Homework on UTXO vs Account Model

Ethereum 101
#1865
  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
    The account model takes up less space, which permits more transactions per block making for a faster network.
  2. How is the account model not as great as the UTXO model for privacy?
    With UTXOs, you can send one transaction on the blockchain that has many outputs to different wallets for different values. Since the blockchain only shows the total transaction value sent, this helps mask the amount received by the multiple wallets. The account model does not have this capability and each ETH token is completely fungible. Each transaction is sent from one location to another location for the entire value shown on the blockchain.
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#1866
  • The account model doesn’t require much space as the UTXO model, why is that a benefit?

The account model stores a balance rather that UTXO’s which reduces the amount of space required to be stored in the block therefore transactions are much faster.

  • How is the account model not as great as the UTXO model for privacy?

The account model is not as great as the UTXO model for privacy because it does not allow you to send money back to yourself to increase anonymity.

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#1867

  1. Btc’s UTXO model has to store all output and all input data regard of calculating usable founds.But
    account model more like a real wallet and there is only the balance what need to store to know
    available coins.

  2. UTXO model has multiple variety of input and output in one transaction and it is not known witch one is witch.Also Ethereum is a bit more fungible,means there is no coin linked historically only wallet balances and transactions are traceable,like so users are less protected in a sense of found origination.

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#1868

  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
    A: Its a benefit because this means that you can fit more transactions into a block, because less data is needed to comprise a transaction. This also should translate to quicker transaction times and hopefully lesser transaction fees.

  2. How is the account model not as great as the UTXO model for privacy?
    A: You cannot track each individual transaction back to its origin with the account model.

Q: In this lesson Ivan speaks of BTC being non-fungible. He speaks that a particular BTC could have been involved in a scam or a hack and thus that BTC might get blacklisted from exchanges and thus be worth less value than other BTCs that haven’t been hacked. How can I tell if I hold BTC that has been part of one of these malicious means? How do you avoid buying a BTC with that bad history? And I know he was speaking in terms of 1 BTC, but I have dollar cost averaged in BTC, so my 1 BTC would be made up of many separate smaller purchases. Any help on this tough question? Thanks!

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#1869

  1. more transactions can be stored in less amount of memory. this is beneficial for faster transaction settlements

  2. all transaction history can be traced by looking at the utxos. You can see the balance you have sent and you cant send to your self using eth

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#1870
  1. Because Eth model sore the balance, so each eth is equal to another eth, while in btc model the nodes check the all the UTXOs on the blockchain to make a tx.
  2. Because on eth model the traceability is possible, you do know where the tx came from and who is paying you.
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#1871

  1. The benefit of the account model as compared to the UTXO model wrt space is that more transactions can be executed faster and with less cost than the UTXO model.

  2. The account model records how much and who a transaction was sent to and does not allow the sender to send a transaction back to the originator of the transaction which makes it easier to track who received the transaction. The UTXO model allows a transaction to be split into multiple transactions with capability for such a transaction to be sent back to the originator, therefore making the transaction more difficult to trace.

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#1872

Homework on UTXO vs Account Model - Questions

  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
    It´s good because blocks can containt more transactions and simply making faster

  2. How is the account model not as great as the UTXO model for privacy?

because in accounts models there are not change in wallet ETH, also you can not send funds to yourself and make it fungible

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#1873

  1. The account model doesn’t require as much space as the UTXO model and this is a benefit as more transactions can be added per POW block and can be processed faster with lower cost than UTXOs.

  2. In the account model each wallet updates its balance, once a transaction moves from one wallet to another and a wallet cannot send funds back to itself in a transaction; privacy is not as great in UTXOs as it can be traced easier than in a UTXO model.

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#1874

  1. its saving space so that is a benefit. It also helps with security because then people can’t look into your account and see what you have because it is technically not in your account.

  2. Like I said for the first question, people can’t see your money because it is not in your wallet.

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#1875

  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
    It´s more simple because you have a balance of your funds, there is no need to get UTxO.

  2. How is the account model not as great as the UTXO model for privacy?
    From the outside, you can see exactly how much funds were sent to an address
    You can´t send money to yourself and to another person in the same transaction.

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#1876
  1. Because it’s just updating the balances of the ETH addresses as opposed of creating “trees and trees” of UXTOs when Bitcoin is transferred.
  2. Because in BTC you can disperse a transaction to several amounts (outputs) and it’s very difficul to know which one belongs to you or to a 3rd-party and in ETH there is only one input and one output.
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#1877
  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
  1. It is more fungible, since the coins transactional history is not keep on the coin, so potentially able to store more transactions
  2. Less overhead or space needed
  1. How is the account model not as great as the UTXO model for privacy?
    Unable to track the history of transactions, so if there is a dark past with the coin, unable to identify it.
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#1878
  1. Because you can fit more transactions into one block.
  2. You can see the amount coming from one wallet to another and you can not split it, meaning you can not send money to more then 1 recipient in one same transaction (you can not send it back and forth to yourself).
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#1879

  1. A block can include more transactions which is done by reducing the block size making the process much faster on the network.

  2. As all transactions are shown on an account model history.

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#1880

The transactions only track who sent the ether and who received it updating the overall account balance.

It allows you to see where the ethers came from and where they went to. UTXOs have the potential for many inputs and outputs and it is not obvious where the coins went and who sent them and the account balance needs to be calculated.

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#1881
  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
    Account model just updates accounts. UTXO model needs to include the history of the specific UTXO
  2. How is the account model not as great as the UTXO model for privacy?
    You cannot send money to someone else and back to yourself. UTXO model shows the history of all coins. Some may have a shady past
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#1882
  1. The account model doesn’t require much space as the UTXO model, why is that a benefit?

More space in block for more transactions, smart contract info and state of smart contract info… would imagine makes network faster the less space a trx takes.

  1. How is the account model not as great as the UTXO model for privacy?

Account model always has one sender and one receiver… can’t mask transactions with multiple receivers as you can in the UTXO model.

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#1883

1. The account model doesn’t require much space as the UTXO model, why is that a benefit?
It is a benefit because it is simpler to understand and to write in code when the model is send ethereum from person A to person B and have balances update. Also it allows for more transactions to be stored in blocks and saves space for transactions to be faster.

2. How is the account model not as great as the UTXO model for privacy?
The account model is not as great as the UTXO model for privacy because you can not send back ethereum to yourself in a single transaction when sending someone else ethereum. Your ethereum will send to one address only. UTXO allows you to send to yourself and a recipient and on the outside there is no way to tell which address is owned by you if any when sending a UTXO.

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#1884
  1. Blocks are smaller in size, they can contain more transactions, blockchain is faster, storage capacity is larger.
  2. In account model every transaction is visible and can be followed, there is one input and one output for every transaction. In UTXO model there are many inputs and many outputs possible for each transaction, therefore it’s harder to track.
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