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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.

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Deserialization of a protobuf object in Corda

I am trying to instantiate and sign a protobuf message within a Corda flow; the original transaction is created by a JavaScript client, encoded as base64, and submitted to Corda. The Corda node decodes, signs and forwards to the public network. The…
JSilverII
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Hashgraph, what's it and how does it work?

Does anyone know what's a hashgraph and the difference from blockchain? If you could explain it to me how it works, I would be pleased! Thank you in advance!
edo_griba
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Plotting a Hashgraph Simulation in Python

I've been working on a Hashgraph simulation for some time and I'm having trouble trying to figure out how to plot data in a hashgraph data structure. My hashgraph data structure is a dictionary containing keys (which would be the names of each…
Mav
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Can anyone describe the differences in Tendermint and Hashgraph?

Can anyone describe the differences in Tendermint and Hashgraph? We are looking to use a BFT consensus solution with mongoDb like in BigchainDb but we are wondering the differences with Tendermint and Hashgraph? thank you
Ryan Yoshimoto
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How to avoid using a loop query to get the result for a transaction?

I am trying to wait for the receipt as long as my transaction is valid. At the moment, I use the TransactionReceiptQuery method in a loop, and after each 'failing' query I wait 2 seconds before retrying. Is there a better way to wait for the receipt…
Mulders Michiel
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How do I make free read-only calls to a smart contract on Hedera blockchain network without incurring charges?

The problem is that I am trying to make free read-only calls to a smart contract on the Hedera network, but am encountering unexpected results. I have tried various methods, but am unable to successfully make the calls without incurring charges. I…
Acehilm
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Can we update solidity smart contract which is deployed in Hedera TestNet?

As of now I need to deploy new contract for every change in solidity. We loss all the previous data which is in old contract. https://docs.hedera.com/guides/docs/sdks/smart-contracts/update-a-smart-contract for reference
Paras Dalsaniya
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Process NFT metadata on hedera chain

I'm trying to get the metadata from the NFT on hedera chain. When creating NFT the CID was converted to unit8array format but when I fetch the data the output is different. I'm unable to retrieve the original CID value which was in metadata. link to…
Namish Khandelwal
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