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See david_attestation.md in this directory for David Schwartz's signed attestation.

Hash of the challenge file for verification:

	e2af5e0c 70d279be 02ecf969 5e1d71e1
	d5e56887 43652ad4 9ac3031f 4f8be1a7
	5a5860ea 878a4350 409300f3 fb5145c0
	c10601f5 28777802 b2e10da9 80e2b5f9

response was based on the hash:

	e2af5e0c 70d279be 02ecf969 5e1d71e1
	d5e56887 43652ad4 9ac3031f 4f8be1a7
	5a5860ea 878a4350 409300f3 fb5145c0
	c10601f5 28777802 b2e10da9 80e2b5f9

Hash of the response file for verification:

	b45b4da5 596df7c8 249377e5 02a34312
	04c91551 f0f97c29 51add28a 65a7737f
	6486222f ac2dbfa7 68333718 ac300a66
	f6a114df 14af3769 e2487323 1bb17440

Blake2b hash of the new_challenge file for participant #64:

	77b44d1b 8de961bd de398de3 01f9dd85
	40d9cf7f 254521f6 c4abb6b6 33bc0bf0
	ef37df69 4e2ee9da ac383ac4 0593ec05
	334613d6 26a69aaf c053adfb 1bfe4ec6

The above new_challenge file: https://ppot.blob.core.windows.net/public/challenge_0064

David Schwartz's attestation:


Attestation to response 0063

Date: Wed Nov 04 2020 - Thu Nov 05 2020 Name: David Schwartz Location: Zug, Switzerland Device: OVH Dedicated server AMD EPYC 7371 16-Core Processor 2.3GHz with Ubuntu 18.04 SnarkJS 0.3.44 Commit Hash: 5b769aecf705a266319d6f74156d46b6454b5563 Challenge: URL: https://ppotch.blob.core.windows.net/public/challenge_0063

`challenge` file contains decompressed points and has a hash:
        e2af5e0c 70d279be 02ecf969 5e1d71e1
        d5e56887 43652ad4 9ac3031f 4f8be1a7
        5a5860ea 878a4350 409300f3 fb5145c0
        c10601f5 28777802 b2e10da9 80e2b5f9

`challenge` file claims:
        9c291210 01aa7628 04a1509f 5e36c04b
        88cf0f68 e0cbdc67 5f0df199 aa50fa46
        a2a66a80 e291fdf3 08d4a517 b522e623
        14bbe7f3 181b9713 a8e0391d f2a369ad      

Response:

The BLAKE2b hash of `./response` is:
        b45b4da5 596df7c8 249377e5 02a34312
        04c91551 f0f97c29 51add28a 65a7737f
        6486222f ac2dbfa7 68333718 ac300a66
        f6a114df 14af3769 e2487323 1bb17440

Time taken Challenge Download time: 1h 34 min Execution time: 12h 25 min Upload time: 55 min

Entropy Sources: Keyboard smashing

Side channel defences: None

Postprocessing: Rebooted the machine