Where web3.eth.accounts.create() creates new account?

Question

I am using ganache which creates an ethereum blockchain with 10 accounts.

The blockchain created by ganache is linked with truffle's pet-shop box using web3. I want to add a new account in that blockchain. I used web3.eth.accounts.create() which returns public and private key of the newly created account.

truffle(development)> web3.eth.accounts.create()

{ address: '0x53811349479671B8230BD853184AFf1e589f5A07',
  privateKey:
   '0x68e18d97f62a803cd6f4da1f1e00cb360d217a33c67ed4120fa3947e121b5b03',
  signTransaction: [Function: signTransaction],
  sign: [Function: sign],
  encrypt: [Function: encrypt] }

But the new account doesn't appear in the ganache. I also used web3.eth.getAccounts() to show all the accounts in the blockchain but I didn't get the new account.

truffle(development)> web3.eth.getAccounts()

[ '0x7771248F9Df904f5Ee684D325E9a2B4d7A413bA0',
  '0x9a46234628ab69516C43826A967312ABeB36DcE7',
  '0x1392BC4cdc0aB295FD18bb720218079Da3f0c73E',
  '0x4459Ffc957406B682DC8Cee556c2aDf17126A147',
  '0x25Ec4525E472EAf52D2bc289F5768dd57fc0FaE5',
  '0xf7A0B489BeE0ee7F195e64d991802f65a6B5AdDA',
  '0x77175215D7A5eedb1B5551c6bfedb8d38A415388',
  '0x25F4719D0eE8cc0eBf33a7AD61C35724Bc8E1740',
  '0xb6880212A8F43D4872789f8a2aEbaf8358b32f89',
  '0x5D51F0fB4bEa6fec0334fA0c7BBC5C3a8dD42Db1',
  '0xb037075B163a6d3772AA8a401FC8A1361b970c43' ]

I can use the new account by using its private key. But where the new account is created? How I will know that the new account is part of ethereum blockchain or not which is created by ganache?

Answer 1

Ganache doesn't sync with the new accounts you generate.

Ganache gets you started with 10 accounts to choose from.

Why don't you just use one of them?

Answer 2

When you start ganache it creates you 10 accounts by default, pre-funds it with 100 ETH per account and groups those 10 accounts in a Object (let's call this accounts array because it looks similar to an array :p)

When you run the command web3.eth.accounts.create() , you are creating a new account part of the same ganache network (of course same blockchain) but it not part of the initial accounts array that ganache gave you when you started the network. So it is not pre funded (But hey, for all testing purposes 1000 ETH is way too generous)

But if you want to group all your accounts for your use case, run these commands in your truffle console:

truffle(development)> accountsArray = await web3.eth.getAccounts() // you are getting 10 pre-funded accounts

truffle(development)> newAccount = web3.eth.accounts.create() //creating a new account

truffle(development)> accountsArray.push(newAccount.address) //adding your new account to the accounts array

truffle(development)> accountsArray //you can now see your new account in this list

I hope this answer gives you a general understanding of what happens in the background :)