Automate your stablecoin stack: wallets, payments and payouts, on one open platform.
github.com/fystack
Based in Viet Nam
- Tweets 955
- Following 84
- Followers 501
- Likes 460
New ebook: Virtual Asset Licensing Across the Middle East.
VARA, ADGM, DIFC, Federal CMA, and CBUAE each have their own licensing process. They also have different capital requirements and timelines.
If you're building custody, exchange, or stablecoin infrastructure in this region, you need to understand these requirements.
The guide breaks down all five frameworks, plus Bahrain's CBB as an alternative entry point. It also covers five compliance risks that can catch even well-funded teams off guard.
Download it here: link.fystack.io/compliance.m…
2
4
90
Going on-chain changes what “card security” means. Your card program may already have authorization, processing, and settlement figured out.
But once on-chain liquidity enters the stack, there’s a new question:
Who can move the money?
A settlement wallet has to stay online, move funds frequently, and connect to multiple systems.
So securing it isn’t just about protecting the private key.
It’s also about:
→ Who can initiate a transaction?
→ How much can they move?
→ What happens when an authorized system is compromised?
We looked at real incidents across crypto payment infrastructure, from Alphapo and CoinsPaid to Multichain and 3Commas, and broke down the security lessons for teams running on-chain card programs.
Read the full breakdown: fystack.io/blog/crypto-card-…
1
1
3
78
Really appreciate you digging past the headline, @shelleymaeph.
Your point about the gap between “a cool wallet” and infrastructure a regulated financial company can actually deploy really hit home for us at @fystack.
We’ve been on that journey ourselves, working with teams across fintech, crypto cards, payments, and digital assets. A hackathon demo is one thing. Turning it into infrastructure that a real business can rely on takes persistence, iteration, security, compliance, and a lot of learning from actual customers.
And we think that’s the part worth sharing more openly.
So beyond product updates, we’ll be sharing more about how we actually build and deploy custody infrastructure, including the technical decisions and lessons along the way.
Follow @fystack if you want to follow the journey. Would love to hear your thoughts as we share more.
7
Building digital asset custody infrastructure in-house can mean months of engineering, ongoing maintenance, and security work.
Fystack provides compliance-ready custody infrastructure for financial companies building stablecoin and digital asset products.
Teams can run Fystack on their own cloud or on-prem, keeping control of their keys, data, and compliance while managing wallets, stablecoin payments, treasury, and transaction policies through one API
fystack.io/
2
2
8
199
MPC custody, built for @StellarOrg
We just deployed a fully self-hosted, open-source MPC wallet on Stellar, built on Mpcium, our open-source MPC engine.
Keys are split across independent nodes and never exist in one place. A transaction only goes through when enough nodes agree, using threshold signing to remove the single point of failure.
In this demo, we spin up the MPC nodes with Docker, generate a Stellar keypair, and walk through deposit, withdrawal, signing, and swap.
Built for fintechs, exchanges, and developers who want full control over their keys and infrastructure.
Thanks to @VN_Stellar team for the support!
2
1
8
1,372
Stablecoin settlement is not about making card payments faster. It's about giving banks and fintechs more control over when and how settlement liquidity moves.
But that flexibility comes with new demands: custody, compliance, transaction controls, reconciliation.
𝗪𝗵𝗮𝘁 𝘁𝗵𝗲 𝗮𝗿𝘁𝗶𝗰𝗹𝗲 𝗯𝗿𝗲𝗮𝗸𝘀 𝗱𝗼𝘄𝗻
↳ What actually changes
↳ Where the liquidity benefit comes from
↳ What stays the same for customers
↳ What banks and fintechs need to build or integrate
Read the full breakdown: fystack.io/blog/stablecoin-c…
2
5
121
Different rails. Same missing layer.
JPMorgan chose Base. Citi runs its own ledger. 21 banks just agreed on a shared stablecoin.
But settlement is only one layer. The real challenge is the infrastructure underneath: custody, policy enforcement, approvals, and operational control.
Settlement tells money where to go. Infrastructure decides if it can move.
We break down why this layer matters in our latest blog. 👇
fystack.io/blog/tokenized-ba…
2
7
97
A look back at Hack Seasons Conference Ho Chi Minh City.
The digital asset space is expanding beyond the blockchain-native world. It’s no longer just blockchain-native builders - teams from fintech, financial services, and infrastructure are joining in, each with a different view of where the market is heading.
We saw this firsthand at the @fystack x @securosys booth, with conversations ranging from teams exploring digital assets for the first time to businesses already looking at how to integrate them into their existing operations.
Thank you @thesensedotsol team for the amazing video!
4
8
1,443
Last week, @fystack joined Hack Seasons Conference Ho Chi Minh City as a sponsor, alongside @securosys, @Ledger, @SonicLabs, @birdeye_so , @Mercuryo_io and others.
What stood out throughout the day was how naturally conversations moved between traditional finance and digital assets.
We had the chance to speak with banks, payment companies and exchanges about where the industry is heading, from stablecoins and institutional adoption to custody, compliance and security.
One thing was clear: the conversation is becoming much more practical. It's no longer just about whether institutions are interested in digital assets, but how they can actually operate them securely and compliantly.
Thanks to @mpost_io team for the support throughout the event!
1
14
27
1,326
Institutional digital assets need infrastructure that fits the way real teams operate - from wallet management and approvals to security and compliance.
See you at HSC on the 15th!
Meet @fystack at HSC Ho Chi Minh - wallet & custody built for institutions
Fystack builds wallet and custody infrastructure for payment companies, fintechs, and enterprises moving onto stablecoin rails and tokenized assets - full access to blockchain without an in-house Web3 team
What's under the hood:
🔑 One orchestration layer across every deployment - wallet lifecycle, policy engine, multi-sig approvals, full audit trails
🛡️ Keys live in an MPC quorum, a certified HSM, or both - your choice
🏦 Built for institutions: workspaces, roles, and approvals that map to how a real treasury operates
🌐 10+ blockchains supported · 20+ production self-hosted deployments
👥 Fystack shares the booth with Securosys - Swiss security hardware trusted to protect national interbank infrastructure. Two teams, one stand: catch both in one stop
Want to meet the team in person on the 15th? Book a slot in advance - reach out to t.me/poshivanik_anna
See you in Ho Chi Minh☕
2
8
330
Our founder @thicody will be at Hack Seasons Conference on August 15!
At @fystack, we’re building digital asset infrastructure for fintechs - helping teams launch wallets, custody, and on-chain products without having to build the entire infrastructure from scratch.
You can also find us at our booth with @securosys, where we’ll be showcasing what we’ve been building and talking all things digital assets.
See you there!
7
192
Fystack has partnered with @securosys to bring HSM-backed deployments to our custody platform for banks and institutional clients.
While MPC remains our default architecture, institutions can now choose between MPC and HSM based on their security, compliance, and operational requirements - all through the same orchestration layer for wallet management, policy controls, approvals, and audit trails.
Together, we're delivering more flexible, institutional-grade digital asset custody.
#DigitalAssetCustody #MPC #HSM
2
4
143