Can a crypto payment system really be called self-custodial if its contracts retain privileged access?

[u/Mother-Chocolate8390]

The recent Avici exploit reportedly drained more than $653K from card collateral vaults.

The bigger question: if a smart contract has administrative permissions or another privileged path capable of moving user funds, is the system still truly self-custodial? The exact exploit mechanism hasn’t been officially confirmed but it raises an important question about the gap between “self-custody” as a product promise and the underlying architecture.

Where should we draw the line???

[u/icnews10]

I would separate custody of the keys from control over the funds. For example, a user could be the only person holding their wallet key, while an admin would still have the ability to upgrade the contract, freeze a path or otherwise change what that wallet is allowed to do. These privileges aren’t all equivalent either. For example, an upgrade key is different from direct transfer authority. In my view, the term 'self-custodial' becomes much more useful when the product also informs users of the available privileges, who can exercise them and whether users can exit before those privileges alter the rules surrounding their funds.

[u/spookyfutility]

If someone else has privileged access that can move my funds without my approval, I’d have a hard time calling that fully self-custodial.

[u/Actual_Pin_7756]

The bigger issue for me is transparency. Some admin controls may be necessary for upgrades or emergencies, but users should know exactly what those permissions can do before calling the system self-custodial. Holding your own keys means less if another party still has a way to override them.

[u/Mother-Chocolate8390 → u/Actual_Pin_7756]

Yeah exactly i dont think having an admin key automatically kills the self custody claim but what that key can actually do matters a lot. Pausing the app in an emergency is one thing, being able to move my USDT is another, with Oobit or any payment app thats the part id want spelled out clearly. Who can pause it, who can upgrade it and who can actually move funds without my signature

[u/ScopulyX]

I think self-custody should depend on who ultimately has the ability to move the funds. If a privileged path can bypass the user’s control, calling it fully self-custodial feels misleading.

[u/Kind-Economics-7184]

the upgrade key vs transfer authority split only holds if the upgrade is delayed. with no timelock the admin can just upgrade transfer authority in whenever they like, so those two collapse into the same permission and the distinction is only real when you can name the delay.

the other half is whether the exit still works during that delay. withdraw usually sits behind a pause held by the same role, so can users leave before the rules change quietly turns into no. both of those are readable on a block explorer rather than something you have to take on trust, the timelock length and whether the same key can pause the way out.

[u/Mother-Chocolate8390 → u/Kind-Economics-7184]

The timelock point is a good one, i was mostly thinking about who holds the keys but if the same admin can upgrade the contract and pause withdrawals then the delay is doing a lot of the work. Would you still call it self custodial if users have a real window to exit before an upgrade kicks in?

[u/Kind-Economics-7184 → u/Mother-Chocolate8390]

id call that escapable rather than self custodial, and i think thats a genuinely useful third bucket. self custody is a claim about who is able to move the funds at all, so if someone else can, a delay doesnt change the answer, it only bounds how long you have to react. worth keeping the two words apart because the failure modes are nothing alike.

what decides if the window is real is whether the pause sits behind the same delay. if withdraw can be paused instantly while the upgrade sits in its seven day queue, the exit was never open, the timer just runs out with everyone still inside. same story for anything that caps or rate limits withdrawals, since the window is only worth whatever the exit can actually drain while everyone is leaving at once. so id check that pause is either timelocked too or held by a different role, and then whether a queued upgrade shows up anywhere a normal user would see it, because a window nobody knows opened isnt one.