Bitcoin

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

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.

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