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# How to use Bitcoin Core CLI to create Mixin Safe?

### Prepare the Bitcoin Core wallet

* Install [Bitcoin Core](https://github.com/bitcoin/bitcoin/releases); please install version 25.0 and above.
| Or you can try to [use Bitcoin Core GUI to create Safe?](/en/article/how-to-use-bitcoin-core-gui-to-create-safe-1y3cm89/)
* Follow the [documentation guide](https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md) to compile and configure the wallet.
* Go to the src directory and run the bitcoin client in the background by typing the command in the terminal:
  
  ```bash
  ./bitcoind -daemon
  Bitcoin Core starting
  ```

|| Managing the Safe with Bitcoin Core doesn't require synchronizing Bitcoin node data!

### Create a Mixin Safe

1. Log into the Safe Dashboard and create a New Safe **"+ New Safe"**.

2. Name the Safe and select Bitcoin network.

3. Select Bitcoin Core as the private key wallet.
![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-12720_659jvo.png)

It requires generating two wallets on Bitcoin Core when you select Bitcoin Core as the Owner's Safe:

* Key wallet that manages keys;
* Script wallet for multi-signature transactions, managing UTXOs.

3.1  Switch to Terminal and input the following command to create a wallet:

```bash
$ ./bitcoin-cli createwallet mixin-safe-holder
{
   "name": "mixin-safe-holder"
}
```

3.2  To generate the address, please run the following command: 

```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe-holder getnewaddress safe legacy
1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ
```

* Parameter safe: address label
* Parameter legacy: it must be in a legacy format; otherwise, the parameter signmessage will not be available.


3.3  Query the wallet address based on the address label:

```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe-holder getaddressesbylabel safe
{
   "1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ": {
      "purpose": "receive"
    }
}
```

3.4  Get the public key 
```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe-holder getaddressinfo 1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ
{
  "address": "1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ",
  "scriptPubKey": "76a914af5454090a5fed618162431ddc57f67c671e82fa88ac",
  "ismine": true,
  "solvable": true,
  "desc": "pkh([e8a47a9c/44'/0'/0'/0/0]03b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186c)#n9cxzr97",
  "parent_desc": "pkh([e8a47a9c/44'/0'/0']xpub6CKHxzDBDi8rRzUcRwaYhHgN6nRNuFSqh7dH3CTgzb2Qa7CN6DGzvTJpnoCgCYj9S5JsnXkbiCGgGWjh7egGBouV533cmY7xy7wUBuQGfvX/0/*)#c7p9wm6z",
  "iswatchonly": false,
  "isscript": false,
  "iswitness": false,
  "pubkey": "03b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186c",
  "iscompressed": true,
  "ischange": false,
  "timestamp": 1686997004,
  "hdkeypath": "m/44'/0'/0'/0/0",
  "hdseedid": "0000000000000000000000000000000000000000",
  "hdmasterfingerprint": "e8a47a9c",
  "labels": [
    "safe"
  ]
}
```

3.5  Copy-paste the pubkey to the Safe Dashboard and tap **Next** to save: 

![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-61538_1c9ouxq.png)

4. Set up members

Add a family member, friend, or coworker you trust as a member and set up a reasonable threshold.

5. Preview and create the Safe

6. Active the Safe

6.1  Decode Safe data 

![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-13611_1f1aaam.png)

Copy the script data on step 1 from the Safe Dashboard and decode the data with the following command:

```bash
$ ./bitcoin-cli decodescript 2103b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186cac7c210261300cb233f092c6c2f787139624b88ea4c774e779b3a257b36a2fcf186a09a7ac937c82926321026e37ea6e1e9a018753e3289387306d8d605351803497021c1a7cf7e6c0a8dab6ad02b001b29268935287
{
  "asm": "03b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186c OP_CHECKSIG OP_SWAP 0261300cb233f092c6c2f787139624b88ea4c774e779b3a257b36a2fcf186a09a7 OP_CHECKSIG OP_ADD OP_SWAP OP_SIZE OP_0NOTEQUAL OP_IF 026e37ea6e1e9a018753e3289387306d8d605351803497021c1a7cf7e6c0a8dab6 OP_CHECKSIGVERIFY 432 OP_CHECKSEQUENCEVERIFY OP_0NOTEQUAL OP_ENDIF OP_ADD 2 OP_EQUAL",
  "desc": "raw(2103b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186cac7c210261300cb233f092c6c2f787139624b88ea4c774e779b3a257b36a2fcf186a09a7ac937c82926321026e37ea6e1e9a018753e3289387306d8d605351803497021c1a7cf7e6c0a8dab6ad02b001b29268935287)#q9ngh6sm",
  "type": "nonstandard",
  "p2sh": "3J7w4UTU99Q55q3nxse4qGece52Nc21LKD",
  "segwit": {
    "asm": "0 0f338779ff70a9233ba47940b9136ef7f6f5c7524b49bb01ad66baad9d8864dc",
    "desc": "wsh(thresh(2,pk(03b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186c),s:pk(0261300cb233f092c6c2f787139624b88ea4c774e779b3a257b36a2fcf186a09a7),sj:and_v(v:pk(026e37ea6e1e9a018753e3289387306d8d605351803497021c1a7cf7e6c0a8dab6),n:older(432))))#p6vc2x03",
    "hex": "00200f338779ff70a9233ba47940b9136ef7f6f5c7524b49bb01ad66baad9d8864dc",
    "address": "bc1qpuecw70lwz5jxway09qtjymw7lm0t36jfdymkqddv6a2m8vgvnwqfnt0pq",
    "type": "witness_v0_scripthash",
    "p2sh-segwit": "342sprEcLKM3sYrCfPtdLemasXwYnAukT3"
  }
}
```

6.2  Create script wallet

```bash
$ ./bitcoin-cli -named createwallet wallet_name="mixin-safe" disable_private_keys=true blank=true load_on_startup=true
{
  "name": "mixin-safe"
}
```

6.3  Import descriptors to the script wallet

Take the desc under segwit in the data decoded in step 6.1 and import it into the script wallet as a descriptor in the format `'[{"desc": "xxx","timestamp": "now", "internal":false}]'`:

```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe importdescriptors '[{"desc":"wsh(thresh(2,pk(03b08eeab9826f10b68569ff9af26ea350675e9d5cf9274c1990cfe5d7cf2b186c),s:pk(0261300cb233f092c6c2f787139624b88ea4c774e779b3a257b36a2fcf186a09a7),sj:and_v(v:pk(026e37ea6e1e9a018753e3289387306d8d605351803497021c1a7cf7e6c0a8dab6),n:older(432))))#p6vc2x03","timestamp":"now","internal":false}]' 
[
  {
    "success": true
  }
]
```

6.4  Sign data

![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-14118_14ywssq.png)

Sign the data copied from step 3 on Safe Dashboard in the following format: 

```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe-holder signmessage 1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ APPROVE:c09c6f5f-4461-46a2-a172-4cd970aab955:bc1qpuecw70lwz5jxway09qtjymw7lm0t36jfdymkqddv6a2m8vgvnwqfnt0pq
IOs73u6gnEy9hIIH6zpEXLtaQncAUYkCk6hV8LQxwdxvQz3jOLbEDXJpo669P6sXQVHHpmnlbDbt22HHdgigeYs=
```

Please note that the parameter “1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ” after signmessage is the key wallet address.

6.5  Active the Safe

Copy the 6.4 Signed data to the step 5 input box and tap the Activate button: 

![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-14339_1lhd1k6.png)

```
Wait about 30 seconds for the Safe to be activated successfully; you can check if the Safe deposit address is the same![]() script wallet address:
```

```bash
$ ./bitcoin-cli --rpcwallet=mixin-safe getaddressesbylabel ""
{
  "bc1qpuecw70lwz5jxway09qtjymw7lm0t36jfdymkqddv6a2m8vgvnwqfnt0pq": {
    "purpose": "receive"
  }
}
```


![](https://storage.crisp.chat/users/helpdesk/website/71991a4db339f000/screenshot-2023-07-13-at-14951_1wq2wa1.png)

---

Then you can deposit BTC to the Safe's address.