Testnet is a network separate from bitcoin that allows developers to attempt modifications of the bitcoin protocol safely.

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Testnet version history

From Bitcoin Wiki: Testnet There have been three generations of testnet. Testnet2 was just the first testnet reset with a different genesis block, because people were starting to trade testnet ...
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How can one simulate and analyze attacks on the Bitcoin network?

Are there any other platforms or tools beside TestNet where I can simulate and analyze various attacks like double spending (finney/block withholding attacks etc.)?
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bitcoin-0.9.3 won't syncup on TESTNET stuck at height 26859

Downloaded the latest bitcoin core tar ball 0.9.3. New install for test and development. This thread relates only to the TESTNET, I haven't tried on the production network. When launching the bitcoind ...
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Is it possible to run a simple attack on a previous version of the client in testnet mode?

I need to simulate an attack locally or in testnet (if possible) for academic purpose, on an old and bugged version of the bitcoin core client. I am in posses of test BTC in the last version. I want ...
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How do you access the NXT testnet to test out new features of the system?

I downloaded the new nxt platform and want to try out the testnet system for new features. How do you get the testnet running on your local system?
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Do testnet networks require the same main network fee?

As in the title, I'm wondering if testnet networks always require the same fee. I know the coins aren't worth any thing, so it doesn't matter if I have to pay the fee or not, but I'm just curious.
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BlockChain.info testnet wallet and API

Does blockchain.info provide wallets and API service for testnet? This information is quite hard to find from their site.
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50 views

Key exported from BitcoinJ is different from the key shown by bitcoind

I am quite new to Bitcoin. I am trying to use Bitcoinj with regtest mode. I have created the following application: public class TestBitcoinj { private final static BigInteger ONE = new ...
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How do I run Armory Testnet on Win7 x64 using Bitcoin Core 0.9.3 using remote datadir?

Trying to use the testnet which I have no problems with using Bitcoin Core 0.9.3 with command: Bitcoin-qt.exe -testnet -datadir=f:\data\bitcoincore But running Armory using the Testnet icon attempts ...
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Local Testnet3, where do the new coins get sent to?

I'm trying to setup a local testnet with multiple nodes. Currently I have three nodes, and their mining powers are almost the same. When I use listaccounts RPC call, all the wallets have 0 coins. ...
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Bitcoin testnet: “Bitcoin is downloading blocks…” and other problem

I'm trying to setup a local testnet with multiple nodes. Currently I have three nodes, and their mining powers are almost the same. Things have been quite ok so far, except some problems that I need ...
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Are bitcoin testnet addresses taxed?

Here is a testnet address I've been experimenting with, Here is some test BTC leaving the address, I didn't initiate the transfer though, is this a feature of the testnet to keep the faucets stocked ...
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180 views

How can I do CPU mining on testnet?

I'm trying to do cpu mining on testnet to debug coinbase transactions in my application. Tried running GUI miner, I get the below output: 2014-07-31 11:31:51: Running command: poclbm.exe ...
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Error pushing hex of tx, generated with bitcoinjs 1.0, on testnet

I'm new to bitcoin programming and decided to give it a try with the release of bitcoinjs-lib 1.0. Here is how I generate the hex for the transaction var bitcoin = require('bitcoinjs-lib'); var key ...
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190 views

creating our own coin - connection refused error

We are trying to create our own currency. We first started with testnet. The aim is to generate a genesis block and testnet did it very well. However, although we had connection between two ...
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152 views

Tx to a multisig address in testnet not working

i've sent a tx to a newly created multisig address on testnet, but i dont understand why i didnt get the funds yet. What i've done to so far was create 3 separate wallets, and get the 3 pubkeys to ...
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Which altcoins have testnets?

Bitcoin can be run on a public testnet (by using a different port than the real Bitcoin network). This is very useful for development, because you can test software handling Bitcoin without handling ...
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RPC calls fail in testnet mode, but not normal mode?

I'm running bitcoind on a debian web server. If I run in normal mode, i.e. "bitcoind -daemon," then it seems to work completely fine. [birdseye]$ ./bitcoind -daemon Bitcoin server starting ...
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bitcoind in testnet is not synchronizing

I installed bitcoind into Linux. I'm running it in testnet mode but it is not synchronizing as it is not downloading blocks. I have the following in bitcoin.conf: rpcport=8332 # Needed for testnet ...
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Bitcoind doesn't find transactions / synchronize / update until last block from Testnet

I set up bitcoind as server. It downloads the testnet blockchain but it is inconsistent with public data: http://blockexplorer.com/testnet/q/getblockcount 182951 (As of 18/02/14) And bitcoind ...
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1k views

How to establish connection for mining testnet blocks on newly created altcoin

I was trying to clone an altcoin for educational purposes. I am total newby and I've got some plans to implement different PoW and continue working on cryto-currencies. I followed the cloning guide ...
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Double spend attempts examples on testnet?

Where can I find some double spend attempts examples on testnet? Can anyone refer me some TXIDs with double spends on testnet? EDIT: I need some example in which an outpoint was intended to be used ...
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How to use Bitaddress.org and Blockchain.info with Testnet coins?

I was asking myself the same question posed at How to run a bitcoind on a hosting securely? At the above posting, George Pearce provided a good suggestion. However, I have questions but ...
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Bitcoin Testnet is not working [closed]

I am new to Bitcoin Development Environment. Trying to setup testnet environment with the help this blog post. Bitcoin Folder ~/.bitcoin $ ls bitcoin.conf chainstate db.log peers.dat blocks ...
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Cannot synchronize with Bitcoin in testnet mode

I downloaded Bitcoin-QT for Windows 7 into: MYUSERNAME/Downloads/bitcoin-0.8.6-win32/bitcoin-0.8.6-win32 I want to run Bitcoin in testnet mode, so I created bitcoin.conf with only the following ...
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Cannot get Bitcoin-QT to run in testnet mode

I downloaded Bitcoin-QT for Windows 7 into: MYUSERNAME/Downloads/bitcoin-0.8.6-win32/bitcoin-0.8.6-win32 I want to run Bitcoin in testnet mode, so I created bitcoin.conf with only the following ...
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Looking for testnet coins [duplicate]

Having a hard time getting the amount of testnet coins I need. Anyone know a way of getting a rather large amount of testnet coins? If you can spare some:mvhTdSXUhs812vY5t1StAKohwid5GwALgK
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Completely confused with mutisig address and scripts

I used the guide, how to make escrow from bitcoin console. Here are my transactions in testnet: tx1 tx2 I am confused about ScriptPublicKey in tx1: OP_HASH160 ...
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Can an address have negative balance?

This address:n1JagbRWBDi6VMvG7HfZmXX74dB9eiHJzU (on testnet) has a negative balance of -0.27388239 according to: https://www.biteasy.com/testnet/addresses/n1JagbRWBDi6VMvG7HfZmXX74dB9eiHJzU, namely, ...
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Nonstandard script - TX rejected

I am experimenting in testnet with nonstandard scripts. There was a transaction, created by me, with the following vout script: OP_HASH256 ...
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1k views

Easiest way to accept BTC and test

We are building an online game and planning to enable our players to play for bitcoins. Therefore, we need to enable players to deposit and withdraw bitcoins. Which way is the easiest to start ...
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dumpwallet always corrupts my wallet

I have repeated this process a few times, always with the same error. In one terminal, ./bitcoind -testnet in another ./bitcoind -testnet getnewaddress mgj4Y8AvckxborhQzqFAhppcGVGFExqJvB ...
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Block explorer with testnet raw hex data

Blockchain.info allows you to look at the raw hex of a transaction. But it doesn't have testnet functionality. Blockexplorer allows you to look at testnet, but I can't find a way to show the hex dump. ...
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How can I find the “real” difficulty on testnet?

As is well known, testnet has a "20-minute rule": if no block is found within 20 minutes, the mining difficulty drops to 1 until a block is found. From some experimentation, it appears that ...
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Not generating any blocks

I am running bitcoind, and I have cgminer solo-mining on it. I am mining on Testnet3. My hash rate (this is an OLD computer) is ~800Khash/s, so according to one online calculator I should be ...
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Anyone successfully mining bitcoins in Testnet3?

I've been chugging away on multiple machines for days, and while I get a lot of 'unconfirmed' and 'orphaned' and 'immature' blocks, nothing lands in my wallet. Anyone else having this problem? From ...
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209 views

What happens if you send BTC to a testnet address?

What happens if you send real Bitcoins to a testnet address?
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How can I tell when bitcoind has found a block?

I'm using the traditional bitcoind -gen on the testnet to mine some test bitcoins. I did this on one machine for a few hours, and stopped when I found a faucet. Later though, I magically obtained 50 ...
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Is there any where to get free testnet Bitcoins?

I'm building a project with bitcoins and want to test it with testnet. However, I don't have any testnet bitcoins, and despite the difficulty being less than 100 usually, I still haven't been able to ...
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What does the text strange or nonstandard type mean in the output of a transaction?

I am trying to learn bitcoin by writing a script that finds a balance of a set of addresses by scanning all raw transactions. In the following link, the output at index 1 has no address and is ...
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Why are the first 514 blocks on testnet3 dated much earlier?

This is kind of an obscure question, but I'm curious. In playing with Testnet (version 3), I noticed an odd jump in the block times. Blocks 0 through 513 have block times from 2-3 February 2011. ...
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What is my chance to find a block on a TestNet ?

My gethashespersec is 4806082, on the TestNet what is my real chance to find a block ?
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How many coins been mined on the **Testnet** ?

How many coins been mined on the Testnet ? How can I check it ? Thanks in advance.
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Mining on the testnet: how to configure bitcoin-qt?

I am trying to generate some coins with the client ./bitcoin-qt -testnet -gen How can I config to what address the money go ? p.s.: actually I got notification for mining success but no coins in ...
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575 views

How to check testnet address balance

I have an address mpc1rKeaMSCuQnJevMViLuq8uWjHwgdjiV I check it via json rpc and get balance = 4.6 with 6 confirmations When I check ...
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114 views

(How) can I run standard clients on a “toy” block chain?

Say I build some software around the Bitcoin system and I would like to try stuff without having to earn real BTC first, and without having to employ a lot of hashing power to grow the block chain. ...
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How do I get testnet block height?

Like I would do wget -O - http://blockchain.info/q/getblockcount 2>/dev/null for the main net.
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Which testnet am I on?

How can I know which testnet am I on? I just ran bitcoind -testnet, and I would assume it would connect to the most recent one, but is there a way to know it?
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How to use bitcoinjs with TestNet?

One of my colleagues is trying to use bitcoinjs with TestNet, but apparently it doesn't like TestNet headers, so it doesn't work. Is there any way to make to use bitcoinjs with TestNet? Is there some ...
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Why must generated coins mature 120 blocks before they can be spent?

I mine bitcoin testnet blocks and I find some blocks with difficulty 1. Some examples: I mined these blocks: Block 1 Block 2 Why must generated coins mature 120 blocks before they can be spent?