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Off-Blockchain Scaling: Duplex Micropayment Channels - Dr. Christian Decker, ETH

  • Apr 27, 2016 · 6:30 PM
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A Fast and Scalable Payment Network with Bitcoin Duplex Micropayment Channels

Bitcoin does not scale, because its synchronization mechanism, the blockchain, limits the maximum rate of transactions the network can process. However, using off-blockchain transactions it is possible to create long-lived channels over which an arbitrary number of transfers
can be processed locally between two users, without any burden to the Bitcoin network. These channels may form a network of payment service providers (PSPs). Payments can be routed between any two users in real time, without any confirmation delay. More information can be found in his paper:

Dr. Christian Decker is a researcher from the Distributed Computing Group at ETH Zurich. 

He wrote various papers on Bitcoin, Bittorrent and other types of distributed networks (

Door opening: 18:30

Talk start: 18:45

Room sponsor: Lucas Betschart

PS: If you'd like to work in Blockchain, checkout our Job Board:

Join or login to comment.

  • Jonathan C.

    Hi Lucas, I noticed the donation address was removed:

    I'd like to contribute, but want to confirm it is still okay? Thanks.

    1 · April 27

    • Jonathan C.


      April 27

    • Peter B.

      I missed the box, can you publish the correct address again please?

      1 · April 28

  • Christian D.

    Thanks for the opportunity to present some of the stuff I've been working on :-)

    5 · April 28

  • Roger D.

    Great talk, no unnecessary complexity

    4 · April 28

  • Dario

    Two take aways - 1) key mgmt seems like a "big deal" and 2) duplex micropayment channels need routing protocols :) :) [3) I'll be helping organise a bitcoin/blockchain/crypto thing END.MAY BEGIN.JUNE in Brugg, Aargau at the Technopark] that's three things

    4 · April 27

  • Lucas B.

    Don't forget to answer the question when you RSVP so it's easier to plan for me, thanks! :)

    March 8

    • Lucas B.

      Zentrum Karl der Grosse has space for up to 120 people, so I'll see where we go afterwards. If we aren't too many it would be Schoffel yes, since it's close :)

      March 8

    • Lucas B.

      Cancel or move would make sense probably. Sorry I had to take the day that works regarding the room, speaker and my own schedule

      March 8

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