Every time someone sends a stablecoin or approves a payment from a crypto wallet, a piece of mathematics vouches that the transaction is genuine. Most of that math comes from public key systems such as RSA and elliptic curve cryptography, which hold up today because ordinary computers would need an impractical amount of time to crack them. A sufficiently powerful quantum computer would change that equation, and a growing part of the security industry is working to replace those systems before that happens.
Much of the groundwork is already in place. In August 2024, the U.S. National Institute of Standards and Technology (NIST) finalized its first three post-quantum cryptography standards, known as FIPS 203, FIPS 204, and FIPS 205. A draft NIST transition plan proposes deprecating widely used algorithms such as RSA and ECDSA after 2030 and disallowing them entirely after 2035. Those deadlines can sound far away, but replacing the cryptography built into banks, payment systems, and hardware often takes years.
Blockchains face a sharper version of the problem. A September 2025 staff paper from the Federal Reserve Board and the Federal Reserve Bank of Chicago examined a threat known as “harvest now, decrypt later,” in which attackers copy data today and wait for a quantum machine that can unlock it. Because public ledgers are permanent and visible to anyone, the authors concluded that future upgrades cannot go back and protect records that already exist.
The stakes grow as stablecoins grow. These digital tokens, usually pegged to the U.S. dollar, had a combined market value of about $318 billion in early August 2026, based on CoinMarketCap figures reported by Stablecoin Insider, while their use for payments has been climbing. Large pools of long-lived assets moving across busy networks have created demand for companies that can add quantum-resistant protection without forcing people to change how they send or receive money.
One of those companies has now moved from testing to earning. BTQ Technologies Corp. (NASDAQ: BTQ, CBOE CA: BTQ), a Vancouver-based firm, builds post-quantum security for blockchain, stablecoins, and payments, and is also developing a full-stack neutral-atom quantum computing platform covering hardware and middleware. The company announced a three-year commercial agreement with the Kaia DLT Foundation to deploy its Quantum Secure Stablecoin Network, or QSSN, across the Kaia blockchain.
Kaia is a blockchain built for stablecoin settlement in Asia, and it connects to the LINE and KakaoTalk messaging platforms. Together, those platforms reach a potential audience of more than 250 million people, although that figure measures reach, not current QSSN users. QSSN will protect stablecoins at the account level on Kaia, which means tokens such as USDT are covered without their issuers having to do anything.
LINE NEXT’s Unifi Wallet, a stablecoin wallet that runs inside LINE Messenger, is expected to be among the first consumer apps to benefit. Since Unifi users already hold their assets on Kaia, the protection can start at the network level with no changes to the app.
The payment structure is what separates this deal from earlier pilots. Instead of a one-time licensing fee, BTQ will receive a share of the transaction fees generated by QSSN-secured activity. The company expects first-year revenue in the six figures in U.S. dollars, with revenue over the full term tied to transaction volume. That is a company estimate, and actual results will depend on how quickly stablecoin use grows on Kaia.
The agreement follows earlier work in South Korea, where QSSN was selected for a bank-led stablecoin proof of concept built on the Kaia mainnet. It also gives investors a concrete revenue figure to track as the rollout begins. Shares of BTQ were up more than 6% at $3.01 after the announcement.
Post-quantum security has long been treated as a problem for a later decade. That view is harder to hold now that NIST has set deadlines, Federal Reserve researchers have warned that exposed data cannot be recalled, and stablecoins carry hundreds of billions of dollars. The question has been whether customers will pay for protection before the threat arrives. This agreement offers an early answer, and transaction volume over the next three years will show how convincing it is.
