29 Jun '15, 3pm

Reviewing the Bitcoin Piñata

Reviewing the Bitcoin Piñata

TL;DR: Nobody took our BTC. Random people from the Internet even donated into our BTC wallet. We showed the feasibility of a transparent self-service bounty. In the style of Dijkstra: security bounties can be a very effective way to show the presence of vulnerabilities, but they are hopelessly inadequate for showing their absence. What are you talking about? Earlier this year, we released a Bitcoin Piñata . The Piñata was a security bounty containing 10 BTC and it's been online since 10th February 2015. Upon successful mutual authentication, where the Piñata has only a single trust anchor, it sends the private key to the Bitcoin address. It is open source , and exposes both the client and server side of ocaml-tls , running as an 8.2MB MirageOS unikernel. You can see the code manifest to find out which libraries are involved. We put this online and invited people to attack ...

Full article: https://mirage.io/blog/bitcoin-pinata-results

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