gt; So, by convention, we should post the hashes of those files here right
> away, and make a best effort to mirror them publicly (each one is like
> a gigabyte, I think).
>
> What does the initial challenge file consist of? Could you post the
> hash of it here?
>
> Cheers,
>
I've posted two new utilities to the repository:
* a `new` tool which constructs the initial challenge file
* a `verify_transform` tool which loads the `challenge` and `response`
files, performs verification, and outputs a `new_challenge` file
Sean
On Wed, Nov 8, 2017 at 8:05 PM, Peter Todd via
e it's also the case that
>>> a) The "response" file from each person is roughly the same as the
>>> "challenge" file for the next participant, and
>>> b) The response/challenge files are safe to be published at any time,
>>> no
=
>
> I took the USB stick and transferred the response file to my laptop, and then
> uploaded it using the laptop to S3 via Sean Bowe's transcript site.
>
> I did not destroy the compute node but I'm unlikely to use it or plug it in
> for
> some time.
> --
> Ja
Kobi Gurkan (from QED-it) wishes to go after cody. I'll double-check later.
On Sat, Nov 11, 2017 at 4:12 AM, cody burns wrote:
> I will go after the unnamed party.
>
>
> On Sat, Nov 11, 2017 at 3:21 AM Sean Bowe via zapps-wg
> wrote:
>>
>> All is verified and mir
> the
>> monitor at this point. After 60 minutes had passed, I looked inside the lid
>> and saw that the computation had completed, so I wrote down the BLAKE2b hash,
>> and unmounted and removed the USB stick, and then powered the node down.
>>
>> Postprocessing
&
27;d like to be added to the queue. Happy to go after Cody unless there are
> others already lined up.
>
>
> ---
> Matt Drollette
>
> On Sat, Nov 11, 2017 at 4:31 PM, Sean Bowe via zapps-wg
> wrote:
>>
>> Thanks Jared! Awesome! I've verified the contr
Cody unless there are
>> others already lined up.
>>
>>
>> ---
>> Matt Drollette
>>
>> On Sat, Nov 11, 2017 at 4:31 PM, Sean Bowe via zapps-wg
>> wrote:
>>>
>>> Thanks Jared! Awesome! I've verified the contribution and put your
>&g
Also,
>> Kobi doesn't have time right now, so it's Matt's turn!
>>
>> Sean
>>
>> On Sun, Nov 12, 2017 at 12:40 PM, Sean Bowe wrote:
>> > Cody is going but I haven't heard back in a while. In let's say about
>> > five hours i
There are three ways that a participants' toxic waste can be compromised:
1. the participant is dishonest and keeps the toxic waste around
2. the toxic waste is extracted from the machine, either from a side
channel attack or because the toxic waste still "exists" in the
machine somewhere
3. the p
;s challenge should be made public.
That's very interesting. Right now the transcript is public and so the
current challenge can be computed by anyone, but it would be a little
better if I put the "current" challenge file up for download.
Sean
On Mon, Nov 13, 2017 at 6:22 PM,
m7UfalFVutAm2jKoerCm2YdKpVaSkpnpPu4ZKBr0UzNNHkGpR73deoKr
> F2Dh31+M721DTFY1nHszUFhohcS0dCmW5i2gx32oN6UZpdewHv9jmpAioYIX
> Da+Ybl8E3pWYAIOTcBOGThknKdrSqmXMsUJK+i2ZyyDS8COgmZ0XuCq7kNWI
> RsU4WZRnitHn6mnDU92w+7kh5Ayl+pSgns1mFe9Kp2LqmAePf5+cvJtL8nlR
> LHES
> =r6L2
> -END PGP
There were some people who wanted to participate in Powers of Tau but
won't be available until at least Friday.
So we're looking for volunteers to fill in until Thursday!
Sean
Okay, Hudson Jameson would like to go next. Then, someone else is
prepared to go but I'm not sure they want me to say their name
publicly yet.
On Saturday, Robert Hackett from Fortune requested to be able to participate.
Go ahead and post if you'd like to go and when you'd be available.
Sean
On
The person who "I wasn't sure if they wanted me to say their name" is
Eric L. Stromberg.
Sean
On Wed, Nov 15, 2017 at 6:33 PM, Sean Bowe wrote:
> Okay, Hudson Jameson would like to go next. Then, someone else is
> prepared to go but I'm not sure they want me to say their name
> publicly yet.
>
>
evening Hong
> Kong time (~ 30 h from now) if there is a slot.
>
>
> On Thu, Nov 16, 2017, 9:43 AM Sean Bowe via zapps-wg
> wrote:
>>
>> The person who "I wasn't sure if they wanted me to say their name" is
>> Eric L. Stromberg.
>>
>> Sea
Thanks!
> Eric
>
>> On Nov 16, 2017, at 5:04 AM, Sean Bowe via zapps-wg
>> wrote:
>>
>> Currently:
>>
>> Hudson is going.
>> Eric requested to go afterwards, but if they're quick (or not
>> available) I should be able to fit Cody in.
&g
I think it is the current version (1.21). I imagine it would be
possible to modify the code (and many of the dependencies) so that it
could compile on a really old version too.
Sean
On Thu, Nov 16, 2017 at 1:35 PM, Devrandom via zapps-wg
wrote:
> Hi Sean,
>
> Do you know what is the oldest versi
> Oh, I might have misunderstood the paper then: when it says "Random beacon" it
> really does mean an external random beacon such as the NIST Randomness Beacon,
> not something generated within the ceremony itself?
Indeed. The ceremony itself cannot be a source of randomness or it
would be vulner
Thanks Hudson! :)
Eric finished but hasn't posted their attestation yet. Now it's Cody's turn.
Sean
On Thu, Nov 16, 2017 at 8:21 PM, Hudson Jameson via zapps-wg
wrote:
> I have finished the report and made a PR in the attestations repo:
> https://github.com/ZcashFoundation/powersoftau-attestati
e to level zero, and
> then
> uploaded it using the laptop to the aws s3 site from my phone using tor over
> airport wifi and posted the image hash on twitter as well as the mailing
> list
>
> image: ipfs/QmZkVPctuTTDbNfT5fM3aYbDPwBB9hMFjBDSRhNswNx9j3
> - - --
> Cody Burns, CodyWBurns.com
> …
>
>
Great! It's definitely possible to fit you in next week. :)
Sean
On Fri, Nov 17, 2017 at 7:29 AM, Gabor Losonci via zapps-wg
wrote:
> Hello,
>
> I would like to participate on the next week, some day after UTC 9pm. Many
> thanks Gabor
>
Sure! Should be plenty of time next week to participate.
Sean
On Fri, Nov 17, 2017 at 11:34 AM, Adam Nagel via zapps-wg
wrote:
> Hello,
>
> I'd like to volunteer for the ceremony, and am available next week.
>
> Regards,
> Adam Nagel
Cool! I'll get you in this coming week.
Sean
On Sat, Nov 18, 2017 at 7:22 PM, Tommaso Pellizzari via zapps-wg
wrote:
>
Thank you! It's always good to have witnesses of the process.
Here's the full roster of participants this week. More volunteers are
welcome, just send a request to the mailing list!
Michael Dixon (Sunday) -- disclosure: a personal friend of mine! :)
Adrian (Sunday)
[CAN'T SAY]
Gabor
Alyssa (Tuesd
Miguel Angel Marco Buzunariz wished to go today (Sunday) but I didn't
notice their email. I think we could have room in the queue today
though, depending on how long Michael/Adrian take.
Sean
On Sat, Nov 18, 2017 at 8:59 PM, Sean Bowe wrote:
> Thank you! It's always good to have witnesses of the
Thanks! Adrian just went too but hasn't posted an attestation yet.
Right now it's Marco's turn since he got lost in the schedule over the
weekend. Then, tomorrow it's Alyssa from Coindesk's turn. :)
Sean
On Sun, Nov 19, 2017 at 3:31 PM, Michael Dixon via zapps-wg
wrote:
> -BEGIN PGP SIGNED
Looking good! I've added this response file to the transcript and will
update the attestation repo soon.
I am letting someone see if they can contribute tonight before Alyssa
tomorrow, but if they can't we'll just move on to Alyssa.
Sean
On Mon, Nov 20, 2017 at 4:05 PM, Miguel Angel Marco Buzuna
Yes! :) What times of day / days of week work best for you? There's a
bit of a queue that we're moving through.
Sean
On Mon, Nov 20, 2017 at 6:31 PM, Rudi Cilibrasi via zapps-wg
wrote:
> Hi,
>
> I was a contributor to the Tromp equihash solver. I want to find out if I
> might be allowed to parti
Thanks! I'm verifying your contribution.
Note that the `powersoftau` code, unmodified, does not act
determinisically with the random input provided by the user, so:
> - - Revealing the randomness in the unused response, after the compute node
> had
> been shut down, should make it possible to
The contribution I got from Jack is corrupted; not the same hash as in
Jack's attestation, and one of the points inside of it does not lie on
the curve. I suspect data corruption, especially since Jack's internet
connection was unreliable.
I have another person scheduled about 7 hours from now, so
By the way, the BLAKE2b hash of the corrupted response file is
7d90a636ba0448245cadb7fde245e2f9b0556948b54f8eab51f32f1d7dbefcfdfcfe1eb9a392dac9f0b4a189295af43d9284b1b674a5908edc250cdfda5b7e63.
Sean
On Thu, Nov 23, 2017 at 12:29 AM, Sean Bowe wrote:
> The contribution I got from Jack is corrupted
Thanks! Excellent job.
> In an effort to overwrite the RAM and run out the battery, I started two
> instances of `cargo test`.
Clever. :)
Sean
On Thu, Nov 23, 2017 at 4:54 PM, Adam Nagel via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> Powers of Tau Participation Wr
Wonderful! Thank you so much!
Sean
On Thu, Nov 23, 2017 at 7:10 PM, Gabor Losonci via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> Linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27
> UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
>
> bba314624956961a2
I think 27th will work great. I prefer it when people have extra time
(rather than just "an evening") so that they don't feel rushed. This
also tends to take way longer than an evening on average, I've found.
Sean
On Fri, Nov 24, 2017 at 6:05 PM, Zaki Manian via zapps-wg
wrote:
> Hey Sean,
>
> M
You're next! :)
Sean
On Sat, Nov 25, 2017 at 1:50 PM, Neal Conner via zapps-wg
wrote:
> Hello,
>
> Please consider this my request to join the MPC ceremony.
>
> I've made the necessary preparations and can compute within 24 hours of
> receiving the challenge file, including today if a slot is av
Cool. Now you're next!
Sean
On Sat, Nov 25, 2017 at 8:54 PM, Adam Langley via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> I'll be around all of tomorrow (Sunday) during normal PST hours. I can
> likely participate similarly during the week, albeit with slightly more
>
Thank you so much! I've added your attestation.
Sean
On Sun, Nov 26, 2017 at 9:43 AM, Adam Langley via zapps-wg
wrote:
> Signed report attached. Contents reproduced below. Thanks for
> organising this and scheduling me!
>
>
>
> Date: 2017-11-26
> Name: Adam Langley
> Location: Los Angeles, USA
>
Sounds good! I'll ping you when it's your turn.
Sean
On Thu, Nov 30, 2017 at 5:16 PM, Justin Drake via zapps-wg
wrote:
> Hi there,
>
> I'd like to participate in the ceremony :)
>
> I'm based in the UK, and Dec 4, 5 or 6 would work well for me.
>
> Best,
> Justin
>
Thanks Justin! I've added this to the transcript. :)
Sean
On Mon, Dec 4, 2017 at 2:19 PM, Justin Drake via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Powers of Tau Operational Writeup
> =
>
> Round: 23
> Date: 2017-12-04
> Name: Justin
Excellent work! :)
new, compute, verify_transform is a good demonstration. I would
verify_transform with a binary compiled with the normal Rust compiler
to double-check.
Sean
On Tue, Dec 5, 2017 at 11:59 AM, Devrandom wrote:
> Hi all,
>
> I was able to build rustc completely from sources. This
That would be nice!
What other obstacles are there for fully deterministic builds? It
seems like it would be a good idea to toss a few features in (like
that one) and make some kind of "release" binaries for people to use
which have been scrutinized and built in this reproducible way.
I hopefully
Sounds good! I'll send you some instructions this weekend.
Sean
On Thu, Dec 7, 2017 at 4:21 PM, Mine Zcash via zapps-wg
wrote:
> I will be ready to start this Saturday or Sunday if nobody is in line.
Absolutely! By "next Friday, Saturday or Sunday" do you mean over the
next 3 or 4 days or next week?
Sean
On Wed, Dec 13, 2017 at 12:15 PM, Fabrice MARCHAL via zapps-wg
wrote:
> Hello,
>
> I would like to participate in MPC.
>
> My compute node is ready and i fully tested the computing process.
Thanks! This has been entered into the transcript.
Feel free to submit a PR to:
https://github.com/ZcashFoundation/powersoftau-attestations
to add any additional context for your attestation.
Sean
On Fri, Dec 15, 2017 at 10:11 AM, Fabrice MARCHAL wrote:
>
> Powers of Tau Operational Writeup
>
Sounds great! I'll ping you Monday.
Sean
On Fri, Dec 15, 2017 at 6:50 PM, Gareth Davies via zapps-wg
wrote:
> Hi,
>
> I would like to join the MPC ceremony. I am available to participate on any
> day during the next week depending on when it would be required.
>
> Cheers,
>
> Gareth
Thanks! I've updated your attestation.
Sean
On Sun, Dec 17, 2017 at 4:47 AM, Fabrice MARCHAL wrote:
>
> Hi Sean,
> I just noticed that my built-in webmail signing option didn't signed my
> email as expected. In order to do the right thing I prefer to send again my
> report, this time as a real P
Thanks! Accepted your contribution. :)
On Mon, Dec 18, 2017 at 2:33 PM, Gareth Davies via zapps-wg
wrote:
> Assuming everything went well I’ve also opened a PR on the
> powersoftau-attestations repo to add my contribution.
>
> Cheers,
>
> Gareth
>
>
> On December 18, 2017 at 11:58:35 AM, Gareth D
Thanks! I've updated the transcript repo now.
Sean
On Wed, Dec 20, 2017 at 7:35 AM, kylr via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Powers of Tau Operational Writeup
> =
>
> Round: 27
> Date: 2017-12-18
> Name: kylr
>
> sha256sum c
Of course not! Boris would you like to go next? And then Tony?
Sean
2017-12-23 18:55 GMT-07:00 Tony Arcieri via zapps-wg
:
> Ditto
>
> --
> Tony Arcieri
Excellent! I've updated the transcript with this contribution.
Sean
On Mon, Dec 25, 2017 at 4:37 PM, SuperKerem via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Powers of Tau Operational Writeup, Round 28
> ===
>
> SuperKerem
> 2
I couldn't get a hold of Boris so I'm moving on to Tony.
Sean
On Sun, Dec 24, 2017 at 7:26 PM, Sean Bowe wrote:
> Of course not! Boris would you like to go next? And then Tony?
>
> Sean
>
> 2017-12-23 18:55 GMT-07:00 Tony Arcieri via zapps-wg
> :
>> Ditto
>>
>> --
>> Tony Arcieri
We don't have a schedule for that yet, but I would suspect in 2 or 3 months.
Sean
On Tue, Jan 2, 2018 at 12:07 PM, Adrian Brink via zapps-wg
wrote:
> Hi,
>
> Zaki told me about the second phase of the ceremony. When is that one
> starting?
>
> On 2 Jan 2018 19:57,
Great! I've verified it and I'm entering it in the transcript now.
It is totally okay if you don't want to use GPG, and this is acceptable.
Thanks!
Sean
On Tue, Jan 2, 2018 at 1:12 PM, Tony Arcieri via zapps-wg
wrote:
> I have finished running Powers of Tau. Here is the output:
>
> The BLAKE2b
> I'd like to participate in the setup ceremony.
Great! I'll be in touch.
> {(a) : A = a * G, B = H(a)}
Are you constrained by the choice of H and/or the curve?
Sean
On Wed, Jan 3, 2018 at 12:47 PM, James Prestwich via zapps-wg
wrote:
> I'd like to participate in the setup ceremony.
>
> I als
If any curve is acceptable, I would encourage Jubjub, which we'll be
using for the next version of Zcash. In which case you will be able to
leverage our Sapling crypto code once it is more mature over the next
month or so. https://github.com/zcash-hackworks/sapling-crypto
Sean
On Wed, Jan 3, 2018
I believe those gadgets are specifically for curves where the scalar
field is the base field of the curve you're working with, so they
probably wouldn't be that useful for arbitrary fields. Most of the
complexity here is the bignum arithmetic inside the circuit, though.
> Is there any more clever
Thanks! I've added this contribution to the transcript as round 30.
Sean
On Thu, Jan 4, 2018 at 11:39 AM, Junajpu via zapps-wg
wrote:
> Attestation:
>
> Downloaded the version of https://github.com/ebfull/powersoftau based on the
> last commit:
> d47a1d3 on 16 Nov 2017
>
> Followed the README.md
Cool! Would you like to go on Saturday?
Sean
On Wed, Jan 3, 2018 at 8:24 PM, Brian via zapps-wg
wrote:
> Hi!
>
> I would love to participate in this new MPC ceremony. I can do it any
> day, just let me know a couple of days before. My time zone is UTC-8.
>
> Thanks,
> pera
>
Okay, you shall go next. :)
Sean
On Thu, Jan 4, 2018 at 1:43 AM, Lazlo via zapps-wg
wrote:
> Hi!
>
> I would like to participate in the Powers of Tau ceremony.
>
> Best regards,
> Lazlo
Thanks! I've added this to the transcript.
Sean
On Sat, Jan 6, 2018 at 8:02 PM, Brian via zapps-wg
wrote:
> Powers of Tau Operational Writeup
> =
> Date: 2018-01-06
> Name: Brian Gomes Bascoy
> Location: Seattle, WA, USA
>
> Challenge:
> bdfadf02e016d8fac9a77659ce
Roger! I think you'll need to go Monday though.
Sean
On Fri, Jan 5, 2018 at 5:34 PM, Andrew Miller via zapps-wg
wrote:
> Bump for Nick to go soon!
>
> On Jan 4, 2018 8:29 PM, "Nick Sullivan via zapps-wg"
> wrote:
>>
>> I'd like to participate when there's a free slot.
>>
>> Nick
Hi,
I've been quite busy with holidays, work and being sick. :( I'd like
to get around to writing some instructions for the ceremony that
encourage people to consider using your work, so reviewing it is one
of my priorities. I'll find a time to do that soon.
Sean
On Mon, Jan 8, 2018 at 11:27 AM,
One quick comment from glancing: use --frozen in your invocation of
cargo to prohibit network access and sort of "test" that the
dependencies were vendored correctly. I was pretty satisfied when
looking at trust-rust before. Obviously the non-determinism sucks, but
given how much the rust compiler
I added this to the transcript, thank you! :)
Sean
On Mon, Jan 8, 2018 at 11:09 AM, James Prestwich via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> I've finshed running the powers of tau contriubtion, and uploaded the
> response.
>
> $ sha256sum challenge
> 85a1f6af39
Sure! I'll be in touch.
Sean
On Sat, Jan 13, 2018 at 9:14 AM, Bastien Teinturier via zapps-wg
wrote:
> Hey guys,
>
> I'm interested in participating to the Powers of Tau ceremony.
> Is there a free slot anytime soon?
>
> Cheers,
> Bastien
Great! I'll be in touch.
Sean
On Sun, Jan 14, 2018 at 6:07 PM, Mark Giannullo via zapps-wg
wrote:
> Hello,
>
> I would like to participate in the ceremony, when there is an opportunity. I
> will have my setup prepared by tomorrow afternoon (EST) at the latest.
>
> Thanks in advance,
> Mark Giann
Great! I'll be in touch.
On Tue, Jan 16, 2018 at 12:25 AM, Jacob Lyles via zapps-wg
wrote:
> Hi everyone!
>
> I'd like to participate in the ZCash Powers of Tau ceremony. As far as
> crypto cred goes, I was an author of the glacier protocol
> (https://glacierprotocol.org/), a bitcoin enthusiast s
Sounds good, I'll be in touch this weekend.
Sean
On Sun, Jan 14, 2018 at 3:58 PM, autotunafish--- via zapps-wg
wrote:
> Hello, my name is John Bruhling. I was hoping to participate, the best times
> for me would be Saturday and Sunday evening. Thank you, let me know if you
> need any more inform
Cool, we'll get you in likely early next month then.
Sean
On Wed, Jan 17, 2018 at 6:22 PM, Jan Jancar via zapps-wg
wrote:
> Hi all,
> I would like to participate in the Powers of Tau ceremony. I have a
> compute node ready, am in the UTC +2 timezone, and generally available
> until the 22.01.201
Thank you! Another fun attestation. :)
Sean
On Wed, Jan 17, 2018 at 7:47 PM, Ryan Close via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> Powers of Tau Attestation
> =
>
> Round: 38
> Date: 2018-1-17
> Name: Ryan Close
> Location: Florida, US
>
>
It does interfere with someone, but we could make it work Saturday
morning if you don't expect it to take longer than the morning.
Sean
On Wed, Jan 17, 2018 at 9:18 PM, Andrew Miller via zapps-wg
wrote:
> Greetings everyone,
>I have a good one planned. But it's got a difficult time constrain
This is great! I've entered it into the transcript. Thanks!
Sean
On Thu, Jan 18, 2018 at 6:46 AM, Bastien Teinturier via zapps-wg <
zapps...@lists.z.cash.foundation> wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Powers of Tau Attestation
>
>
> Da
Sounds good! I'll be in touch.
Sean
On Thu, Jan 18, 2018 at 12:47 AM, Gabe Ortiz via zapps-wg
wrote:
> Hi, I’d like to participate. I can go anytime next week between 9am and 5pm
> MST.
>
> -Gabe
Verified and added to transcript. Looking forward to additional info!
Sean
On Sat, Jan 20, 2018 at 11:08 AM, Miller, Andrew wrote:
> Here's our response, should be done uploading to s3 in a moment.
> 9af2153b5d0f96689f79049337de1fb328873f5f771adef1adf0486e4904b28d96fe602c8866f42e8047ce3bdafe2f9e
There are potentially few useful entropy sources on an isolated system with
its peripherals removed that has just booted (for example), so a cat
walking across the keyboard can be used to strengthen the randomness at
little cost. It's mostly defense-in-depth.
Sean
On Mon, Jan 22, 2018 at 1:59 AM,
Hi,
I have people scheduled for both of those dates. If there are other
dates that you'll be available let me know.
Sean
On Mon, Jan 22, 2018 at 9:02 AM, Team Zcash FR via zapps-wg
wrote:
> Hi,
> We would like to participate to MPC as Zcash FR team (https://zcashfr.io)
> We are 3 and or process
This is excellent! I'm so impressed. I've added this to the transcript.
Thanks,
Sean
On Wed, Jan 24, 2018 at 5:54 PM, Filippo Valsorda via zapps-wg
wrote:
> The BLAKE2b hash of `./response` is:
> 7b55c0f5 68a8b4df 2ca14085 2e816df2
> b9a2dafe 50b2c5e2 5e6c9b6a df239de0
>
Great work on this. I wonder if this implementation will be a better
foundation for fully-deterministic and trustworthy builds? I am
disappointed that devrandom's efforts were stymied by non-determinism
in the Rust compiler. :(
Sean
On Sat, Jan 27, 2018 at 12:30 PM, Filippo Valsorda via zapps-wg
; About the mrustc work that I've done - I don't think the lack of determinism
> is a showstopper. It just means that contributors have to compile from
> source, which is time consuming. Perhaps there was some miscommunication
> about that?
>
>
> On Sun, Jan 28, 2018
Awesome job, thank you so much. :)
By the way, the challenge file that Gabe used is located here:
https://powersoftau-transcript.s3-us-west-2.amazonaws.com/challenge.48
I'd be curious to see why Filippo's Go code can't deserialize it.
Maybe a platform specific bug?
Sean
On Thu, Feb 1, 2018 at 3
Thanks Gustavo! I've entered this into the transcript.
Sean
On Mon, Feb 5, 2018 at 7:12 PM, Gustavo Frederico via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Powers of Tau Attestation by Gսѕtavо Frеdегіc೦
> - --
>
> Date: 5/
Excellent! Verified it. Adding to transcript now.
Sean
On Thu, Feb 8, 2018 at 12:40 PM, Mark Giannullo via zapps-wg
wrote:
> I completed the challenge using Filippo's golang implementation:
> https://github.com/FiloSottile/powersoftau
>
> The BLAKE2b hash of `./response` is:
> a6a754d8 68697ff0
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hello! We have a new coordinator for the Powers of Tau.
Jason Davies is a member of the Zcash community and has been mirroring and
verifying response files as the ceremony has been ongoing. I'm happy to
announce that I'm passing the coordinator role
I love this! Very detailed and I was happy that someone managed to
leverage the next-challenge stuff locally during the ceremony.
Thank you!
Sean
On Fri, Feb 9, 2018 at 6:30 PM, Jan Jancar via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> Powers of Tau attestation
> ==
The Powers of Tau security proof (see
https://eprint.iacr.org/2017/1050) holds in the "random beacon model,"
meaning that we must apply a random beacon at the end of the ceremony.
It's not good enough to use (say) a hash of the transcript, because of
adaptive attacks (the last participant could pre
Awesome! I was excited for yours since you seemed like you were very paranoid.
Sean
On Thu, Feb 15, 2018 at 7:58 PM, disturbedsquirrel--- via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
> ###
>
> Powers of Tau attestat
too evident if the
> maximum reported temperature differs more than a few degrees to the one that
> people actually experienced in that place).
>
>
> El viernes, 16 de febrero de 2018 0:37:05 (CET) Sean Bowe via zapps-wg
> escribió:
>> The Powers of Tau security proof (see
>
I participated in the Powers of Tau ceremony, and here's my response file
hash (BLAKE2b):
db1eb34d 1f153f0e 32b287d7 4e7a81a2
49257944 5f9df1c4 7daf3fcd a7f3200a
2ab664b3 3c2b7dbc 1f46758f 4b1eb840
ff6afdaf 6e488849 88e4a0fa 504f5ad8
I used an auditable process to ensure (with high probability) t
We're almost finished with the Powers of Tau ceremony!
On March 15 no new contributions will be accepted. If you still want to
participate, you will need to contact Jason Davies ASAP and arrange for a
time.
I'll be making an announcement about the random beacon soon.
Thanks,
Sean
the BLS12-381 curve. If there is any interest in conducting Powers of
>> Tau for larger circuit sizes, or for different curves (such as the alt_bn128
>> supported in Ethereum), then the Foundation would support that too. Although
>> someone would have to adapt Sean's or FiloSotti
As far as security goes, we've successfully guarded against all but
the most elaborate and unrealistic attack scenarios. The remaining
threats require some combinatorial explosion of individually
sophisticated attacks or breakthroughs, like stealthy backdoors in the
Rust compiler and still for many
This is _very_ cool, thanks for sharing it with us! It looks like the
best DSL for R1CS that I've ever seen.
I encourage you to also share this with the Bitcoin community
(bitcoin-dev mailing list.) Bulletproofs support R1CS as well.
Have you written a SHA256 gadget with this library?
Sean
On M
Attached is the (signed) announcement of the random beacon.
Also, it's been timestamped using OpenTimestamps.
Sean
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi all,
I covered the random beacon in a previous post on the mailing list:
https://lists.z.cash.foundation/pipermail/zapps-wg/2018/
M -0600, Sean Bowe via zapps-wg wrote:
>> Attached is the (signed) announcement of the random beacon.
>>
>> Also, it's been timestamped using OpenTimestamps.
>
> It's important to note that the OTS proof added little, if any, security to
> this random beacon, for t
Thanks! I confirmed that you are John Dobbertin from the original ceremony.
Sean
On Sun, Mar 25, 2018 at 7:19 PM, John Dobbertin via zapps-wg
wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA512
>
>
> Based on my participation in the original ceremony, I was invited to return
> for this r
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
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:
d8a87
Zcash's Sapling upgrade is coming, and we're doing an MPC for its
zk-SNARK parameters. This MPC uses the Powers of Tau parameters to
construct parameters for three different circuits: a Sprout circuit,
and two Sapling circuits (one for inputs, one for outputs).
The code for participating (and veri
5/03/2018 09:43 PM, Sean Bowe via zapps-wg wrote:
>> Zcash's Sapling upgrade is coming, and we're doing an MPC for its
>> zk-SNARK parameters. This MPC uses the Powers of Tau parameters to
>> construct parameters for three different circuits: a Sprout circuit,
>>
Please see the attached random beacon announcement.
Sean
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi all!
I'm happy to announce that the Zcash "Sapling" MPC is nearly finished! I'd like
to
thank the roughly 94 participants that contributed their time and effort to
making
Zcash safer. I'
1 - 100 of 101 matches
Mail list logo
