Questions tagged [testnet]

This tag should be used for questions regarding the third Bitcoin testnet. The testnet is a network separate from the main Bitcoin network that allows developers to attempt modifications of the bitcoin protocol safely and test in-development software without risking money.

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Dust threshold for Testnet

I want to find a dust threshold following this answer: https://bitcoin.stackexchange.com/a/86069/134293 Actually I have a list of transactions coming from listsinceblock in which there are Testnet ...
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Does testnet block 855996c9444827112b68c0606d8dfec62385d1b3448e412bc1c721633a641669 discard the block reward?

I am poking around in the testnet blockchain, and I saw a block mined recently where the outputs added up to just 0.04953672 BTC. Since there is no output for the 50BTC block reward, does that mean ...
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Unknown new rules activated (versionbit 1) when running Core v22.0.0 on testnet [duplicate]

I have got "Unknown new rules activated (versionbit 1)". I am running Bitcoin Core v22.0.0 on testnet. This seems to be the last version as of today (April 17 2022). I am running a taproot ...
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Looking for Lightning Testnet Wallet with Lnurl capabilities

I'm looking to test an lnurl withdrawal. I created an lnurl withdrawal url using the OpenNode api. I have an htlc.me testnet lightning wallet. But it doesn't seem to have a way to input lnurls. Is ...
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Private keys for mainnet vs testnet

If I have valid private key to use on Bitcoin mainnet, can I use the same key to generate addresses and spend on testnet? If so, is this encouraged, or should one generally keep separate keys to use ...
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"Non-mandatory-script-verify-flag (Invalid Schnorr Signature)" on testnet

I'm using the FROST algorithm to create a threshold signature for some taproot output (using this code). When I tried using it on the testnet, it works most of the time but from time to time I would ...
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Port 9735 for both MAINNET and TESTNET

The default port for the Lightning Network is 9735. This is the case not only for nodes on MAINNET, but also for nodes on TESTNET. Why is that? What's the purpose of this? Wouldn't it make more sense ...
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Bitcoin transactions towards and from a Taproot

I am trying to solve a problem that was given to me as study material for a coding test. The problem requests the following: Create two Bitcoin transactions in testnet, one spending towards a Taproot ...
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Bitcoin testnet addresses

Why bitcoin addresses in testnet are not the same as in mainnet? For example ethereum address in mainnet can be used in testnet's (ropsten, rinkeby).
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How can I add a testnet wallet to my Binance account?

I have a Binance account with some real BTC in its wallets. I have created a testnet wallet in Binance Wallet Chrome extension and claimed some BNB, so now I have 1 BNB in the testnet wallet. I'd like ...
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BTCPay Server with lightening over testnet - Payment issue

I have recently deployed btcpayserver over testnet to demonstrate the user experience to my colleagues. Lightening Implementation: LND Following are setting Every thing seems ok I can see the service ...
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Understanding zmq notification output

I wrote a blockchain listener program for my testnet node. It's working fine and the output size of new transactions matches the ones monitored by blockchain.com. The output looks like this: No: 476 ...
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Help decoding transaction on bitcoin testnet

I'm trying to learn more about bitcoin and I'm trying to decode a transaction I made to myself on testnet and I can't seem to figure out a couple of things Here is the output of getrawtransaction: ...
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How to get all ip address of nodes in bitcoin testnet

There are many service to get all fo the ip address in bitcoin mainnet but I can't find the similar way to get all ip address in testnet.Is there a way to do it?
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Issue when broadcasting Taproot transaction to older nodes

I'm trying to broadcast a Taproot transaction to random nodes across the network (Testnet3). When I try to broadcast to older nodes like 0.18.0, I get the error "Witness version reserved for soft-...
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3 votes
1 answer
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Where can I find taproot spend examples on testnet/signet?

I am in the middle of writing some Taproot libraries and would like some testnet/signet p2tr spends. Is there an easy way to find them? Most explorers don't have any filters like that. Even a list of ...
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Connection Reset after sending mempool message

I build a python script to talk to bitcoin test nodes. When I'm sending mempool messages, my connection is getting is reset. Also sometimes when connecting to Jimmy Song's testnet node (testnet....
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Can a wallet start with 20 and how can it be generated?

Someone claims a wallet can start with 2 on btc mainnet. How possible is dat. I knw 2 is the testnet pay 2 script wallet type. If its possible. How can it be generated?attached is an example of the ...
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bitcoin-qt -testnet wallet dumped error EXCEPTION: NSt8ios_base7failureB5cxx11E

I got an error message but don't understand what to do now, to fix this. ************************ EXCEPTION: NSt8ios_base7failureB5cxx11E CDataStream::read(): end of data: iostream error ...
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Why i can't get more node address in bitcoin testnet?

I get a address list from DNSseed of bitcoin testnet,and i try to connect these node and send getaddr message to them,but all addr message replied to me contain only one address and the address is ...
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3 votes
1 answer
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History of Bitcoin's Networks

Bitcoin main net was launched on January 3, 2009 at 19:15:05 UTC. But what is the history of the two other network options in Bitcoin: testnet and regtest? I think testnet is on version 3, what was ...
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2 answers
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What are the various Bitcoin nodes available which I can connect to via my lightning node

I am thinking of running my own lightning node in testnet. Going through the tutorials it seems the lightning node needs to be connected to bitcoin node inorder to get connected to bitcoin network. ...
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1 vote
1 answer
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What is the BOLT 10 realm byte for testnet and signet DNS node discovery?

BOLT 10 describes a node discovery mechanism based on DNS. The query semantics include a realm byte that is 0 by default (Bitcoin). What is the realm byte for testnet and signet? This question was ...
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2 votes
2 answers
121 views

Should you be able to run a mainnet c-lightning node in parallel with a signet c-lightning node? What about an alternative Lightning implementation?

Running mainnet, testnet and signet Bitcoin Core full nodes on the same machine/same VM works fine. Is running say a c-lightning mainnet node in parallel with a c-lightning signet node on the same ...
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Select a fee based on confirmation time. How to implement it?

I'm developing a client on nodejs which connect to a bitcoin core node through JSON-RPC. I want the user to be able to select the fee they want based on the time (the same way bitcoin core GUI does it)...
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How to make a taproot transaction with bitcoin-cli?

Can you give a simple step-by-step example for a taproot transaction with bitcoin-cli on Testnet?
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Blockcypher new transaction request returning more than input and output

I am new to Bitcoin and Blockchain, and Blockcypher.. I am trying to use Blockcypher APIs to create (and sign) and send a transaction (on testnet). The request i provide has 1 input and 1 output, but ...
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i received BTC on testnet and the sender said that it is de-activated..it will be activated after I pay a certain fee? [duplicate]

a trader sent me 2 bitcoins on testnet to show that i will receive more after they activate it...I have to pay a certain fee before they activate it
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P2TR outputs on testnet [duplicate]

Anthony Towns shared that Taproot is activated on Testnet. I am not sure if we can create P2TR outputs easily on Testnet right now based on this Q&A by Michael Folkson: How can I spend from a P2TR ...
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How can I mine a block, in C#, on a new Testnet network where no other miners exist?

I want to demonstrate how to use NBitcoin or the most simple C# function to collect transactions for use in a block then sign that block submit it into the Bitcoin-QT network client on the RPC port? ...
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1 vote
1 answer
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How to test RBF on Testnet?

I'd like to do RBF testing on testnet. I'd like to simulate a transaction with too-low fees, aka "stuck" transaction, and then RBF it in various ways. Problem is, all testnet transactions ...
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3 votes
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Bitcoin-qt getnewaddress returns address starting with 2

I am expecting it starts with '3' the the results below: getnewaddress "" "p2sh-segwit" 2NFcKJTPZs1syYhwaBkXty6Vt6FEKxD3HTC Is this because I am running on a private block chain?
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2 answers
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Testnet3 app will not sync to peers

I was just trying to connect testnet3 to my own testnet node through the "trusted peer" and "skip regular peers" settings, but it seems that in this way it cannot connect to a ...
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4 votes
1 answer
326 views

No path found when connected to the same node

I'm trying to understand how the lightning network works in practice, so I figured I'd just use some Electrum wallets on testnet. So here's what I did: set up two wallets funded them with some tBTC ...
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Changes for bitcoin.conf file and details on the testnet network bitcoin-core

I have installed bitcoin core testnet and it is now synchronized with the network after 24 hours. My question is about bitcoin.conf file. I will tell you the procedure I used to install: I created the ...
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How to leave the Bitcoin testnet?

My BitcoinCore client says it's on the testnet. I've done nothing to configure this. How do I change it to do real Bitcoin transactions and wallets? Also, every time I shutdown my PC the client had to ...
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4 votes
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dumpwallet output documentation & explanation?

Where do I find complete documentation on what the console command "dumpwallet" output means? Sample of my testnet output: # Wallet dump created by Bitcoin v0.21.0 # * Created on 2021-01-...
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What is the maximum channel capacity allowed on the Bitcoin testnet?

Using Electrum desktop wallet connected to the testnet, when trying to open a channel with the amount exceeding 0.16777215 BTC I get the following: Could not open channel. Exception('Requested ...
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Error while broadcasting the raw bitcoin testnet transaction

I am trying to create a simple P2PKH raw bitcoin testnet transaction from the scratch. Here is the information about the transaction: hash of the UTXO consumed - ...
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4 votes
1 answer
669 views

Can you break down what data is encoded into a bech32 address?

Can you break down what data is encoded into a bech32 address? e.g. bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4 How do bech32 addresses on testnet, regtest, signet compare?
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1 vote
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Why is the source code fee calculated higher than the current bitcoin fee amount?

In python bit (https://github.com/ofek/bit/), when sending a message, it is properly 80 bytes or less (https://developer.bitcoin.org/devguide/transactions.html) fee is If it is a 4-byte character ...
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2 votes
3 answers
1k views

Selling Test bitcoin

I have a random and maybe crazy question. Can I sell test coins? Someone recently told me that Advanced Market Terminal is buying them. It is strange to me Since they should hold no value.
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How to generate or add balance in my btc testnet address

I am trying to add btc testnet, I have read that these following sites offers testnet btc but upon checking their servers were down https://bcoin.io/ https://bitpay.com/insight/#/ALL/mainnet/home ...
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Tiny 1-block forks in blk.dat files

I just completed parsing the Testnet3 Bitcoin blockchain stored in the blk.dat files into a database. Since I was using multi-processing to parse several files at the same time, I didn't add the ...
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3 votes
1 answer
3k views

How can I get more than 1 BTC on testnet?

The only way I know of to get testnet coins is through faucets such as the following. https://testnet-faucet.com/btc-testnet/ https://testnet-faucet.mempool.co/ https://kuttler.eu/en/bitcoin/btc/...
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cpuminer: Running two nodes -The requested URL returned error: 500 Internal Server Error, json_rpc_call failed, retry after 30 seconds

I'm trying to mine new blocks using cpuminer. My blockchain network runs on localhost on the testnet network with two nodes. When I'm trying to mine the blocks I'm receiving the following error: * ...
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5 votes
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Will there be a testnet4? Or do we not need a testnet reset once we have Signet?

The last testnet reset was for the current testnet3 back in 2012 (not including segnet which was a testnet for SegWit before SegWit was activated on mainnet). Are we due another testnet reset? Or is ...
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944 views

How do I get set up on Signet?

I have heard about Signet here and here. How do I get set up on Signet?
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What can I expirement with BitcoinCore on my own?

I have a simple faculty assignment where I have to do some experiments with transactions or experiment with the Bitcoin protocol or maybe with wallet code. Work on that assignment shouldn't last more ...
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How do I start -testnet in -deprecatedrpc to test a script?

I hope all is well during our COVID-19 pandemic. My question: How do I start "bitcoind -testnet" in "-deprecatedrpc=signtransaction" mode? Do I simply start it the same way without ...
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