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<H1>[ZcF-general] Grant project progress report: Riemann</H1>
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<B>James Prestwich</B>
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<A HREF="mailto:general%40lists.zfnd.org?Subject=Re%3A%20%5BZcF-general%5D%20Grant%20project%20progress%20report%3A%20Riemann&In-Reply-To=%3CCAOP2CbwPj_rHy68ovKHY2TBaxbGa8_sBe9qeokD3qr%2BD%3D6vMEA%40mail.gmail.com%3E"
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TITLE="[ZcF-general] Grant project progress report: Riemann">james at prestwi.ch
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<I>Thu Jan 3 19:08:15 EST 2019</I>
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<PRE>Dear all,
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We expected grants to be awarded sooner, so by the time the grants were
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announced, we had largely achieved our original goals
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<<A HREF="https://github.com/ZcashFoundation/GrantProposals-2018Q2/issues/19">https://github.com/ZcashFoundation/GrantProposals-2018Q2/issues/19</A>>.
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Riemann <<A HREF="https://github.com/summa-tx/riemann">https://github.com/summa-tx/riemann</A>> supports Sapling and
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Overwinter. Recent work includes the release of riemann-tx==1.1.6, which
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includes a sapling transaction construction example
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<<A HREF="https://github.com/summa-tx/riemann/blob/d4b251e3972ff8614082de90f65ffa890b7b1e74/riemann/examples/sapling_example.py">https://github.com/summa-tx/riemann/blob/d4b251e3972ff8614082de90f65ffa890b7b1e74/riemann/examples/sapling_example.py</A>>
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and
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a number of sapling-related bugfixes
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<<A HREF="https://github.com/summa-tx/riemann/pull/91">https://github.com/summa-tx/riemann/pull/91</A>>. The transaction construction
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example was used this afternoon to build c895...5b6d
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<<A HREF="https://explorer.zcha.in/transactions/c8951c6c488a13b9bad1b7a76af70d30a4d7b80abd503143b0824dc98bc95b6d">https://explorer.zcha.in/transactions/c8951c6c488a13b9bad1b7a76af70d30a4d7b80abd503143b0824dc98bc95b6d</A>>
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to
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sweep one of my old wallets.
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With respect to proof verification, we are currently blocked, and have been
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from some months. We need access to the Sapling and Sprout proving and
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verifying keys in an easily consumable fashion. If anyone familiar with the
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file formats involved can grab and document those group elements, please
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reach out directly.
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Going forward, we'll update with at least one significant usage example
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each month.
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Best,
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James
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