bitcoin core – How to import address by private key using importmulti

adminMay 12, 2024

problem. importmulti The function has many parameters, and they are more difficult to understand than the parameters of other Bitcoin RPC-API functions. People who are not skilled in modern cryptography have a hard time understanding how to use it. importmulti function.

Here’s a task that demonstrates the problem: Bitcoin Core v.0.19.1 has two wallets: wallet1 – This is the wallet with the private key for export. wallet2 – An empty wallet whose PK+address needs to be obtained from wallet1.

So wallet1 has a Bitcoin address generated by: getnewaddress.

(root@wallet1 ~)# bitcoin-cli getaddressinfo 3M5e4QMBUYtpEewwuuoWCArpiM2fT4KEDy

  "address": "3M5e4QMBUYtpEewwuuoWCArpiM2fT4KEDy",
  "scriptPubKey": "a914d4b1b498c8be8813273937b834be6d9d1f488b9087",
  "ismine": true,
  "solvable": true,
  "desc": "sh(wpkh((675dc179/0'/0'/0')02607cb6c05a575fd040498ec8c44eabfa2a4f0fc320aeacf494a77b3a408d84af))#r6dvu4wk",
  "iswatchonly": false,
  "isscript": true,
  "iswitness": false,
  "script": "witness_v0_keyhash",
  "hex": "00144c88353345f2e03abc8e96b818fd030c3c9f59ab",
  "pubkey": "02607cb6c05a575fd040498ec8c44eabfa2a4f0fc320aeacf494a77b3a408d84af",
  "embedded": 
    "isscript": false,
    "iswitness": true,
    "witness_version": 0,
    "witness_program": "4c88353345f2e03abc8e96b818fd030c3c9f59ab",
    "pubkey": "02607cb6c05a575fd040498ec8c44eabfa2a4f0fc320aeacf494a77b3a408d84af",
    "address": "bc1qfjyr2v697tsr40ywj6up3lgrps7f7kdtvw6mnu",
    "scriptPubKey": "00144c88353345f2e03abc8e96b818fd030c3c9f59ab"
  ,
  "label": "",
  "ischange": false,
  "timestamp": 1589545405,
  "hdkeypath": "m/0'/0'/0'",
  "hdseedid": "7cf768d4050dc142a69a149666798cc434045c6c",
  "hdmasterfingerprint": "675dc179",
  "labels": (
    
      "name": "",
      "purpose": "receive"
    
  )


(root@wallet1 ~)# bitcoin-cli dumpprivkey 3M5e4QMBUYtpEewwuuoWCArpiM2fT4KEDy
Kwngf5FSYmHM5oPHjSoKxtHWUxXiQ5YN5ZR6shmzkYpMMftBh92c

I tried to import that address into wallet2, but it failed.

(root@wallet2 ~)# bitcoin-cli importmulti '( "scriptPubKey":  "address": "3M5e4QMBUYtpEewwuuoWCArpiM2fT4KEDy" , "timestamp":"now", "keys":  "Kwngf5FSYmHM5oPHjSoKxtHWUxXiQ5YN5ZR6shmzkYpMMftBh92c":0   )' '"rescan": false'

result
(
  
    "success": false,
    "error": 
      "code": -1,
      "message": "Missing required fields"
    
  
)

What is the correct way to import that address using importmulti? Please show me an example.

adminMay 12, 2024