Costs, licensing, consumer protection Privacy, self-custody, censorship resistance

Slush Card

Name: Slush Card
Brand: Mysten Labs

Mysten Labs · Visa

3.0/5 2.6/5 · Data verified on Jun 22, 2026

Slush Card is the payment card of Mysten Labs' self-custody Slush wallet (formerly Sui Wallet + Stashed), issued through RedotPay's card programme on the Visa network and tied to the on-chain Sui balance. As of 22 June 2026 the product is NOT yet live: it is in pre-launch with a waitlist (open to US users, with a broader launch expected in 2026). The card fees (issuance, annual, FX markup, cashback) are not yet documented by official sources (listed as 'TBA'), so they are reported as 0 pending verifiable data. Available as virtual and physical card, usable at ATMs, in stores and online, stated to be accepted in 150+ countries and over 130M merchants. KYC required.

Transparency: Very low

31/100 · see methodology

Data exposure: Minimal

31/100 · lower is better for sovereignty · methodology

Data & conditions

Network	Visa
Fund custody	Self-custody (funds in your control)
Issuance fee	Free
Annual fee	Free
ATM withdrawal	Free
FX markup	0%
Cashback	—
Chains	Sui
On-chain settlement	Yes
Contactless	Yes
Virtual card	Yes
KYC	Full
Privacy	4/10
Supported countries	US
Funding / solidity	Mysten Labs, Inc. è la società dietro la blockchain Sui e il wallet self-custody Slush. Fondata nel 2021 a Palo Alto (California) da cinque ex ingegneri di Meta provenienti dal progetto Diem/Novi (Evan Cheng, Sam Blackshear, Adeniyi Abiodun, George Danezis, Kostas Chalkias).
Estimated net annual cost	€0/year
Regulator	RedotPay (Hong Kong licence; US FinCEN-registered MSB) — issuer partner
Segment	B2C
Funding / solidity	Mysten Labs, Inc. is the company behind the Sui blockchain and the self-custody Slush wallet. Founded in 2021 in Palo Alto, California by five former Meta engineers from the Diem/Novi project (Evan Cheng, Sam Blackshear, Adeniyi Abiodun, George Danezis, Kostas Chalkias).
MiCA / License status	RedotPay card programme (issuer partner)

Strengths

Spend directly from the self-custody on-chain Sui balance without selling assets first.
Visa network with stated acceptance in 150+ countries and 130M+ merchants; virtual and physical card.
Backed by Mysten Labs (the Sui team) with issuance via RedotPay.

Self-custody: funds stay in your wallet — the platform cannot touch them.

Weaknesses

Not yet live: waitlist only, initially for the US.
Fees (issuance, annual, FX, cashback) not yet published ('TBA').
Requires full KYC, so no anonymous use.

Full KYC required: verified identity, zero pseudonymity.

Verdict

C C ★ 3.0/5 ★ 2.6/5 Estimated net annual cost: €0/year

Protection cannot be conclusively assessed: the product is not yet live and its terms (fees, conditions, insurance coverage) are unpublished. The card is self-custody (the balance stays on-chain on Sui under user control), issued through RedotPay's programme on the Visa network. RedotPay operates under a Hong Kong licence and is registered in the US as a Money Services Business (MSB) with FinCEN. Full KYC required.

Medium sovereignty profile for a card: the balance is self-custody on-chain on Sui (the user keeps the keys and need not hand funds to a custodian before spending), a real advantage over custodial cards. However mandatory full KYC and reliance on the RedotPay/Visa issuer for settlement reduce anonymity and introduce censorship/blocking points.

Privacy & anonymity 30% 1.0

Fund control 20% 5.0

Censorship resistance 20% 1.5

Costs 10% 5.0

Promp's editorial rating based on real fees and net annual cost. Promp reviews third-party products independently.

"Sovereignty" rating: score computed on privacy/anonymity (30%), fund control (20%), censorship resistance (20%), trustless/auditability (20%) and costs (10%). Same data, different weights.

FAQ

Is the Slush Card available yet?

No. As of 22 June 2026 the Slush Card is in pre-launch: only a waitlist is available (initially for US users), with a broader launch expected during 2026. It is not yet usable by the general public.

Who issues the Slush Card and on which network?

The Slush Card is the product of Mysten Labs' self-custody Slush wallet (the team behind the Sui blockchain) and is issued through RedotPay's card programme on the Visa network, settling directly from the on-chain Sui balance.