Great! Thanks! I've verified this and entered it into the transcript.

Sean

On Fri, Nov 17, 2017 at 5:35 AM, cody burns <cody.w.bu...@gmail.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Powers of Tau Operational Writeup
> =================================
>
> Date: 2017-11-17
> Name: Cody Burns
> Location: MTR train >> Hong Kong China
>
> Challenge:
> 4f86db7dd1edf502d28d3febe59018e865c9227e2ab33eeee0fb33c91d761c11891bc076bbf80b7fbea911f354eec509b5dadd8ba678c6b53dbc6e5479d3117a
> Response:
> 3002034f75e83f530d9a949071e6fb28a9f1e39c563bced27d91bf5cc45f0c16e866ffb30c912cf7648bde08f0709f1846d758ecfcec62dcdc2eb16c685e60d1
>
> Preparation Steps
> =================
>
> Git repository: https://github.com/ebfull/powersoftau
> Commit hash: 9e1553c437183540392a7231d0788318a19b18a3
> Compiler: rustc 1.21.0 (3b72af97e 2017-11-09)
>   cargo 0.22.0 (3423351a5 2017-10-06)
> Build: cargo build --release --features=u128-support
>
> vm: VirtualBox-5.1.28-117968-Win;  b2sum:
> f59139212d894bee17ecce234ad57bae188348856b5d85ca4cea46247d9b87e453c807e002b3277cf348df61502a6caaf549a154af0a8b8648b87ddf2d627326
> Level 1: ubuntu-16.04.3-desktop-amd64.iso; b2sum:
> fa6650810ad70a6a13b5baf33180499f115c2fd160e655b329fa1f708e1f0803432b5a70446e64522107eff67097222e77bd592420c536ed634b2677c5b9befc
>
> sha256sum:
> b2sum-amd64-windows.exe:914abb5152d7f179ca377c843494fe718a87023320edcbbfe8dba6010f57e94a
> b2sum-amd64-linux:
> 529c90f8cd003b3485defef239a5ae7f62470342c3a65493abfba9e190413451
>
> - - From random street market vendors in Hong Kong
> 4x4 puzzle cube -- unhashable
>
> 2 usb drives
> (so much virus scanning and formating)
> Spongebob usb formatted and installed Ubuntu
> I reformatted a pikichu USB stick to ext4, then copied the
> `challenge` file and the `target/release/compute` binary.
>
> Side channel Defenses
> ====================
>
> Entropy source: using "4x4 cube" toy,
> - key/value wordlist created on flight Houston >> San Francisco. Hand
> written on "air sick" bag
> - eBook reader last updated: 7/7/2017
> - 1 book from 168 chosen based on first 2 numbers of b2sum sha256,
> "Nueromancer" (fitting)
> - Key: 6 page numbers chosen at random
> - Value: 6 unique words chosen per page
> - Mapping: Center color square == key; reading left to right, top to bottom,
> color == value for word
> - Process:
> - on "compute trip"
> - random turns to scramble set
> - solve 6 center squares
> - "roll cube like dice"
> - enter word set
> - repeat 3 times: 36 total words (key square omitted from set)
>
> Physical/electronic monitoring:
> All steps preformed on an airgapped laptop in "blackout bag" on a moving
> train under the city of Hong Kong so
> no casual monitoring could be employed,
> any physical altercations would be highly unlikely,
> and I would be traveling hundreds of km per hour in a faraday cage over
> under rock and chaos
>
> Procedure
> =========
>
> Prep: on the first leg of multi-leg flight created wordlist
>
> Dwell time: Stay in coffin hotel in questionable part of town with only
> paper checkin and no english, purchase supplie;received new Challenge from
> Sean
>
> Compute:
> Level 0 -
> Computer in airplane mode wifi chip disabled
>         I started windows and the vm with ubuntu 16 desktop(level 1) with no
> network bridging.
>
> Level 1:
> I compiled the compute binary, and transfered to spongebob
> Level 2:  loaded linux Pikichu usb  -"Try Ubuntu" (Live CD mode).
>   I imported the previous challenge/response codes and verified them.
>   Enter the train.
>   I then began the entropy creation "ceremony" and entered the values.
>   Wrote down BLAKE2b hash, unmounted drives
>
>
> Postprocessing
> ==============
>
> Destroyed level 2 and level 1 vm image
>
> I took the USB stick and transferred the response file 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
> …
>
> Ethereum Classic Development community
> Blockchain Architect
> codywburns.com
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> TEEW9xAtx4mtqrvQ/LtW3tPaGPYN5nXHHqvbqw9tYJgL/fN/IZte6W+fP/sI00Tr
> 9Xr7bM/p+8yfohbLahXlozowNvSrLkRZeOUhkUmxxa345UCkfkCQhGGnhsN5SaDc
> Ljnx7uU6/s0LiQck+KU=
> =/z6t
> -----END PGP SIGNATURE-----
>
>
> On Thu, Nov 16, 2017 at 9:55 PM Sean Bowe via zapps-wg
> <zapps...@lists.z.cash.foundation> wrote:
>>
>> 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
>> <zapps...@lists.z.cash.foundation> wrote:
>> > I have finished the report and made a PR in the attestations repo:
>> > https://github.com/ZcashFoundation/powersoftau-attestations/pull/5
>> >
>> > I also made a fun Imgur album of the adventure:
>> > https://imgur.com/a/2rUDz
>> >
>> > Please note that there are 2 names for round 6, Hudson Jameson and
>> > Steven Schroeder.
>> >
>> > Hudson Jameson
>> >

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