Stack Overflow
Stack Overflow

Questions tagged [hedera-hashgraph]

Questions related to development on Hedera Hashgraph distributed ledger

Hedera () is an open-source, Distributed Ledger Technology that includes services for EVM-compatible smart contracts, file service, consensus service, token service, and a schedule service. Check out "What is Hedera?" for a an overview, and docs.hedera.com for developer documentation.

Hedera uses its own Hashgraph consensus to secure the network and its transactions, and it is a faster, more energy efficient, and more secure alternative to blockchain consensus mechanisms. Participation as a consensus node is currently permissioned by the Hedera Council, with an intention to transition to a permissionless network in the future.

128 questions
3
votes
1 answer

Hedera Meta/Gasless Transaction

I am working on gasless/meta transactions. Is it possible in hedera to sign the transaction using one account and submit/execute and also pay for the transaction by a different account?
Naveen Sharma
  • 31
  • 1
3
votes
1 answer

jnius.JavaException: JVM exception occurred: exceeded maximum

I am creating a DApp on the Hedera Blockchain using Hedera-sdk-py, a python wrapper of Hedera SDK in Java. I keep getting JVM exception occurred: exceeded maximum attempts for request with the last exception being…
mev
  • 177
  • 5
3
votes
2 answers

Transfering ERC-20 in Hedera hashgraph

I'm trying to write function which will be transfer erc-20 tokens in hedera hashgraph. pragma solidity ^0.8.7; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; contract Coins is ERC20 { constructor(string memory name_, string…
Alexey Seliverstov
  • 51
  • 3
3
votes
1 answer

How do I mint multiple NFTs on Hedera calling TokenMintTransaction only once?

I want to mint 100 NFTs. Do I need to call "TokenMintTransaction()" 100 times? Is there some way to mint 100 NFTs in a single API call? Here's the code I'm using: let mintTx = new…
Ed Marquez
  • 488
  • 1
  • 10
3
votes
1 answer

What causes an INVALID_TRANSACTION_START when submitting a transaction to Hedera

I am receiving the following error when I submit a transaction to Hedera: failed precheck with status INVALID_TRANSACTION_START This hasn't happened to me before and I'm confused. Why is this error happening?
Abi
  • 356
  • 2
  • 11
3
votes
1 answer

Getting error "Transaction Oversize" while creating a smart contract in Hedera blockchain

My bin file size is 18kb only. I also get a solution to use IPFS but don't know how to use it. If there is any reference for using IPFS then share me plz. : Error: PrecheckStatusError: transaction 0.0.34898094@1653658245.135892060 failed precheck…
Sumit Sharma
  • 85
  • 8
3
votes
1 answer

Hedera Minting DAPP, How to connect wallet

Im coming from the 'other' blockchains and not sure how we would authenticate a Hedera user on a DAPP. Essentially I need to create a minting DAPP. I need the user to connect his wallet, pay using HBAR and get his token. Do I need to use a wallet…
Stefanpt
  • 77
  • 9
2
votes
1 answer

How to Associate/Dissociate an HTS token using Hashgraph JS SDK

I have created a new token on HTS using the JavaScript SDK: // Create an HTS Fungible Token async function createFungibleToken( client, treasuryAccountId, treasuryAccountPrivateKey, ) { // Generate supply key const supplyKeyForFT =…
Abi
  • 356
  • 2
  • 11
2
votes
1 answer

How to check if an account is associated with an HTS token using the Hashgraph JS SDK

Using the SDK, I was able to obtain a “TokenBalanceMap” using the following code: const accountBalance = await new AccountBalanceQuery() .setAccountId(accountId) .setTokenIds([tokenId]) .execute(client); const tokenBalance =…
Abi
  • 356
  • 2
  • 11
2
votes
2 answers

Hedera removes the contract after deployment

I am trying to deploy a contract. I get the contract address without errors. Immediately after deploy, the contract is deleted. Although it is possible to transfer funds to the contract address without errors. What could be the…
Pavel
  • 21
  • 3
2
votes
1 answer

What is a Delegate Contract ID in Hedera

The concept of Delegate Contract ID is touched upon in the documentation but I don't understand it. I was not able to find examples or further explanations. Can someone point me to more details?
Micha Roon
  • 3,957
  • 2
  • 30
  • 48
2
votes
0 answers

Hedera Rust SDK unable to encoded transaction

Hy everyone, I am trying to create freeze TransferTrasnaction using Rust SDK. I now it's still in development process but I was wondering if there is a way. What I want to do is create transaction on one client that will pay fees, freeze transaction…
perkan11
  • 21
  • 2
2
votes
1 answer

Can I control which consensus node I want to submit my transaction to from the client?

I'm using Javascript SDK. Currently it seems random. I'm wanting to submit to a specific node to reduce latency
Defi Girl
  • 186
  • 4
2
votes
1 answer

Large discrepancy in `gasUsed` values in near-identical transactions on Hedera - why?

I have noticed that there is a discrepancy between the amount of gas used by a transaction is almost identical: I'm making a call to a smart contract, with the same parameters twice in a row, and the only difference between the 2 is that I'm setting…
bguiz
  • 27,371
  • 47
  • 154
  • 243
2
votes
1 answer

How to convert a Hedera native address into an EVM address? ​

How can I convert a Hedera-native address to an EVM address (and vice versa)? ​ Let's say I have the following: a Hedera-native account, with an address like 0.0.12345 an EVM account on Hedera, with an address like…
Ryan Arndt
  • 148
  • 5
1
2
3
…
8 9