![]() ![]() This means that the mainnet-equivalent of any testnet difficulty is half the testnet difficulty. Minimum difficulty of 1.0 on testnet is equal to difficulty of 0.5 on mainnet.The protocol message header bytes are 0x0B110907 (instead of 0xF9BEB4D9).A different value of ADDRESSVERSION field ensures no testnet Bitcoin addresses will work on the production network.Bootstrapping uses different DNS seeds.Default RPC connection port is 18332 (instead of 8332). ![]() ![]() Default Bitcoin network protocol listen port is 18333 (instead of 8333).On 21 December 2015, SegNet was deployed to test the Wuille's Segregated Witness proposal. It was introduced with the 0.7 release, introduced a third genesis block, a new rule to avoid the "difficulty was too high, is now too low, and transactions take too long to verify" problem, and contains blocks with edge-case transactions designed to test implementation compatibility. Testnet2 was just the first testnet reset with a different genesis block, because people were starting to trade testnet coins for real money. There have been three generations of testnet. Run bitcoin-qt or bitcoind with the -testnet flag to use the testnet (or put testnet=1 in the nf file). This allows application developers or bitcoin testers to experiment, without having to use real bitcoins or worrying about breaking the main bitcoin chain. Testnet coins are separate and distinct from actual bitcoins, and are never supposed to have any value. The testnet is an alternative Bitcoin block chain to be used for testing. ![]()
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