https://en.bitcoin.it/w/api.php?action=feedcontributions&feedformat=atom&user=Sd 2026-06-21T15:06:27Z User contributions MediaWiki 1.43.8 https://en.bitcoin.it/w/index.php?title=Testnet&diff=46338 2014-04-10T19:39:03Z

<p>Sd: Updated bootstrap information /* Differences */</p> <hr /> <div>The '''testnet''' is an alternative Bitcoin [[block chain]], to be used for testing. This allows application developers or bitcoin testers to experiment, without having to use real bitcoins or worrying about breaking the main bitcoin chain.<br /> <br /> Run bitcoin or bitcoind with the -testnet flag to use the testnet (or put testnet=1 in the bitcoin.conf file).<br /> <br /> 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 coins for real money. '''Testnet3''' is the current test network. It was introduced with the 0.7 release, introduced a third genesis block, a new rule to avoid the &quot;difficulty was too high, is now too low, and transactions take too long to verify&quot; problem, and contains blocks with edge-case transactions designed to test implementation compatibility.<br /> <br /> ==Differences==<br /> * Default Bitcoin network protocol listen port is 18333 (instead of 8333)<br /> * Default RPC connection port is 18332 (instead of 8332)<br /> * Bootstrapping uses different DNS seeds.<br /> * A different value of ADDRESSVERSION field ensures no testnet Bitcoin addresses will work on the production network. (0x6F rather than 0x00)<br /> * The protocol message header bytes are 0x0B110907 (instead of 0xF9BEB4D9) <br /> * Minimum [[difficulty]] of 1.0 on testnet is equal to difficulty of 0.5 on mainnet. This means that the mainnet-equivalent of any testnet difficulty is half the testnet difficulty. In addition, if no block has been found in 20 minutes, the difficulty automatically resets back to the minimum for a single block, after which it returns to its previous value.<br /> * A new genesis block<br /> * The IsStandard() check is disabled so that non-standard transactions can be experimented with.<br /> <br /> ==Genesis Block==<br /> <br /> Testnet uses a different genesis block to the main network. You can find it [https://www.biteasy.com/testnet/blocks/000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943 here] or [http://blockexplorer.com/testnet/b/0 here].<br /> The testnet was reset with a new genesis block for the 0.7 bitcoin release.<br /> <br /> ==External links==<br /> * [https://bitcointalk.org/?topic=4483.0 Test Network forum topic]<br /> * [http://faucet.xeno-genesis.com/ Mojocoin Testnet3 Faucet]<br /> * [http://tpfaucet.appspot.com/ TP's TestNet Faucet]<br /> * [http://faucet.luis.im/ luis.im Mojocoin Testnet3 Faucet]<br /> * [http://testnet.btclook.com/ BTCLook Testnet Explorer]<br /> * [https://www.biteasy.com/testnet/blocks Biteasy.com Testnet Blockexplorer]<br /> * [http://pool.qdoop.net:18331/chain/Testnet3 Testnet3 ABE based Block Explorer]<br /> * [http://blockexplorer.com/testnet Testnet Block Explorer]<br /> * [https://sourceforge.net/projects/bitcoin/files/Bitcoin/testnet-in-a-box/ Testnet-In-A-Box self-contained testnet]<br /> * [https://github.com/freewil/bitcoin-testnet-box Forked/Updated testnet-box]<br /> <br /> [[Category:Technical]]<br /> [[Category:Developer]]</div>

Sd