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Blockchains: what’s the big deal?

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People trust the transaction security. Why?

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The blockchain: a road test

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Works even under immensely hostile conditions

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The blockchain: a road test

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There are now more blockchains to choose from

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, but also

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• Startup • Supply chain tracking • Uses Ethereum

provenance.org

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The other large-scale example

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• Started after the DigiNotar hacker(s) hacked a CA and issued a wildcard SSL cert for Google

• Securing the internet’s encryption infrastructure using blockchain technology (actually Merkle trees, but whatever)

• https://www.certificate-transparency.org/

Certificate transparency

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Proof-of-concepts and investigations

2020

• A digital currency back-end for use by central banks

• PoC for the Bank of England by George Danezis and Sarah Meiklejohn

• Peer-reviewed paper at http://arxiv.org/abs/1505.06895

• Code available on Github at https://github.com/gdanezis/rscoin

RsCoin

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• Builds on work done for the Bank of England

• Blockchains using normal languages, REST APIs

• We’re working to open source and set it up so others can use it

Chainspace.io

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