Info

Source on GitHub

https://github.com/dkaraush/ton-web

Smart Contract Address

-1:d9bb6fde2410a2445f4e213013f5a0ac584a580a67478fa2992be4bae24c3079

Source on GitHub

https://github.com/dkaraush/ton-mixer

Smart Contract Address

-1:77f4c928f9546314ab00fc9176c4ea1cc1bae0e921d5241600f3e957e4bf0a2a

Testing and Issues

You can test this entry and submit issues during the testing period of the Blockchain Contest, Stage 2: Bonus Prize contest.

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.

Voting

5

Comments

Bold Wolf Mar 20 at 18:42
Grampay Commerce
Promotional webpage: https://grampay.org
Video presentation: https://youtu.be/Sg5n065wya0

Repository: https://github.com/dkaraush/grampay-commerce
Detail smart-contract description: https://github.com/dkaraush/grampay-commerce/tree/master/smc
Smart-contract address: 0:0064D45CE8E80F5A015F09978AA38B9A41493F1B88A9DCB597DE6D36E8200641

Grampay Commerce is a marketplace service for Sellers and Buyers with escrow payments and dispute system.
You can create your own shop in our telegram bot (https://t.me/grampayorgbot) and start selling your products!

Demonstrational shops are already done and you are welcome to test them out!
https://grampay.org/shop/dkaraush
https://grampay.org/shop/ceosvex
https://grampay.org/shop/jekapena
2
Bold Wolf Mar 20 at 18:58
Some screenshots of Telegram bot.
1
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Issues

Eager Cobra Apr 27 at 13:45
WEB SCORE: 5.5
Opening Section – 5
Concept Explained – 5
Language – 5
Bonus Usability: +0.5

Well-designed website (e-commerce style). Balanced info: opens with an easy-to-understand intro, moves on to more in-depth explanations and further details.

VIDEO SCORE: 5.41
Narration – 5
Visualization – 4
Concept Explained – 5
Bonus: Language +0.25
Bonus: Soundtrack +0.5

Snappy soundtrack, well-matched to easily readable captions. Visualization relies on app/web interfaces, but interface details are not always clearly visible, especially those on mobile (could benefit from using zoom to highlight important parts).

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Base Reward: EUR 9,000
Bonus: + EUR 2,000 (working demo shops/bot)

OLD BUGS FIXED: N/A (new contract)

NEW CRITICAL ISSUES:
It's possible to override the existing order address and then use a refund to steal money by crafting a hash collision. Ignores the existence of processing fees.

Bug Penalty: EUR 3,000

======
Total: EUR 8,000
Bold Wolf Apr 27 at 20:23
I'm glad you liked our project and presentation!
Thanks a lot for your audit: issue was really critical and it should have been fixed. I agree with a fair penalty.
Fast patch was done (https://github.com/dkaraush/grampay-commerce/commit/2afec244f7fc77073e657d8a8251db213a21d4ec), I'll update code and smart-contract ASAP.

Thanks again for this contest! 👍
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