[zapps-wg] Completion of the Powers of Tau

Sean Bowe sean at z.cash
Fri Apr 13 00:18:06 EDT 2018


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Hey everyone,

I'm proud to announce that the Powers of Tau ceremony has been
concluded. The final parameters are available over BitTorrent:

https://s3-us-west-2.amazonaws.com/powersoftau-transcript/powersoftau.torrent

SHA256:
phase1radix2m0:
d8a877af288346ec5c67a7e28feb85bdccfa693d0a26c43776ec139da42e76ad
phase1radix2m1:
0cd121e4f5656b3ba00a1f6d997a4f8b0ebb4876d5671c4db77d37cba7afb2e0
phase1radix2m10:
efd5963d83ea29d8bb6f5ac8922d40cfcbc18769686fcfeb33b80d27a84749d7
phase1radix2m11:
a52646f8347f6119aab6c0922e63b609578d0aa436ee2de1a2edb7b18ab45907
phase1radix2m12:
c412697f608dd56d3cc5871d6962fda30bb032352a4f5d7c100d7ed684614575
phase1radix2m13:
a20e6c6a9934dc43f7d77121ee6214c7ee564789d1b9736174d881091da11387
phase1radix2m14:
e48d1e478d6b8a89514abbb2eec4ea760b92d286d85795915ce41d5e5b3952b1
phase1radix2m15:
90a4fdbad4714f3126cd3665f6e229d935813c6d60f990c8e9b879ed16ddf933
phase1radix2m16:
fc56a479a6f3d4ef423d649a138f366b922a2f95554d14622f365350f9a92cc0
phase1radix2m17:
1bb2de121836af52ab572d16a4310f2d6ef7bf1015398266786dd123ef1ca1e2
phase1radix2m18:
2d194998ef41354b08a51d86b62d561899646e3fdfc068959fcf406ac60db128
phase1radix2m19:
45342fcb7454304a75af7b5e75f175df4c82e19ee9957c9d0c49350d1f4ee088
phase1radix2m2:
6e204d12904e505f3102829372a4c9b3ad6751de2e04e89ae01fb6094890d668
phase1radix2m20:
cf2cf318721a55d4d744ca2ea6f1a2b3f3eea914c40ea39e674ba73963f3bea8
phase1radix2m21:
90bf83253252120d8162c3c68687ef4c7da94127e2d67683c94a61ac4b471182
phase1radix2m3:
aff7485842e7bbbc1a9f35d9fc1982bbe4a7e5edd446cd74679ee7f6a00491ee
phase1radix2m4:
509e64e8dab6634dd487904107ff2f868a476199cde031964f4db0c7f8ce1009
phase1radix2m5:
5761fb27aae8bc00835e2dac36b2511d086a280bf01f6a43a81ec35ad876fe00
phase1radix2m6:
02f352b91801bfc98f43caac4fac344e7292e12b1ba3d943b85b08092c24987a
phase1radix2m7:
b24921fba6c4f442f9bd948254b108c9765028812eeba9da9fa06db32244e25b
phase1radix2m8:
8abbaf691a73258b03bb38d100e9b822bd6fa0bc845cafdd9e5fa692f7911f76
phase1radix2m9:
cc7154639f43cdac46ff1b2b17c6fef38815ca12fecb7e1537a36c92dd9ad362

The protocol transcript (which allows you to verify the parameters,
and compare with the attestations) is also available over BitTorrent:

https://s3-us-west-2.amazonaws.com/powersoftau-transcript/powersoftau-transcript.torrent

SHA256:
transcript:
605609b98e339554832394181a3aa5880c48cffb0b603ca0dd7ce47760ca2cbe

It has also been uploaded to the Internet Archive:

https://archive.org/details/transcript_201804

The transcript can be verified using a tool we've constructed:

https://github.com/ebfull/powersoftau/blob/master/src/bin/verify.rs

As before, we're hosting the attestations of participants here:

https://github.com/ZcashFoundation/powersoftau-attestations

We plan to make an announcement soon on the Zcash Foundation blog. I'd
like to thank everyone who helped make this possible. All of the
participants did a wonderful job, and I'm very happy with the diversity
and openness of the ceremony. Many members of the crypto and
cryptocurrency communities participated or played witness to what took
place. I'd like to thank Jason Davies for doing a wonderful job as
a coordinator for the final months.

I would also like to thank my co-authors Ariel Gabizon and Ian Miers
for their invaluable work on the paper. And last but not least, a huge
thanks to the Zcash Foundation!

Sean Bowe
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