Bitcoin Testnet vs Regtest - Reading Assignment

#1

Welcome to this reading assignment, answer questions below and feel free to discuss the assignment here.

  1. What is testnet in Bitcoin?
  2. What is regtest mode?
  3. What is the advantage and disadvantage of each? (TRY TO THINK FOR YOURSELF)
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#2
  1. What is testnet in Bitcoin?
    it’s a public test-blockchain where the bitcoin does not have read world value that works similarly as the mainnet blockchain. In this way it is safe to test out some functionality.

  2. What is regtest mode?
    Regtest (regression test) mode creates a local private blockchain where you can adjust the parameters to what you want. You usually use this when it is not needed to communicate with other peers and blocks.
    An example what you can do with the parameters is you can create blocks instantly

  3. What is the advantage and disadvantage of each? (TRY TO THINK FOR YOURSELF)
    advantage regtest: you don’t have to wait until blocks are mined / you don’t need a network connection to the internet
    disadvantage regtest: you cannot test functionality that requires connections to random peers or blocks

    advantage testnet: it is much closer to the functionality of the mainnet
    disadvantage testnet: everybody can connect so a lot of “testing” is being done so the network is not really thrustworthy if you test your application on this network.

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#3
  1. What is testnet in Bitcoin?
    This is a full publicly used Bitcoin implementation but it is not part of the mainnet.

  2. What is regtest mode?
    This also runs a full implementation of Bitcoin but it exists privately only on your local computer. This allows for greater speed and control over your testing environment.

  3. What is the advantage and disadvantage of each? (TRY TO THINK FOR YOURSELF)
    Testnet: Pro simulated experience to mainnet / Con Need faucet satoshis and more time
    Regtest: Pro complete control for speed and testing / Con Not a realistic experience of mainnet

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#4
  1. What is testnet in Bitcoin?
    Testnet is a test network where I can test my applications with reduced risks and limitations. Compared to the main network (mainnet), it is much cheaper, transactions cost just a few satoshis that I can get on a faucet.
    It is a global testing environment which mostly mimics mainnet.

  2. What is regtest mode?
    Regtest mode is a short expression for “regression test mode”. It is a local testing environment in which I can almost instantly generate blocks on demand for testing events, and can create private satoshis with no real-world value.

  3. What is the advantage and disadvantage of each?

  • As @Capaburro said it well, it seems that testnet looks much more like the mainnet (as bitcoin.org says, that it “mimics” mainnet).

  • The advantage with regtest is I choose when I want to create a new private chain of blocks, and it gives me complete control over the environment. It is also the way developers usually prefer to develop new application. Furthermore, it seems that it easier and costs absolutely nothing to get some satoshis, compared to testnet where we need to find a faucet to get some real satoshis (that have almost no value of course).

Does someone has a good explanation of what Remote Procedure Calls (RPC) are? :thinking: :slight_smile:

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#5
  1. What is testnet in Bitcoin?
    Testnet in Bitcoin is the public test network for Bitcoin, with real users and miners running their nodes in test mode. In the testnet your “testnet bitcoins” don’t hold any value and there are less restrictions, e.g. users/developers can test more functions that are not available in the mainnet.

  2. What is regtest mode?
    The regtest mode is a very useful mode that users/developers can use in their bitcoin “nodes”. In this mode the bitcoin daemon creates a blockchain entirely on the computer, not connected to the network and the user controls the mining times, therefore not a real “node” connected to a network. There are special rules for the mining, like the user needing 100 confirmations to be able to use the mined bitcoin (e.g. 101 blocks allows the user to access the first 50bitcoins mined in the genesis block)

  3. What is the advantage and disadvantage of each?
    The regtest mode allows for a very fast and efficient way to test functionality that doesn’t require a real network, e.g. constructing and validating transactions or blocks, but has the disadvantage of not being a real blockchain with PoW. In the testnet things are much slower because it simulates the real mainnet with ~10min block times and its a real network with real network problems (delays, package corruption, package loss…), but on the positive side allows to test the entire functionality the developer has been working on (e.g. broadcasting the transactions), not just things that can run without a network like in regtest mode.

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#6

Testnet is a way to see how application might work on the bitcoin network before sending real money. It includes block times and interaction with other nodes which act much like regular nodes except for a few small exceptions.

Regtest is a test blockchain only held on the users computer. It therefore does not require interaction with other nodes and block times are completely under the control of the individual developer. This allows for faster experimentation, which is sequestered from the rest of the ecosystem.

Testnet is better once a application is close to deployment and the creator of said application wants a better understanding of how it might interact in the actual bitcoin ecosystem.

Regtest is better when the application is earlier on in its development, as one does not have to interact or wait for outside nodes to verify blocks.

PS. Why is it that teachable never records when I am finished with a module. Of course I can remember where I am myself, but if I want to get a certificate of completion this is going to a problem. This has happened with other coursed I’ve taken here as well. And yes, I am logged in. Cheers.

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#7

Check your cookies settings, might be something to do with the browser cookies being deleted or not created.

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#8
  • What is testnet in Bitcoin?

A set of nodes with bitcoind running with a -testnet flag enabled.

  1. It has some restrictions disabled
  2. coins can be obtained from faucet so they do not have any value.
  3. I guess, no mining happens since standard tx checks are disabled (I might be misunderstandign the manual. @ivan, please correct me if I’m wrong). But transactions still get distributed in the decentralized manner.
  • What is regtest mode?

A mode with instant transactions. When the entire network is your localhost.

What is the advantage and disadvantage of each?

Regtest is safer and faster.
testnet has other people around, so it’s more true-to-life. Also you can share your dApp so that other people in the community could check it out and give feedback. Also you can learn by interacting with other users (in your class, for example) without putting real money at risk.

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