Error while executing transfer

[kpv9]

I am trying to execute packages/example but it is failing while transferring the tokens from alice to bob. The error is transaction reverted. What am i supposed to do?

[ibudisteanu]

Are you sure you have an updated ethereum node? I recommend you to install ganache

[kpv9]

Are you sure you have an updated ethereum node? I recommend you to install ganache

yes the ethereum node is updated. I am unable to try it on ganache as i dont know how to enable websocket in ganache-cli.

[ibudisteanu]

Again, try using ganache. It is really easy to set up. After you start it, increase the gas limit for the block and then set the port in the anonymous-zether

[kpv9]

hey i have completed the setuo for ganache and having new error . I am attaching the screenshot of the error i am facing. please help me to solve it.

[ibudisteanu]

You are doing it well. Your sender account doesn't have enough funds (probably it has 0 eth). The thing is that when the transfer is called it requires eth gas for the sender. Just give some eth from ganache to the sender address.

[benediamond]

This is because gas is not free in your environment, and Anonymous Zether generates a random account to send from. please see the discussion here https://github.com/jpmorganchase/anonymous-zether/issues/24#issuecomment-595441559 and below! thank you.

[benediamond]

The quickest way to fix it is to use instead of throwaway, a fixed account, which you have pre-funded with ether.

[kpv9]

Thank you so much @benediamond and @ibudisteanu . It worked perfectly.

[benediamond]

@kpv9 good to hear!

[benediamond]

actually, @kpv9 @ibudisteanu, can you do me a big favor, and tell me whether the issue is solved by adding 'gasPrice': 0, to line 275? https://github.com/jpmorganchase/anonymous-zether/blob/8cafe19e2fb6a56f8c45a4718c3fc2b24e59ccee/packages/anonymous.js/src/client.js#L275 if this works, it might be the easiest solution; in that case i'll push a fix for it. thanks.

[kpv9]

no it didn't work if we use throwaway.

[benediamond]

ok interesting, thanks for giving that a try.

[kpv9]

@benediamond hey can you please give me a javascript in which Alice transfers b amount confidentially to Bob and then that b ZTH are burnt back in Bob's account.

[ibudisteanu]

Just follow the example. It is more than clear.

    const alice = new Client(web3, deployed, accounts[0]);
    await alice.register();
    await alice.deposit(100);
    const bob = new Client(web3, deployed, accounts[0]);
    await bob.register();
    alice.friends.add("Bob", bob.account.public());
    await alice.transfer('Bob', 10);
    await bob.withdraw(10);

[kpv9]

hey, now i want to check the balance of bob's ethereum account before transfer and after burn has executed. which address to use in getBalance()?????

[ibudisteanu]

@kpv9 as far as I know, the tests code is a simplification of the entire process because it is used only for testing. I recommend you just use the console.log(bob.account._state.available) for printing out the balance.

I know that the Burn is sending the burned coins to the msg.sender namely to the address which is making the burn transaction namely accounts[0], where accounts = web3.eth.getAccounts();

[kpv9]

Thank You so much.

console.log(bob.account._state.available)

This worked.