Bitcoin Malleability

Some of our users (buyers and sellers) have noticed strange behaviour on the bitcoin network. Similar to what happened in 2014, bitcoin has a new malleability problem. A transaction could be modified (resulting in a different TXID) in a way that it’s still valid, and some jokers are using this to double random transactions on the network.

This could result in:

- you seeing ‘unknown transaction’ when trying to look up your own withdrawal

- a deposit you make to BitBargain being ‘doubled’ but one part remaining unconfirmed forever

- after making a withdrawal, the other party could become suspicious of you trying to double spend

Rest assured that:

- the bitcoins are *SAFE* on BitBargain.

- it’s not a BitBargain issue, it can happen with any transaction on the network

- it will be fixed (Bitcoin Core developers are working on it already)

More information:

http://blog.coinkite.com/post/130318407326/ongoing-bitcoin-malleability-attack-low-s-high

http://cointelegraph.com/news/115374/the-ongoing-bitcoin-malleability-attack

http://www.newsbtc.com/2015/10/04/bitcoin-takes-a-back-seat-in-australia-merchants-stop-accepting-it/

https://www.reddit.com/r/Bitcoin/comments/3nfb2y/eli5_for_double_spends_bitcoin_being_sent_twice/

https://en.bitcoin.it/wiki/Transaction_Malleability