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<H1>[ZcF-general] March & April Update: implementing anonymous payment channels</H1>
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<B>J. Ayo Akinyele</B>
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<A HREF="mailto:general%40lists.zfnd.org?Subject=Re%3A%20%5BZcF-general%5D%20March%20%26%20April%20Update%3A%20implementing%20anonymous%20payment%0A%20channels&In-Reply-To=%3CCAJVTvHuSLn-XH5Qd5crhn%2BkZ00gmqYY65U9CXrdcEYstYy1ZeQ%40mail.gmail.com%3E"
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TITLE="[ZcF-general] March & April Update: implementing anonymous payment channels">ayo at boltlabs.io
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<I>Fri Apr 26 16:24:02 EDT 2019</I>
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<PRE>Progress as of April 26, 2019
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We submitted an initial zip proposal for adding BOLT support
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<<A HREF="https://github.com/boltlabs-inc/zips/blob/master/zip-bolt-support.rst">https://github.com/boltlabs-inc/zips/blob/master/zip-bolt-support.rst</A>> to
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Zcash ZIP process at the end of March. The proposal describes the features
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we need for building channels using shielded addresses (and transparent for
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backward compatibility with Bitcoin). Our goal within the next few weeks is
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to complete the initial proposal with more details regarding the use of
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shielded addresses only as we work towards NU3 deployment.
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Therefore, the current reference implementation for testnet uses shielded
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inputs with multi-sig T-addr for funding the channel. Adding an OP_BOLT
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opcode to our Zcash fork for checking the correctness of channel opening
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and closing (but evaluating how much we can do off-chain and if we can rely
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only on standard signatures for on-chain transactions). We are also
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revising the abstract protocol and how its instantiated on a currency to
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simplify potential deployment.
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Lastly, still working on a bare-bones reference implementation in Python
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for creating and managing payment channels on top of Zcash. It is currently
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in a private repo that will be made public once v1 is complete (hopefully,
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soon) and it builds on a Python/C FFI libolt
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<<A HREF="https://github.com/boltlabs-inc/libbolt">https://github.com/boltlabs-inc/libbolt</A>> interface and riemann
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<<A HREF="https://github.com/summa-tx/riemann">https://github.com/summa-tx/riemann</A>> package (many thanks to James
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Prestwich). Rust or Go Bolt implementation will follow.
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Please reach out at <A HREF="/mailman/listinfo/general">info at boltlabs.io</A> if there are any questions.
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Thanks,
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Ayo
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</PRE>
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