Visibility of Source Code and Business Information in Ethereum blockchain

PingpongSet 36

Is it correct that everyone can see my source code once smart contract code has been published to blockchain?

Is it correct that everyone can see application's businesss state and information saved in blockchain?

For example, the example below sends a request to blockchain, receives response from blockchain. In this case, can anyone see the source code and business information? The app uses Ethereum blockchain via Solidity.

Updated:
https://video2.skills-academy.com/en-us/azure/blockchain/service/send-transaction

1 answer

Shrc-MSFT 226 Reputation points

2020-09-02T12:15:16.507+00:00

Hi,

In any blockchain the business info/state is visible to the participants of the blockchain network or consortium. Any smart contract state changes in done via a transaction that is shared between the participants of the transaction. Hence the contents/operations exposed via that smart contract is also visible to the participants of that transaction, so that they can verify it's validity / have a consensus on whether to accept/reject it.

To answer your question "everyone" may not be able to see the contents unless it is a public smart contract / transaction you are dealing with. in case of public transaction/contracts it is visible to that public chain. If it is a private transaction, then it is only visible to the participants of the private transaction.
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PingpongSet 36 Reputation points

2020-09-02T13:09:13.433+00:00

Hi @Shrc-MSFT ,

Thank you for your info.

I updated the link on my OP with a correct link below:
https://video2.skills-academy.com/en-us/azure/blockchain/service/send-transaction

In the example from the link, is it a public blockchain? Is it possible to choose public or private blockchain?

Is there basic information on the characteristics of the blockchain used on this link above

Shrc-MSFT 226 Reputation points

2020-09-07T11:19:34.777+00:00

Using the above link, you will be creating a private blockchain, so only participants of that blockchain can have access to the contract. On top of that, for a specific blockchain network like above, you can create a private transaction for a subset of participants in the network.

Currently we do not allow sending public transactions to ethereum mainnet.

PingpongSet 36 Reputation points

2020-09-08T06:44:52.183+00:00

Using the above link, you will be creating a private blockchain, so only participants of that blockchain can have access to the contract. On top of that, for a specific blockchain network like above, you can create a private transaction for a subset of participants in the network.

Currently we do not allow sending public transactions to ethereum mainnet.

Please check if my understanding based on your answers is correct below:

Azure Blockchain is a private blockchain. Currently, we can send private, not public, transactin to blockchain via Azure Blockchain Service.

Is there basic information on the characteristics of the blockchain used on this link above

Do we have more information on the characteristics of the blockchain via Azure Blockchain Service?

Any link would be great.

Shrc-MSFT 226 Reputation points

2020-09-15T14:42:59.963+00:00

Please follow this link - https://video2.skills-academy.com/en-us/azure/blockchain/service/consortium for concepts related to ABS.
Currently we offer quorum and hlf blockchains, hence you can go through their open source documentation as well. Using ABS, you can only send transactions within a private blockchain network.

AshokPeddakotla-MSFT 32,946 Reputation points

2020-09-16T13:49:17.267+00:00

@PingpongSet Just checking back, could you please let us know if you need further help in this matter.
Please accept helpful responses as 'Answer', which will be helpful to others as well.

PingpongSet 36 Reputation points

2020-09-19T08:38:25.137+00:00

@AshokPeddakotla-MSFT , @Shrc-MSFT

I have read the info on the section below, but I feel I have more questions.
https://video2.skills-academy.com/en-us/azure/blockchain/service

I am looking for information on the underlying blockchain used by Azure Blockchain Service. Any link would be appreciated.

Shrc-MSFT 226 Reputation points

2020-09-22T18:22:58.287+00:00

We are using Quorum blockchain, you can find details on the same here
https://consensys.net/quorum/
https://github.com/ConsenSys/quorum

AshokPeddakotla-MSFT 32,946 Reputation points

2020-09-24T17:14:06.013+00:00

@PingpongSet Did you get a chance to see the above response? Do let us know if you have any other queries.
If an answer is helpful, please "Accept answer" or "Up-Vote" for the same which might be beneficial to other community members reading this thread.
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Visibility of Source Code and Business Information in Ethereum blockchain

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