Ryan Cwynar
Principal Engineer at Telcoin. I work on stablecoin infrastructure. A lot of it sits between banks and chains, on-chain and off.
Principal Engineer at Telcoin
I work on stablecoin infrastructure. A lot of it sits between banks and chains, on-chain and off.
This is a personal page. It does not represent official Telcoin product claims, partnership statements, or financial advice.
Why stablecoins
Stablecoins are dollars on open networks. Making them work well is a payments problem and a systems problem at the same time. That's the part I like.
This is a personal page. Views here are my own, not Telcoin's.
What I work on
Payments infrastructure
Systems that move value between banks and chains. Mint and redeem flows, and the ledgers behind them.
Reliability
Production systems that move real money. Reconciliation matters a lot here. So does knowing what happens when something fails.
Cross-border value
Sending money across borders is still slow and expensive for most people. Stablecoins can change that. I work on the parts that make it hold up.
Writing & thoughts
Articles tagged stablecoins will show up here automatically.
The GENIUS Act isn't a policy memo. It's a production build checklist.
With the OCC finalizing its core GENIUS Act rule ahead of the January 18, 2027 go-live date, here is what an engineer actually has to build: per-brand redemption counters across every chain, a 1-coin retail redemption floor, daily reserve reconciliation, and holder-first bankruptcy records.
Pay a credit card from a stablecoin balance: why bill pay is the real unlock
Debit cards on stables are mostly solved. The real unlock is letting card autopay, rent, and utilities pull an ACH debit straight from a stablecoin balance—so your checking account becomes a dumb routing number instead of where your money lives.
How stablecoin freezes work on-chain (and why a fat-fingered transfer still isn't reversible)
To a user, a stablecoin freeze looks like one switch. To the engineer who builds it, it is an eight-step pipeline across smart contracts, signing roles, and multi-chain ledgers—and understanding how it works explains both what self-custody actually protects and what it doesn't.
Web 4 Is About Building Your Own Systems
Web 1 was looking stuff up. Web 2 was interacting on fixed platforms. Web 3 was moving money. Web 4 is people building the systems that solve their own problems, and letting those systems interact.
All the Money Is Coming On-Chain. Circle Arc Wants to Catch It.
Money is moving on-chain, and company chains like Circle Arc want to catch the flow. The corpo chain critique is fair. Spend, repay and borrow move anyway.
Why Everyone Wants to Be a Stablecoin Issuer (and What It Actually Costs)
Issue a reserve-backed stablecoin and you keep the T-bill interest and the mint key. Why everyone wants to be a stablecoin issuer, and what it really costs.
Follow the Float: Stablecoin Reserves, the National Debt and Who Gets Paid
Stablecoin reserves really do buy Treasuries. But the interest goes to issuers, distributors and the Treasury, not altcoin holders. An engineer's look at where the float goes.
What Is OUSD? The Open USD Stablecoin, Explained
What is OUSD? The Open USD stablecoin went live Sept 30, 2026. An engineer on what it changes (free minting, shared reserve income) and what it doesn't.
Where Does Stablecoin Yield Actually Come From? An Engineer Follows $1 Through the Reserve
Stablecoin yield comes from one place: interest on the T-bills, repos and bank deposits that back each token. The GENIUS Act bans issuers from paying it to holders, but exchange "rewards" fill the gap, and that gap is what sank the CLARITY Act. An engineer follows $1 through the reserve.
Are Stablecoins Safe? What Actually Protects Your Dollar, From Someone Who Built the Backend
Are stablecoins safe? Stablecoins aren't FDIC insured. Regulated, fully reserved coins are protected instead by 1:1 reserves in short-term government assets, redemption rights, monthly audited reserve reports, and GENIUS Act bankruptcy priority. Here's where each protection lives, and why September's depegs were different.
Connect
Happy to talk stablecoins, payments, or engineering.