I ended up solving this by wiring up a utxo provider that's populated from
a different "online/hot" application. This allowed me to use
Wallet#completeTx without throwing an insufficient funds exception and
still meet my requirements.
On Saturday, May 19, 2018 at 3:31:42 PM UTC-4, Tyga wrote:
>
> i am also working on the same thing signing offline transaction and
> broadcast it using watching wallet but i am having trouble in broadcasting
> it my method is differ from yours and i am using Java, here is my code
> snippet
> *Creating tx hash from Watching Wallet*
>
> private static void createUnsignedTx()
> {
> try
> {
>
> sendRequest = SendRequest.to(Address.fromBase58(params,
> "mzA8jspyG5gjpZG8bvJWEatv3TAUTxJA8F"), Coin.parseCoin("0.01"));
> sendRequest.signInputs = false;
> sendRequest.tx.getInputs();
> System.out.println("Transaction Hash: " +
> sendRequest.tx.getHashAsString());
> }
> catch (Exception e)
> {
> System.err.println(e.toString());
> }
> }
>
> *Signing hash from Offline wallet*
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> *public static void signTransaction(){ // message (hash) to be signed
> with private key //String msg =
> "15953935a135031bfec37d36a9d662aea43e1deb0ea463d6932ac6e537cb3e81";
> String msg =
> "d2553a4da83207a0b2959c6a6be9f3b5a298dcbc095d64b887030b4765f6c361"; //
> unsign tx hash from watching wallet // an example of WiF for private key
> (taken from 'Mastering Bitcoin') //String wif
> ="KxFC1jmwwCoACiCAWZ3eXa96mBM6tb3TYzGmf6YwgdGWZgawvrtJ"; ECKey ecKey =
> new ECKey(); String wif = ecKey.getPrivateKeyAsWiF(params); //
> creating a key object from WiF DumpedPrivateKey dpk =
> DumpedPrivateKey.fromBase58(null, wif); ECKey key = dpk.getKey(); //
> checking our key object String check =
> key.getPrivateKeyAsWiF(params); System.out.println(wif.equals(check));
> // true // creating Sha object from string Sha256Hash hash =
> Sha256Hash.wrap(msg); // creating signature ECKey.ECDSASignature sig
> = key.sign(hash); // encoding byte[] res = sig.encodeToDER(); //
> converting to hex String hex = DatatypeConverter.printHexBinary(res);
> System.out.println("Signed Hash: " + hex); } }*After that i don't know
> how to broadcast it and i don't know either that i am on the right track ?
>
>
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