Sagi Kedmi

Nov 05, 2014

Bitcoin Transaction Malleability

The lies of Mt. Gox

#bitcoin #crypto

I had the opportunity of participating in Aviv Zohar’s Advanced Bitcoin Seminar at the Hebrew University.

My task was to review Christian Decker’s article Bitcoin Transaction Malleability and MtGox [1].

My talk covered low level bitcoin protocol details, some bitcoin security, transaction malleability and the MtGox incident. Here are the slides:

Once again, Nadja Kahan was kind enough to let me use some of her drawings.

For posterity, the single most useful resource I found to study Bitcoin internals was Ken Shirrifs’s blog post and his Bitcoin protocol python implementation.


  1. C. Decker & R. Wattenhofer Bitcoin Transaction Malleability and MtGox.


© 2020 Sagi Kedmi