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See attestation_0051.md in this directory for Joseph Bebel's signed attestation.

Hash of the challenge file for verification:

    e6571d37 a66e7fbd ebd3ba93 6bd8c23c
    140bb178 fb329657 2bed8709 063e3610
    e99a5198 3f793bc2 b84d76ed f286d6e7
    80cc879b ab7e1c6a 61bf8a9f 8fd160d7

response was based on the hash:

    e6571d37 a66e7fbd ebd3ba93 6bd8c23c
    140bb178 fb329657 2bed8709 063e3610
    e99a5198 3f793bc2 b84d76ed f286d6e7
    80cc879b ab7e1c6a 61bf8a9f 8fd160d7

Hash of the response file for verification:

    6b157096 fa63b56d f6e1607a c58296eb
    62d1d6bb fd58aa5a 6247e217 4c47d18b
    d2a313cd c9b0b786 5c6b7f0d 61e364e3
    0066ce2e 89bbaf3d ec5a8388 1bbb2aed

Blake2b hash of the new_challenge file for participant #52:

    01e99205 db3311bf 535b3316 e265050a
    062a4491 f43c0e14 60bfe0ce acf196d6
    b78559b8 015a3463 40aea8d5 03f2d9b9
    a6e1b3f0 a54d2d22 d4ed1d92 16c09402

The above new_challenge file: https://ppot.blob.core.windows.net/public/challenge_0052

Joseph Bebel's attestation:

Attestation to response 0051

Date: 26 July - 7 August 2020

Name: Joseph Bebel

Location: California, USA

Device(s): i7-4770S desktop

Challenge:

  • Blake2b: e6571d37a66e7fbdebd3ba936bd8c23c140bb178fb3296572bed8709063e3610e99a51983f793bc2b84d76edf286d6e780cc879bab7e1c6a61bf8a9f8fd160d7

challenge file contains decompressed points and has a hash: e6571d37 a66e7fbd ebd3ba93 6bd8c23c 140bb178 fb329657 2bed8709 063e3610 e99a5198 3f793bc2 b84d76ed f286d6e7 80cc879b ab7e1c6a 61bf8a9f 8fd160d7 challenge file claims (!!! Must not be blindly trusted) that it was based on the original contribution with a hash: 11611a89 05056363 781d2039 487f00fe ad74a86f d2bb6f7d a67ba3a0 c4ba71ca 7a943185 ec26beb7 391984f5 f60c61f4 54a4ca17 a9db1631 7e597971 8129460f

Software used: https://github.com/kobigurk/phase2-bn254/commit/bf852c168676a7afc5dd17b47ff9b8f394aeab8a

rustc 1.47.0-nightly (f9d422ea7 2020-08-04) sha256=49c96f3f74be82f4752b8bffcf81961dea5e6e94ce1ccba94435f12e871c3bdb

Ubuntu 20.04 LTS

Response:

  • Blake2b: 6b157096fa63b56df6e1607ac58296eb62d1d6bbfd58aa5a6247e2174c47d18bd2a313cdc9b0b7865c6b7f0d61e364e30066ce2e89bbaf3dec5a83881bbb2aed

The BLAKE2b hash of ./response is: 6b157096 fa63b56d f6e1607a c58296eb 62d1d6bb fd58aa5a 6247e217 4c47d18b d2a313cd c9b0b786 5c6b7f0d 61e364e3 0066ce2e 89bbaf3d ec5a8388 1bbb2aed

License:

All portions of this response, including this attestation, are licensed under the GNU General Public License version 3 available at https://www.gnu.org/licenses/gpl-3.0.en.html