Hello. Does anyone know / can show an example of how to get the wallet address from the mnemonic?

Start with this library to get the public and private (secret) key from the mnemonic: https://github.com/toncenter/tonweb-mnemonic

Then use this library to get the wallet address from the keys: https://github.com/toncenter/tonweb

If you just want to read data, the public key is enough. If you want to write data (like send transaction) then you will need the secret key

thank you very much.Ill try this

Notice that there is one nuance, the wallet address is derived from the public key + the code of the wallet

There are multiple wallet codes that people use (V2, V3, V4) so each of them would have a different address

Normally you see code trying all of them to see which one is deployed

Maybe that's why I didn't get the right result.

const keyPair = await tonMnemonic.mnemonicToKeyPair(mnemonic);
const nacl = TonWeb.utils.nacl; // use nacl library for key pairs
const tonweb = new TonWeb();

const walletm = tonweb.wallet.create({publicKey: keyPair.publicKey, wc: 0});
address = await walletm.getAddress();

this code returns incorrect address

how to change the wallet code?

i change wc: 0 to wc:3, but it return "if (wc !== 0 && wc !== -1) throw new Error('Invalid address wc ' + anyForm);"

First, let’s make sure it’s the incorrect address because there are several ways to encode the same address

address.toString(true, true, true, false)

Put the address you got in a block explorer and see it leads to the correct wallet

Or put the address here https://ton.org/address/ to compare the public key hex, that’s unique

If you don’t have the correct address, then probably the wallet code is from a different version

public keys are different😕

Open the real wallet address in TonWhales block explorer, it will show you the code. For example: https://tonwhales.com/explorer/address/Ef-KJp9REa0zDgaM6f3JW--e9gKDg1_udGBtzUVtTahmoY3t

You see on top it says “Wallet V3 (r2)”

That’s the code the wallet is using

When you put your correct wallet address in the explorer, what wallet code do you see?

V3 (r2)

What chain? Master chain or work chain?

Basic Workchain

and the address that returns with the address = await walletm.getAddress(); shows Contract Type unknown contract

🤯

Are you sure this is the correct mnemonic?

100%. thats my address

Ahh I see

It’s indeed not the default of TonWeb

The default for TonWeb is V3r1

https://github.com/toncenter/tonweb/blob/master/src/contract/wallet/index.js#L32

Ok, let’s fix it

You need this guy: https://github.com/toncenter/tonweb/blob/master/src/contract/wallet/index.js#L17

Create instance not of wallet, but of WalletV3ContractR2 instead and let’s see if it works

TonWeb API is super confusing. 🤦‍♂️ Personally I’m using ton npm which has a slightly more friendly API

If you want the slightly friendlier API that handles the multi version mess automatically, you can switch from TonWeb to this: https://github.com/tonwhales/ton

Im new in node.js, but I think that ill win it. 😁 thank you very much.

The last package has code that goes over all the versions and tries to find which one you have: https://github.com/tonwhales/ton/blob/master/src/client/Wallet.ts#L113

So you don’t need to do the manual check we did in the block explorer in the beginning

I think I’m going to write a post about it, it’s confusing AF

@prim_user write here if you can’t manage to get it working

Yes please & please let us know with a link ))🙏

@prim_user @abc9e @triangoloisoscele

I wrote the promised blog post! It's pretty cool. It explains all the weird stuff about wallets and it shows how to use a wallet from JavaScript both with TonWeb JS library and with npm ton JS library (they are both very similar, you need to choose one):

https://gist.github.com/talkol/c5e8275ff5bcb87c96d1e78135c5b12b

I submitted it right now to society.ton.org, I hope they will publish it soon. In the meantime, you can read the gist on GitHub.

Let me know if you have any feedback or anything is unclear.

Good read! What is tonweb sendmode?