04.1 LTS in the geth console i started the miner but either is not ...
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1answer
195 views

Metamask does not react on delivering gasPrice

I am using following code to generate a new transaction using web3.js & metamask: var web3dictdata = { gasPrice: web3.toHex(10), gasLimit: web3.toHex(210000), to: "...

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