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multi signature – Can I signal multisig transaction solely with non-public key in a descriptor primarily based pockets?


All public keys or redeem script/witness script is required to signal the transaction when spending bitcoin multisig UTXO.

An experiment to see if you happen to can signal the transaction with out public keys:

  1. Run bitcoind -signet=1 -rpcport=38332 -rpcuser=consumer -rpcpassword=password

  2. Create 3 wallets m1, m2 and m3

    $ bitcoin-cli -named createwallet wallet_name=m1 descriptors=false
    
  3. Get 3 public keys from every pockets:

    $ bitcoin-cli -rpcwallet=m1 getnewaddress
    
    tb1q8hz93lwkmzjq2yapxr6mnsfwjt5wvp2f5zgm98
    
    $ bitcoin-cli -rpcwallet=m1 getaddressinfo tb1q8hz93lwkmzjq2yapxr6mnsfwjt5wvp2f5zgm98
    
    {
      "deal with": "tb1q8hz93lwkmzjq2yapxr6mnsfwjt5wvp2f5zgm98",
      "scriptPubKey": "00143dc458fdd6d8a40513a130f5b9c12e92e8e60549",
      "ismine": true,
      "solvable": true,
      "desc": "wpkh([045471ed/0'/0'/1']039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716)#wht4f5zk",
      "iswatchonly": false,
      "isscript": false,
      "iswitness": true,
      "witness_version": 0,
      "witness_program": "3dc458fdd6d8a40513a130f5b9c12e92e8e60549",
      "pubkey": "039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716",
      "ischange": false,
      "timestamp": 1663309171,
      "hdkeypath": "m/0'/0'/1'",
      "hdseedid": "ccd54fe6a42efde5251f8443f1edd7ebcf25fefa",
      "hdmasterfingerprint": "045471ed",
      "labels": [
        ""
      ]
    }
    
  4. Create 2 of three multisig with the general public keys:

    $ bitcoin-cli createmultisig 2 "["039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716","0359591df29bbcdb8fb2e4cde5d92ecc8c6698d9f0ab27f2f76938cdddc2323279","037e44526a83fdb2c89de80356eeda1bbfdb3738a1b3b70c3c71ea95feaeec4046"]"
    
    {
      "deal with": "2N7WpySLj8bBGFrZE8hxQUm29ZCwaqz5FvT",
      "redeemScript": "5221039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716210359591df29bbcdb8fb2e4cde5d92ecc8c6698d9f0ab27f2f76938cdddc232327921037e44526a83fdb2c89de80356eeda1bbfdb3738a1b3b70c3c71ea95feaeec404653ae",
      "descriptor": "sh(multi(2,039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716,0359591df29bbcdb8fb2e4cde5d92ecc8c6698d9f0ab27f2f76938cdddc2323279,037e44526a83fdb2c89de80356eeda1bbfdb3738a1b3b70c3c71ea95feaeec4046))#jqk9dcqj"
    }
    
  5. Ship 0.001 sBTC to multisig deal with utilizing signet faucet: 0b30a06e2653b84b0b976559a0efc9018a6da2a4ea6c71c346496d2ac36e43b5

  6. Create a PSBT to spend this UTXO:

    $ bitcoin-cli createpsbt "[{"txid":"0b30a06e2653b84b0b976559a0efc9018a6da2a4ea6c71c346496d2ac36e43b5","vout":1}]" "[{"tb1qvl3a3l8ejuyk62qfz2kjjxdndcrk99ldxchqvx":"0.0009"}]" 
    
    cHNidP8BAFICAAAAAbVDbsMqbUlGw3Fs6qSibYoBye+gWWWXC0u4UyZuoDALAQAAAAD9////AZBfAQAAAAAAFgAUZ+PY/PmXCW0oCRKtKRmzbgdil+0AAAAAAAAA
    
  7. You’re going to get "full": false within the output if you happen to strive signing it with any 2 wallets utilizing walletprocesspsbt or individually signal, mix with combinepsbt adopted by finalizepsbt

  8. Import multisig deal with in m1, descriptor (has all public keys) in m2 and redeemscript in m3 pockets:

$ bitcoin-cli -rpcwallet=m1 importmulti '[{ "scriptPubKey": { "address": "2N7WpySLj8bBGFrZE8hxQUm29ZCwaqz5FvT" }, "timestamp":"now", "watchonly": true }]'

 [
   {
     "success": true
   }
 ]
$ bitcoin-cli -rpcwallet=m2 importmulti '[{ "desc": "sh(multi(2,039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716,0359591df29bbcdb8fb2e4cde5d92ecc8c6698d9f0ab27f2f76938cdddc2323279,037e44526a83fdb2c89de80356eeda1bbfdb3738a1b3b70c3c71ea95feaeec4046))#jqk9dcqj", "timestamp":"now", "watchonly": true }]'

 [
   {
     "success": true
   }
 ]
$ bitcoin-cli -rpcwallet=m3 importmulti '[{ "scriptPubKey": "a9149c85346a6ea0c2b6c6904e5c464df6ef84fe170587", "redeemscript": "5221039927842080cc4a22d2d4a63c13b3d9a66564e230775981f03976787afe6cf716210359591df29bbcdb8fb2e4cde5d92ecc8c6698d9f0ab27f2f76938cdddc232327921037e44526a83fdb2c89de80356eeda1bbfdb3738a1b3b70c3c71ea95feaeec404653ae", "timestamp":"now", "watchonly": true }]'

 [
   {
     "success": true
   }
 ]
  1. Attempt signing it with m1 and m2 or m1 and m3. It will not work.

    $ bitcoin-cli -rpcwallet=m1 walletprocesspsbt cHNidP8BAFICAAAAAbVDbsMqbUlGw3Fs6qSibYoBye+gWWWXC0u4UyZuoDALAQAAAAD9////AZBfAQAAAAAAFgAUZ+PY/PmXCW0oCRKtKRmzbgdil+0AAAAAAAAA
    {
      "psbt": "cHNidP8BAFICAAAAAbVDbsMqbUlGw3Fs6qSibYoBye+gWWWXC0u4UyZuoDALAQAAAAD9////AZBfAQAAAAAAFgAUZ+PY/PmXCW0oCRKtKRmzbgdil+0AAAAAAAEAcgIAAAABf9MjFLP83xBP8nl17j6VId+Y2UW/5seoLnxCqNnLOAcAAAAAAP7///8CMew0w1QGAAAWABRA3SSDttwD9s5g86KiG+bhufb1caCGAQAAAAAAF6kUnIU0am6gwrbGkE5cRk3274T+FwWH1qYBAAAA",
      "full": false
    }
    
    $ bitcoin-cli -rpcwallet=m2 walletprocesspsbt cHNidP8BAFICAAAAAbVDbsMqbUlGw3Fs6qSibYoBye+gWWWXC0u4UyZuoDALAQAAAAD9////AZBfAQAAAAAAFgAUZ+PY/PmXCW0oCRKtKRmzbgdil+0AAAAAAAEAcgIAAAABf9MjFLP83xBP8nl17j6VId+Y2UW/5seoLnxCqNnLOAcAAAAAAP7///8CMew0w1QGAAAWABRA3SSDttwD9s5g86KiG+bhufb1caCGAQAAAAAAF6kUnIU0am6gwrbGkE5cRk3274T+FwWH1qYBAAAA
    {
      "psbt": "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",
      "full": false
    }
    
    

    Nevertheless, it should work with m2 and m3:

    $ bitcoin-cli -rpcwallet=m2 walletprocesspsbt cHNidP8BAFICAAAAAbVDbsMqbUlGw3Fs6qSibYoBye+gWWWXC0u4UyZuoDALAQAAAAD9////AZBfAQAAAAAAFgAUZ+PY/PmXCW0oCRKtKRmzbgdil+0AAAAAAAAA
    {
      "psbt": "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",
      "full": false
    }
    
    $ bitcoin-cli -rpcwallet=m3 walletprocesspsbt 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
    {
      "psbt": "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",
      "full": true
    }
    
    
  2. This transaction might be finalized and broadcasted:

    $ bitcoin-cli finalizepsbt 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
    {
      "hex": "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",
      "full": true
    }
    
    $ bitcoin-cli sendrawtransaction 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
    
    6f56b1b93a6053cb9e7b91ae4786a20f8d34f1d183022142c2fbf8a16d780766
    

Tx: 6f56b1b93a6053cb9e7b91ae4786a20f8d34f1d183022142c2fbf8a16d780766

You may additionally discover this attention-grabbing: https://github.com/1440000bytes/p2p

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