Altcoins Started Jun 3, 2026 7:24 PM

The Zcash shielded supply relies on trust, not math

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Jun 3, 2026 7:24 PM Last edited Jun 3, 2026 7:29 PM
#1

https://forum.zcashcommunity.com/t/orchard-vulnerability-successfully-remediated/55976

Zcash's supply has now relied on trust in all private pools. This is Zcash's second hidden inflation vulnerability: the worst class of vulnerability possible. Monero has never had a hidden inflation vulnerability.

You now have to trust that no one printed more shielded Zcash in the Orchard pool while the vulnerability was live, the math in Zcash does not protect you. Orchard is now effectively a trusted pool, technically inferior to FCMP++.

The Zcash turnstile mechanism only mitigates damage. The turnstile would show that someone is unshielding a wholeeee lot of printed Zcash triggering the turnstile (the Orchard pool is almost 30% the total supply currently). There is no way of knowing if an attacker is currently sitting on infinite Zcash in the Orchard pool and already exploited the vulnerability.

It's reckless and irresponsible that the Zcash ecosystem downplays this vulnerability.

"ZCASH WAS NEVER DOWN. FUD"

This distracts from the MAJOR CRITICAL vulnerability that was just found (and YES, the Orchard pool was in fact down while they rolled out the patch).

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Replies

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Jun 4, 2026 1:58 AM
#12

@xmr_is_goated I'm not pulling shit out of my ass I just don't want to be reactionary.
Thanks for the tweets though. I'm currently out at the moment but I'll take a look at this later.

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Jun 4, 2026 2:01 AM Edited Jun 4, 2026 2:02 AM
#13

Your intellectual honesty is genuinely appreciated. It's good to steelman.

I'm telling you though: unless the attacker had made some dumb mistake, there is no way that metadata would leak the exploit. How am I supposed to prove a negative here? You're making an assertion that doesn't make sense.

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Jun 4, 2026 2:04 AM
#14

idk the exact details but metadata is always available, even in "perfect" conditions.
Wouldn't be surprised if zcash is downplaing this though. They are fraudulent.

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Jun 4, 2026 2:27 AM Edited Jun 4, 2026 2:28 AM
#15

idk the exact details but metadata is always available, even in "perfect" conditions.

In this case, it isn't. That's why they have no code to detect it and prevent it... EDIT: They only prevent it going forward for NEW transactions.

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Jun 4, 2026 4:10 PM
#17

https://xcancel.com/jswihart/status/2062399877846598037

tulipking:

  1. As far as I can tell nobody has any provable evidence there’s not newly minted shielded zec in the orchard pool therefore people’s worries are reasonable

CEO of Zcash jswihart:

  1. No one can prove someone minted extra coins, though highly unlikely. No one can prove that someone did. There is zero evidence that it was exploited. Same was true with the Sprout vuln years ago.

Of course no one can prove someone minted extra coins, the bug was UNDETECTABLE inflation lmao. Notice how he doesn't actually address the point. He instead spins it to sound not as bad.

Zcash has had detectable inflation bugs in the past too. The Sprout one referred to there was undetectable, that is why he references it there.

The Zcash cabal deceit is insane.

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Jun 4, 2026 4:45 PM
#18

yeah after reading more into this they are definitely being purposely obstuse. they have no way of checking if an exploit happened or not, with the exception being more zcash leaving the shielded pool than what they have in there.

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Jun 4, 2026 4:52 PM
#19

Finally! Thank you! It's driving me nuts how they're doing this, and only borderline schizo Monero poasters and a small minority of people recognize it.

This is a very real event that showcases Monero's tech over Zcash's. The Orchard pool is irreparably broken!

You can't verify the Zcash supply with math.

You can verify Monero's supply with math.

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Jun 4, 2026 5:07 PM
#20

@xmr_is_goated not that I ever needed a reason to believe otherwise, but it's good to know that not even with their corporate advantage can they come close to Monero and the tech behind it.

The things that happen when one is pure intentioned while the other isn't.

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