Hard Fork Question

[jackg]

I have 2 things I need to know about the  fork that I don't think have been documented (or I haven't yet found them).

1. Can transactions be reused on both chains? If I send bitcoin from one address that has a private key with both types of bitcoin on it, can that transaction be cloned and broadcast to another chain?

2. What is the probability of the fork to produce an actual split in the chain? As I understand it, bip91 was supposed to help prevent this?

[achow101]

I have 2 things I need to know about the  fork that I don't think have been documented (or I haven't yet found them).

By "the fork", I assume you mean the Bitcoin ABC hard fork.

1. Can transactions be reused on both chains? If I send bitcoin from one address that has a private key with both types of bitcoin on it, can that transaction be cloned and broadcast to another chain?

No, they have implemented two way replay protection.

2. What is the probability of the fork to produce an actual split in the chain?

100%. The fork is scheduled to occur when the median time is at or after August 1st, at 12:20 PM UTC.

As I understand it, bip91 was supposed to help prevent this?

Not this one. BIP 91 was supposed to prevent BIP 148 from activating and potentially causing a fork. Bitcoin ABC's fork is not BIP 148 (in fact it doesn't even have a BIP). BIP 91 itself could have caused many forks.

[jackg]

I have 2 things I need to know about the  fork that I don't think have been documented (or I haven't yet found them).

By "the fork", I assume you mean the Bitcoin ABC hard fork.

1. Can transactions be reused on both chains? If I send bitcoin from one address that has a private key with both types of bitcoin on it, can that transaction be cloned and broadcast to another chain?

No, they have implemented two way replay protection.

2. What is the probability of the fork to produce an actual split in the chain?

100%. The fork is scheduled to occur when the median time is at or after August 1st, at 12:20 PM UTC.

As I understand it, bip91 was supposed to help prevent this?

Not this one. BIP 91 was supposed to prevent BIP 148 from activating and potentially causing a fork. Bitcoin ABC's fork is not BIP 148 (in fact it doesn't even have a BIP). BIP 91 itself could have caused many forks.

Ah, thanks for clarifying that for me Achow. I must have mixed a few things up about this fork (with previous ones that were stopped from taking place).