How to use Bitcoin Core CLI to create Mixin Safe?
Prepare the Bitcoin Core wallet
- Install Bitcoin Core; please install version 25.0 and above.
- Follow the documentation guide 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:
./bitcoind -daemon
Bitcoin Core starting
Create a Mixin Safe
- Log into the Safe Dashboard and create a New Safe "+ New Safe".
- Name the Safe and select Bitcoin network.
- Select Bitcoin Core as the private key wallet.
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:
$ ./bitcoin-cli createwallet mixin-safe-holder
{
"name": "mixin-safe-holder"
}
3.2 To generate the address, please run the following command:
$ ./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:
$ ./bitcoin-cli --rpcwallet=mixin-safe-holder getaddressesbylabel safe
{
"1Gz4GoSjNV8MxLFt8bE8JTfqJp6b2bXhvZ": {
"purpose": "receive"
}
}
3.4 Get the public key
$ ./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:
- Set up members
Add a family member, friend, or coworker you trust as a member and set up a reasonable threshold.
- Preview and create the Safe
- Active the Safe
6.1 Decode Safe data
Copy the script data on step 1 from the Safe Dashboard and decode the data with the following command:
$ ./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
$ ./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}]'
:
$ ./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
Sign the data copied from step 3 on Safe Dashboard in the following format:
$ ./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:
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:
$ ./bitcoin-cli --rpcwallet=mixin-safe getaddressesbylabel ""
{
"bc1qpuecw70lwz5jxway09qtjymw7lm0t36jfdymkqddv6a2m8vgvnwqfnt0pq": {
"purpose": "receive"
}
}
Then you can deposit BTC to the Safe's address.
Updated on: 29/02/2024