Segwit Reading Assignment

Blockchain and Bitcoin 101
#3072
  1. Increasing the block size to accommodate more transactions
  2. Segwit resolves the issue of Block Malleability that is a result of an alteration in the Signature of the transaction
  3. Segwit and Lightning Network solves the issue of transaction speed and fees in BTC. Lightning Network becomes the second layer for the BTC network by settling transactions off-chain and enabling cross-blockchain swap (Atomic Swap).
  4. No they are not forced to use the Segwit roll up but its an option.
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#3073
  1. What was a proposed alternative to Segwit?
    Larger Block Size
  2. What did Segwit solve more than just the scaling issue?
    tx malleability which allowed for 2nd layer solutions
  3. How is Segwit and the Lightning network connected?
    Lightening is available now because of Segwit
  4. Are people, wallets and other services forced to use Segwit?
    No,
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#3074
  1. What was a proposed alternative to Segwit?

To increase the block size which is where bitcoin cash comes from

  1. What did Segwit solve more than just the scaling issue?

the tampering of signature on the receivers end. by removing the sig from the 1mb block.

  1. How is Segwit and the Lightning network connected?

segwit alowed you to build on top so lightning works by taking some of the capacity and doing smaller more frequent transactions.

  1. Are people, wallets and other services forced to use Segwit?

They are not but it is to their benefit to do so.

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#3075
  1. What was a proposed alternative to Segwit?

The proposed alternative to segwit was to increase the block size to 2mb, however this was considered a temporary solution and would require a larger investment in the mining equipment potentially pricing out a lot of existing miners which could end up making the blockchain more centralised with fewer miners which could potentially make it less secure.

  1. What did Segwit solve more than just the scaling issue?

It fixes for transaction malleability due to the separation of signature data from transactional data. In this case, it is no longer possible to modify the transaction ID because it is no longer calculated based on the signature data present within the transaction.

By segregating the signature data and transaction data, lightweight clients do not need to download the transactions with all signatures unnecessarily. The ransactions can be verified without the useless signatures, which allows for increased bandwidth efficiency.

An improved address format, also called a "bc1 address”

  1. How is Segwit and the Lightning network connected?

Segwit is able to support layer 2 solutions such as the lightning network allowing faster and lower cost transactions that are available through the lightning network.

  1. Are people, wallets and other services forced to use Segwit?

As SegWit adoption is still in progress as not all users of the network agree or have started to use SegWit not everyone is forced to use it.

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#3076

  1. Bitcoin Cash - Hard Fork update

  2. By moving the signature data out of the transactions Segwit solved the transaction melleability . This means that people can no longer change the transaction ID by changing the signature.

3.Segwit made the development of second layer protocols more secure, so protocols such as the lightning network can be added and also be very beneficial.

  1. No. With soft fork updates old nodes can still use the network.
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#3077
  1. What was a proposed alternative to Segwit?
    Increasing block size
  2. What did Segwit solve more than just the scaling issue?
    transaction malleability (removing signature from transaction id allowed contents of transaction to remain the same even if the signatures changed)
  3. How is Segwit and the Lightning network connected?
    The malleability fix makes it easier to design and less risky since it can rely on unconfirmed transactions.
  4. Are people, wallets and other services forced to use Segwit?
    no. it was a soft fork and the article mentioned the slow rollout for some wallets.
2 Likes
#3078
  1. block size increase, creating a hard fork
  2. malleability
  3. segwit allowed the usability of the lightning connection
    4.at the time of the article it was not mandatory for wallets to use segwit
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#3079 
  1. What was a proposed alternative to Segwit?

To increase the size of the block.

  1. What did Segwit solve more than just the scaling issue?

It solved tx malleability (change of small details) by removing signature information.

  1. How is Segwit and the Lightning network connected?

Segwit supports the development of second layer solutions.

  1. Are people, wallets and other services forced to use Segwit?

No, segwit is a softfork.

1 Like
#3080

  1. Just making the block size limit larger.

  2. It solved the tx malleability issue.

  3. Segwit allowed adoption of the lightning network and other secondary networks. Lightning network takes smaller transactions off the chain and settle when users are ready.

  4. No, it’s a soft fork so the other chain still exists.

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#3081
  1. an alternative was upping the maximum block size to 2mB.
  2. it also solved the malleability issue where the the signature is changed by the receiver so that the transaction ID hash will be different then the one originally used.
  3. SegWit supports the development of second layer protocols, such as the lightning network.
  4. No they are not. Since it was a softfork people and wallets can still use the settings that are used on the old blockchain.
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#3082
  1. A lager block size limit, witch lead to the development of Bitcoin Cash.
  2. Tx Malleability, that allowed anyone to change small details (signatures) in the tx, that changed the tx id (hash of the id) but not the content.
  3. Segwit supports the development of second layer protocols as Lightning Network, witch is taking small txs off-chain settling them on BTC’s blockchain when users are ready.
  4. No, as Segwit is a Soft Fork
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#3083

1. What was a proposed alternative to Segwit?
• The proposed alternative was to increase the block size which ultimately lead to a hard fork resulting in Bitcoin Cash.
2. What did Segwit solve more than just the scaling issue?
• SegWit solves the transaction malleability dilemma, decreases fees and supports a second layer solution and other development features.
3. How is Segwit and the Lightning network connected?
• SegWit supports the second layer solution which is the lightning network. Whereby small transactions are taken off-chain and settling them on the layer 1 blockchain when users are ready.
4. Are people, wallets and other services forced to use Segwit?
• No, it is a soft fork.

2 Likes
#3084

1. What was a proposed alternative to Segwit?
One of the alternatives to Segwit was to increase the block size limit to 2MB or even larger that causes a hard fork in the code. This occurred with BCH when it was forked from BTC in 2017, to increase the block size to 10MB instead of 1MB.

2. What did Segwit solve more than just the scaling issue?
Segwit also fixed the issue of scammers using transaction malleability tactics. The scam worked when they received an input from a sender and changed the hashing code relating to the signature of the transaction. The result of this was a situation where the sender was unaware of the transaction and couldn’t find the historical record. Then they may have decided to send another transaction to the scammer and end up losing both transactions in total. Segwit solved this issue by removing the signature input from the transaction which no longer made it part of the hash in the Tx ID and instead stored it outside the base transaction block. This prevented a scammer from changing the signature when they receive a transaction from taking place anymore and therefore made it no longer possible to scam using transaction malleability.

3. How is Segwit and the Lightning network connected?
The introduction of the Segwit update is what allowed for second layer protocols to be built which included the lighting network. The Lightning Network is another way that the bitcoin network has attempted to increase the transaction speeds and capacity. Lightning does this by taking small transactions off-chain and then settles them later in time anticipated by the users.

4. Are people, wallets, and other services forced to use Segwit?
It was a soft fork within the bitcoin code, so no wallets are no per se “forced.” However many main large brand wallets have done this by default, including the wallets Ledger, Trezor, Electrum, and also main crypto exchanges.

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#3085
  1. A proposed alternative to Segwit was to increase the size of the blocks, as carried out by Bitcoin cash.
  2. Segwit solved the issue of transaction malleability

3.Segwit supports the second layer and lightning network is a second layer solution.
4. People, wallets and other services are not forced to use Segwit. Segwit is also a soft fork. However wallets such as Trezor, Ledger are adding Segwit support.

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#3086
  1. To increase the block size
  2. It solves the transaction malleability issue
  3. Segwit created space for the second layer solution
  4. No it was a soft fork, that means, you still can operate under the rules before the update
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#3087
  1. Hard fork
  2. Full blocks and TX malleability
  3. Lightning Network is a second layer solution and Segwit did able to implement second layer solutions.
  4. No, it’s transparent for the network. It’s the same chain (soft fork)
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#3088
  1. What was a proposed alternative to Segwit?

It was proposed that the block size be increased, which would lead to a hard fork.

  1. What did Segwit solve more than just the scaling issue?

Segwit also fixed transaction malleability

  1. How is Segwit and the Lightning network connected?

Segwit allows for a second layer solution.

  1. Are people, wallets and other services forced to use Segwit?

No, it is not a requirement, as it was a soft fork.

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#3089

1 Increase the block size.
2 Transaction malleability, Lightning network, multiple transactions in a block,
3 Segwit enables a lightning network.
4 No. It was a soft fork and old transactions and addresses can still be used.

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#3090

1_ increasing the block size

2_ transaction malleability

3_ Segwit makes designing second layer protocol safer and easier. Lightning network can take small tx offchain, until both parties are ready.

4_ adopting segwit is not mandatory as it is a soft fork but the upsides far outshine the downside.

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#3091

  1. The proposed alternative to Segwit was to increase block size.

  2. Segwit also solved transaction malleability by removing the signature from the base transaction block.

  3. The Lightning Network is pedicated on Segwit’s code change.

  4. No, It was a soft fork. old transactions can be used as well.

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