Questions tagged [transactions]

The term "transaction" is used in Ethereum to refer to the signed data package that stores a message to be sent from an externally owned account.

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663 views

Submitted transaction not propagated to all nodes

I have a private ethereum blockchain network running set up in 3 nodes using geth. If i submit a transaction(smart contract function call) to one node and go to another node and type in eth....
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1answer
2k views

Etherscan: Effectively paginate `Event Logs` result

I am using Etherscan API for various Ethereum details. I need to find out the tokens transferred from a token original contract (let's say A) address to a particular address(let's say B). For this ...
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1answer
168 views

Receive deployed contract address by transaction hash with JSON-RPC request

I want to receive deployed contract address by transaction hash. Transcation example - 0x996a683acd59a2ad17461f76ce0f387a89a5ac257ec5d667556219c6acc7f45a. As you can see this contract was deployed by ...
5
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1answer
561 views

What is the current size of the Ethereum State?

What is the current size of Ethereum's state in bytes? I am not asking about the size of the blockchain with blocks headers, transactions and receipts. I am looking for the size of all the structure ...
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123 views

Autorefill isn't working on Improved Coin code

I've been trying to write a token contract with the autorefill function, but perhaps the code for the token example on the ethereum website is somewhat outdated, because it isn't working. Did anybody ...
4
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1answer
1k views

Events not being detected in Nethereum

I have a function in one contract that looks like this: //Events event RequestReceived(bytes s); event WorldCreated(bytes32 indexed worldName, address indexed sender, address result ); ...
4
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0answers
585 views

Managing multiple Ether addresses in one contract?

Although I have a background in Bitcoin (creating the WLOX exchange platform), I am completely new to Ethereum. I am trying to find a way to manage multiple accounts/addresses as a pool to (1) be ...
4
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0answers
229 views

What is the correct value to report for input data in this context?

On this transaction: https://etherscan.io/tx/0xae2630cdfbd0ca5292d272343c35dc8094365f2ecdc5c262c5639e79683f74dc, the input data is parsed and displayed as 'fund'. This is both correct and incorrect. ...
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Will forthcoming ability to make transactions private hide gas usage and mining information?

I understand that people are working on allowing for more private transactions on the public Ethereum mainnet. This would involve hiding (at the very least) the from, to, value and probably input ...
4
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1answer
2k views

Mist, transaction "couldn't be successfully executed"

For some reason I can't send transactions from my Mist wallet. I'm running the newest version (0.8.7). When I send a transaction, after a couple of minutes I get the message that the transaction "...
4
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0answers
89 views

Can I get a list of all transactions that are sent to a particular contract on Eris?

Can I get a list of all transactions that are sent to a particular contract on Eris? I see that there's a similar solution for the Ethereum API. How can I get a list of of transaction data which are ...
3
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0answers
62 views

Retrieving the sender of a transaction

I am trying to retrieve the sender address within a transaction in Go and I am facing some issues. As I understand, in order to retrieve the sender of a transaction, you can either try to get the ...
3
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0answers
560 views

Transaction not being mined within 750 seconds

On the main net, after getting the error from the title, by making sure it's not in pending pool, how long should I wait until I can safely retry a transaction? Thanks
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31 views

EOA to EOA transaction: only data, no ether

It is my understanding that it is possible to create a transaction to send just data from an EOA to another EOA (no ether). In this case the data is completely ignored by the Ethereum network and if I ...
3
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1answer
62 views

Do miners undergo a sunken cost of attempting to verify an invalid transaction signature?

In the case of an 'invalid' transaction whereby the state transition of the execution is deemed to conflict in some way and reverts, the transaction itself is actually valid; gas is consumed, tx ...
3
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0answers
71 views

Why using Merkle Patricia trie for keeping transactions and receipts instead of Merkle trie?

Using Merkle Patricia trie for keeping Ethereum states has the advantage of fewer changes in the data structure during the updates in the states compared to Merkle trie. But what is the advantage of ...
3
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0answers
84 views

How do I check transaction status using go-ethereum simulated back-end?

Using the go-ethereum simulated backend, I would like to: 1) Instantly commit a transaction so that it either succeeds or reverts in a given simulated blockchain. So far I'm using sim.Commit() to ...
3
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0answers
163 views

Get proof that a transaction was included within a block

I see that the web3 api has the getProof method: https://web3js.readthedocs.io/en/1.0/web3-eth.html#getproof My question is - is there a similar way to get (and verify) a proof that a transaction x ...
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786 views

Signed transaction vanishing from testnet (Kovan & Rinkeby)

I've been attempting to broadcast transactions to both Kovan & Rinkeby, I'm building and signing them offline and using the Etherscan API to broadcast the signed transactions. I see them in the ...
3
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0answers
286 views

The sendSignedTransaction function does not activate the on('receipt') event at an appropriate time

console.log(transacting...); web3.eth.sendSignedTransaction('0x' + serializedTx.toString('hex')).on('receipt', receipt => { log(receipt); log(`https://ropsten.etherscan.io/tx/${receipt....
3
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1answer
66 views

Is it possible to check the Thrid party token ( USDT ) within my ERC223 contracts?

I want to check how many tokens are received in my contracts, so that I am able to allocate MY TOKENS to the TOKEN Sender. I tried several ways like approveAndCall, but its not working. I don't ...
3
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1answer
352 views

Create Accounts Using Web3.js in Browser

TL;DR - Replicated Ethereum Blockchain. Running Local Node. Connecting Local Node to Web3.js in browser using RPC. Want to create addresses & send transactions Details - I have a blockchain that ...
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330 views

Monitoring Eth Transactions and Syncing Native Database transactions with Etherium Blockchain

Currently, I have a node.js application which interacts with geth through web sockets. I have a listener, web3.eth.subscribe( 'pendingTransactions', function(err, result) { if(!err) { ...
3
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0answers
84 views

Storing Private Keys in IoT Devices

In a network of IoT devices like internet-connected Raspberry Pis which sends transactions to the Ethereum blockchain, the Pis need to be able to access their own Ethereum private keys in order to ...
3
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1answer
248 views

UTXO vs Account scalability paradigms and Merkle proof of ownership

From Ethereum's design rationale: Potential scalability paradigms: UTXOs are more theoretically compatible with certain kinds of scalability paradigms, as we can rely on only the owner of some coins ...
3
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1answer
600 views

Pending transactions are not mined

Preconditions I'm running a private network with Geth, having custom smart contracts deployed by Truffle and a simple frontend which using Metamask as a provider to connect the network. Versions ...
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0answers
548 views

how to send transaction with geth running in light mode on testnet

I am having troubles to sendTransaction with geth running in light mode. Startup: geth --testnet --syncmode "light" --rpc --rpcport 10001 --rpccorsdomain "*" --rpcaddr 127.0.0.1 --datadir /opt/...
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0answers
3k views

How to send transaction with web3.eth.sendTransaction?

I am sending ether by using web3.eth.sendTransaction. But when I send, there is error: Failed to check for transaction receipt: web3.eth.sendTransaction({ from: base_address, to: withdrawer, ...
3
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2answers
214 views

Creation of a whitelist in a private network with Rinkeby Clique PoA?

I'd like to create a private network where I would limit the creation of smart contracts to a whitelist of accounts. Is there any option for this?
3
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0answers
294 views

Did f2pool manipulate transactions during the Status ICO?

Blocks such as this one and this one appear to show preferential treatment being given to f2pool transactions in blocks mined by f2pool during the beginning of the Status ICO (at block height 3903900)....
3
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464 views

Validators in POS

note: Simple, layman, language would be highly appreciated! Hello, So, what would a 'validator' (after switching from PoW to Pos on Ethereum) actually, do? Specifically? Would he be required to ...
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0answers
100 views

Is it possible to stack transactions?

Is it possible to stack transactions which depend from themselves? Example: State on start: Account A (2 ETH), Account B (0 ETH), Account C (0 ETH) Transaction 1 - Account A sends 2 ETH to Account ...
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0answers
232 views

Can a contract keep track of sent transactions?

Let's say I have a contract with a "withdraw" function. Now someone calls this withdraw function, resulting in the contract doing something like receiverAddress.transfer(amount). Now I would like to ...
3
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0answers
1k views

etherwallet-3.4.2 on private chain invalid sender error

In order to use etherwallet in private chain setup, I completed following Use Your Own Server Guide, answer_1 and answer_2. I have added Custom Node and MyEtherWallet works , except sometimes it ...
3
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0answers
328 views

not able to mine transactions generated on remote node

i have connected two nodes locally on my private testnet using admin.addPeer() I0829 16:33:25.280649 eth/downloader/downloader.go:320] Block synchronisation started I0829 16:33:27.187839 core/...
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0answers
34 views

Splitting funds - How to do it quickly (synched TX)?

Changing blockchains and synching with Mist is a slow and hacky process so I wondered if there's a more immediate way. The idea being : transfering funds from my duplicated accounts to new and unique ...
3
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0answers
63 views

Effectively debugging pyethapp

I have also asked the technical details of pyethapp's use of gevents here. I'm trying to run a transaction step by step in a debugger and see how it is being signed and added to the blockchain. I am ...
3
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2answers
2k views

How to check Balance & send ERC721 Tokens

I have SPH ERC721 Tokens. How can I check balance like ERC20 and send ERC721 tokens token to Exchange or in other wallet ?
2
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0answers
44 views

What's the type (always 0x0) field of a transaction about?

Using web3 you can get all transaction of a block web3.eth.getBlock: const web3 = new Web3(provider); const currentBlockNumber = await web3.eth.getBlockNumber() // true means that transactions should ...
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0answers
626 views

how to fix "MetaMask - RPC Error: The method 'eth_signTransaction' does not exist / is not available"?

I am learning how to use Web3.js and I am getting this error: MetaMask - RPC Error: The method 'eth_signTransaction' does not exist / is not available. When trying to sign a transaction (for later ...
2
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0answers
97 views

openethereum - high gase, transactions get culled / too many trasnaction in queue

We have the following openethereum service (docker-compose) version: '2.3' services: ethereum: # using v2.6.2-beta as it's stable # paritytech/parity-ethereum/issues/10371 image:...
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0answers
540 views

Web3 - Buy token by code

i'm trying to buy $TRY token with my code. It's BSC token. The problem is when i send money to the contract i don't receive any token :/ The contract i'm trying to buy : https://bscscan.com/token/...
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0answers
14k views

I can't approve and sell a token I bought on pancakeswap. I saw someone else sell it in the transaction list on bscscan

Okay, so obviously I bought a scamcoin, but theres this one guy who still managed to sell it, most likely by using a bot. I want to sell the token as well, the liquidity isn't pulled and I would make ...
2
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0answers
35 views

Ensuring the atomicity of multiple transactions

I am new to solidity and have been creating single (both basic and complex) transactions. However, I have a question which I couldn't come up with a solution. How can I create 2 (or more) transactions ...
2
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2answers
31 views

How Ethereum take fees in broadcast?

Can I broadcast someone else signed transaction and use fee from my address? if yes then how? Let me elaborate my Question Suppose person A want to transfer some ERC tokens to person B. But person A ...
2
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1answer
280 views

How long does it take to validate transactions?

It seems to be a common sense that validation process on the blockchain is very fast. I wonder how fast the process could be? How long does it usually take to validate a transaction? What will be done ...
2
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0answers
77 views

Why do pending transactions appear to have a 3 hour cycle? (according to Etherscan data)

See: https://etherscan.io/chart/pendingtx There's clearly a 3 hour periodicity of txn volume. Now, I'm aware that Geth nodes have a parameter --txpool.lifetime which is set default to 3 hours. But ...
2
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0answers
334 views

Exchange deposits using smart contracts and externally owned accounts

While researching how different exchanges handle user deposits, I noticed a stark contrast between several prominent exchanges. Kraken: Exchanges like Kraken use newly generated deposit addresses (no ...
2
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0answers
92 views

What does sendSignedTransaction return?

I want to call a method in the smart contract (UpdateWeather) that goes through several steps before returning the result (an integer). I use sendSingendTransaction but I have doubts. Is the ...
2
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0answers
189 views

How to capture error reason of "ALERT: Transaction Error. Exception thrown in contract code." from Metamask in the front-end

Let's say we have a smart contract test with a function foo() and a modifier so that only the contract owner can call this function. Now we have a front-end with a user that is not the contract owner ...

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