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Unanswered Questions

83 questions with no answers
4 votes
0 answers
675 views

Bitcoinj: How to fix error "You should use Context.propagate() or a ContextPropagatingThreadFactory"

I'm using bitcoinj from a Scala application... and when I start it, I always get the following errors: [error] o.b.c.Context - Performing thread fixup: you are accessing bitcoinj via a thread that ...
3 votes
0 answers
2k views

How to sign bitcoin raw transactions with Python offline

I have a raw bitcoin transaction created using createrawtransaction unsigned_tx = "...
3 votes
0 answers
742 views

Can I quickly check the cofactor of secp256k1 is 1

I was wondering if there was a quick way to check that the group underlying the elliptic curve secp256k1 was indeed cyclic with the usual point G a generator. I am given the prime number underlying ...
3 votes
0 answers
158 views

Does a bitcoinj SPV node forward transactions for itself?

The bitcoinj library offers a rather convenient WalletAppKit class, which I'd like to accept payments from customers. In order to facilitate the payments I'd offer the customers to send the ...
3 votes
0 answers
257 views

Bitcoin-qt database for BitcoinJ downloadBlockChain()

I am using bitcoinJ to develop a bitcoin based payment module for my project. I have the complete block chain downloaded/in sync with the network on the bitcoin-qt client. Is there a way I can use ...
2 votes
0 answers
46 views

How can I create a taproot address that time-locks the bitcoin sent to it until a specified blockheight?

I'd like to create a taproot address that timelocks any funds sent to it until a specified blockheight in the future. How can I do this using Bitcoin Core's QT Console? I am also curious to know about ...
2 votes
0 answers
27 views

No inv messages from inbound nodes

I'm writing a tx relay-only node that can accept inbound connections and make outbound ones. Just for research. What I'm seeing that on inbound nodes the initial handshake completes and the connection ...
2 votes
0 answers
176 views

spend founds from p2wsh address,non-mandatory-script-verify-flag (Signature must be zero for failed CHECK(MULTI)SIG operation) (code 64)

i want spent coin from p2wsh address on btc testnet3 network, i use bitcoinj 0.15.2 build transaction and sign it, use 2/3 multiSig when i send raw transaction by bitcoin core 0.17.0 command line by ...
2 votes
0 answers
325 views

Multisig signrawtransaction fails

I have 3 private keys (a,b,c) which belong to an address (2 of 3) from which I want to spend funds using RPC commands. I´ve started with generating the redeemScript using createmultisig() and the pub ...
2 votes
0 answers
340 views

Broadcasting signed transaction from Watching wallet using bitcoinj

I am working with watching wallet and Offline wallet using bitcoinj, I created Watching Wallet using tpub key of Offline Wallet I am receiving payment on watching wallet Fine, now I want to ...
2 votes
0 answers
69 views

Broadcast a transaction, issue with Context missing from thread created by BitcoinJ

In this code i receive an already signed transaction in the form of a byte array and i would like to broadcast it to the Bitcoin network. override fun onHandleIntent(intent: Intent?) { org....
2 votes
0 answers
90 views

Why is my node being flooded with bitcoinj clients from 138.197.0.0/16?

I'm not the only one to have noticed this (discussions on reddit here and here): out of 70 or 80 incoming connections on my bitcoin core full node, about 50 are from just one single network (138.197.0....
2 votes
0 answers
151 views

Specific fee in transaction

Is there any possible way to send transaction with specific fee (not fee per kb) from wallet in bitcoinj? Where should I look to find a solution :)? My code: Address address = Address.fromBase58(...
2 votes
0 answers
125 views

Java bitcoinj: semantics of 'decompress' on encrypted key

Calling the decompress method on an encrypted ECKey object yields an ECKey object which has no private key (only public). I personally would have expected to get the same encrypted key in uncompressed ...
2 votes
0 answers
187 views

Java bitcoinj: Failure of getPrivateKeyEncoded or getKey?

I have the feeling something is not right with the method getPrivateKeyEncoded (which returns a DumpedPrivateKey object) of the ECKey class. If I attempt to recover the orginal key from the ...

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