South Korea's Biggest Credit Card Company Just Chose Solana to Power Payments for 28 Million Users
Forget the theoretical future of crypto payments. South Korea just made it real.
Shinhan Card — the country’s largest credit card issuer, with 28 million cardholders and roughly $145 billion in annual transaction volume — officially signed a Memorandum of Understanding with the Solana Foundation on April 30 to build a full stablecoin payment stack on Solana. And they’re not starting from scratch. They already finished six proof-of-concept projects.
This is what mainstream adoption actually looks like.
What They’ve Already Built
Before the ink was even dry on the MOU, Shinhan Card had completed a six-project PoC (disclosed April 9, 2026) covering:
- Blockchain-based P2P payments — direct user-to-user transfers on-chain
- Integrated digital asset payment infrastructure — connecting crypto rails to existing card networks
- Stablecoin-based hybrid check/credit products — a card where check mode triggers instant stablecoin withdrawal and credit mode uses stablecoin as collateral (built with Mastercard)
- Stablecoin cross-border remittance and settlement — replacing SWIFT for international transfers (built with Visa)
- Stablecoin payment/exchange/settlement network verification
- IC chip-based hardware wallet card payments — a physical card with an embedded crypto wallet (built with IoTrust)
The company worked with Visa, Mastercard, Fireblocks, Solana, and Korean tech firms Node Infra, Aton, and BlockOdyssey to build this. Not some obscure DeFi startup — the actual card giants of TradFi helped Shinhan put stablecoins on Solana rails.
What Happens Next
The MOU unlocks an advanced Proof of Concept throughout 2026 — this time with live merchant and customer simulations on Solana’s testnet. The focus areas:
- Non-custodial wallet integration: Shinhan is testing wallets where users hold their own assets with no intermediary. For a bank-affiliated card company, that’s a huge philosophical shift.
- Transaction speed and network stability under commercial load
- Oracle integration connecting real-world transaction data to on-chain DeFi protocols
- Hybrid finance models blending TradFi products with DeFi liquidity
If the pilot clears their benchmarks, Shinhan’s 28 million active users could start transacting on Solana before the end of the year.
Why Solana Won This
Shinhan didn’t pick Ethereum, Base, or any EVM chain. They picked Solana — and the reason isn’t hard to see. Solana currently processes transactions in 400ms at fractions of a cent. For a card company processing millions of daily purchases, that’s the only viable option if you want parity with Mastercard’s global rails.
Solana Foundation president Lily Liu reportedly drove this deal personally, holding discussions with Shinhan CEO Park Chang-hoon throughout 2025 before the formal signing.
The Bigger Picture
This deal lands as eight other South Korean card and financial institutions are reportedly building on Solana as well, according to Coindoo. South Korea has historically been one of the most crypto-active retail markets in the world — it’s not a coincidence that institutional adoption is accelerating there first.
Meanwhile in the West, Western Union already dumped SWIFT for Solana last week. The payment rails migration is no longer hypothetical. It’s happening quarter by quarter.
Why This Matters for Crypto Jobs
When a $145B/year payment processor goes all-in on Solana, it doesn’t just validate the chain — it creates a hiring wave:
- Solana smart contract developers (Rust/Anchor) will be in high demand, especially anyone with payments or DeFi protocol experience
- Stablecoin infrastructure engineers — the PoC used programmable-money smart contracts that need to be production-hardened
- Non-custodial wallet UX engineers — Shinhan explicitly called out the need to make self-custody “safe and easy-to-use” for mainstream consumers
- DeFi x TradFi integration roles — oracle engineers, compliance-aware protocol architects
- Korean-market Web3 business development — eight more Korean institutions are building; someone needs to liaise
South Korea is becoming a serious Web3 hiring market, and any developer with Solana pay stack experience is going to be very attractive to the financial institutions lining up behind Shinhan.
Looking to work at the intersection of DeFi and real-world finance? Browse open roles at Cryptogrind — the job board built for crypto builders.
