Korea's Stablecoin Settlement Platform · In Preparation

A new
financial rail,
settled in stablecoins.

Drawing on five years of operating our own Korean virtual-asset exchange (2015–2020), WaveString is building a stablecoin-based settlement platform together with issuance and multi-chain integration infrastructure.

See Business ModelPartner Inquiry
0 years+
SINCE 2014 · FINTECH HERITAGE
0 lines
SETTLE · PAY · MINT
0 chains
MULTI-CHAIN ROADMAP
2026
TARGET LAUNCH YEAR
01 · Business Model

Beyond an exchange.
A settlement layer.

We're not merely a virtual-asset exchange. With stablecoins as the axis, we are building three interconnected lines — a payments platform, a settlement rail, and our own stablecoin issuance.

01 / SETTLEMENT PLATFORM

Stablecoin Settlement Platform

A B2B platform for real-time FX and settlement between major stablecoins (USDT, USDC, PYUSD, DAI) and KRW. We are designing a single API that delivers real-time settlement, institutional-grade liquidity, and compliance-ready escrow.

REAL-TIME SETTLEMENT→
02 / PAYMENT PLATFORM

Payment Platform

An end-to-end payment platform in preparation for merchants, e-commerce, and cross-border remittance providers — checkout SDK, settlement dashboard, tax-invoice integration, and virtual-account rails unified on a single stack.

SDK · API · DASHBOARD→
03 / STABLECOIN ISSUANCE

Stablecoin Issuance & Integration

We're designing a full-stack issuer service — token issuance with multi-chain bridging, fiat reserve management, external-audit reporting, and on-chain Proof of Reserves.

MULTI-CHAIN · AUDITED→
02 · Heritage — Since 2015

Since 2014,
building exchanges.

WaveString Inc. was founded in 2014 by a team of financial-services professionals. We developed and operated COINIS — Korea's first crypto-grade HTS/MTS. A blockchain-based identity-platform patent, overseas exchange-solution delivery, a public delivery app, an NFT marketplace, and e-commerce settlement systems followed — 12 years of financial and blockchain experience now converging into stablecoin settlement infrastructure.

2014
Founding
Assembled by financial-services professionals
  • 14.05WaveString Inc. founded
  • 14.08COINIS exchange development begins
2015
COINIS HTS · MTS
Launched Korea's first crypto-grade HTS/MTS
  • 15.02COINIS open beta test
  • 15.05Paper-trading tournament held
  • 15.05COINIS exchange full launch
2016
KEEPIS
Blockchain-based identity & auth platform (Patent 10-1590076)
  • 16.01"Personal data management" patent registered
  • 16.02Venture company certification (KIBO)
  • 16.02NongHyup Bank NH Open Fintech integration
  • 16.04K-Global Security Startup selected (Keepis)
2017
Exchange Service Overhaul
Responding to the trading surge — many coins, fast and simple
  • 17.03COINIS redesign & expansion
  • 17.04"Trade-data sharing device" patent filed
  • 17.07COINIS Android app upgrade
2018
Global Exchange
Launching crypto exchanges in multiple overseas markets
  • 18.01Relocated to FSDC (Financial Security Data Center)
  • 18.02Coins listed — XRP · QTUM · STRAT · STEEM · XLM
  • 18.07COINIS web service launched
  • 18.08COINIS ICO platform service
2019
Exchange Solution Service
Crypto-exchange builds and consulting
  • 19.01Crypto wallet service development
  • 19.08Exchange solution delivery and operations/maintenance
2020–21
Blockchain Solutions · IT Consulting
Exchange tech support and public delivery-app builds
  • 20.04Public delivery-app development — Zero Pay integration
  • 21.01Overseas exchange development consulting
  • 21.04NFT marketplace development & consulting
2022–23
Pivot to Payment Settlement
From exchange consulting to payment & settlement solutions
  • 22.06Whoois Exchange launch consulting
  • 23.03Payment-settlement solution development
  • 23.09E-commerce enterprise solutions — build & operations support
2025–26
Stablecoin Settlement
Multi-path optimization settlement system built on stablecoins
  • 25.09Smart-service support program supplier registration · e-commerce settlement solution development
  • 25.12Korean patent application No. 10-2025-0188376
    "Stablecoin-based multi-path optimization settlement system and its operating method"
  • 26.01Stablecoin payment-settlement service development
03 · Services

Three products,
one rail.

Payments, settlement, and issuance — each an independent service, all running on the same stablecoin rail. Partners connect only the modules they need.

Module
Settle
Pay
Mint
Use Case
Who it is for
Institutions · PSPs · Cross-border
Real-time stablecoin ↔ KRW FX and settlement, OTC liquidity provisioning.
Merchants · E-commerce · PGs
Checkout SDK and dashboard; virtual-account and card-alternative payments.
Issuers · Banks · Token-Securities
Stablecoin issuance, reserve management, multi-chain bridging.
Delivery
How it is delivered
REST · FIX API · OMS
High-availability SLA as a design target; sandbox environment provided by default.
Checkout SDK · Widget
iOS / Android / Web — integration guides walk you through in 30 minutes.
Mint-as-a-Service
ERC-20, BEP-20, Solana SPL, Polygon, Base supported.
Compliance
Regulatory alignment
Korea Specific Financial Info Act · VASP registration
AML / Travel-Rule compliance and automated KoFIU (Korea FIU) reporting.
Electronic Financial Transactions Act · PCI-DSS
Periodic external audits, integrations with PGs and licensed e-finance operators.
Proof of Reserves
Monthly external-audit reports plus on-chain Merkle proofs published.
04 · How Settlement Works

KRW · Stablecoin · KRW.
All in under a second.

From the moment a stablecoin payment is received abroad to the moment KRW lands in a Korean merchant account — the full flow runs on a single rail.

Step 01 / Ingress
Consumer Payment
Payments received across diverse channels — stablecoins (USDT, USDC), cards, and local payment apps.
→
Step 02 / Exchange
Settlement Engine
Real-time FX, fee and withholding-tax calculation, and escrow deposit all execute automatically.
→
Step 03 / Egress
KRW Deposit
Same-day settlement into a name-verified KRW account, with a tax invoice issued automatically.
05 · Infrastructure

Principles learned
from running an exchange.

Four infrastructure pillars validated over five years of actually operating an exchange — and ported intact to the stablecoin settlement rail.

01
Cold Wallet · HSM Custody
By design, the majority of assets sit in segregated cold storage. Multi-signature signing is anchored in FIPS 140-2 Level 3 HSMs.
02
Low-Latency Matching Engine
Inheriting the low-latency matching design proven across five years of exchange operation. Architected for direct FIX 4.4 connectivity with institutional desks.
03
Multi-Chain Bridge
Roadmap spans Ethereum, BNB Chain, Solana, Polygon, Base, Tron, Arbitrum, and Optimism — one asset ID and settlement path across every chain.
04
AML · Travel Rule Engine
Global analytics integrations, inter-VASP travel-rule messaging, and an anomaly-detection rule engine as first-class components.
06 · By the Numbers

Operational capability, proven in numbers.

0 yrs
SINCE 2014 · CORPORATE HISTORY
0
REGISTERED · PENDING PATENTS
COINIS
KOREA'S FIRST CRYPTO HTS · MTS
T+0
REAL-TIME SETTLEMENT · DESIGN TARGET
07 · Partners & Integrations

Connecting payments,
finance, and chains.

We are pursuing integrations with Korean banks, PGs, global stablecoin issuers, and public-chain foundations. Partner logos will be disclosed in sequence after formal agreements.

Commercial Banks
PG Networks
Stablecoin Issuers
Token-Security Issuers
Layer-1 Chains
Layer-2 Rollups
Custody Vendors
Wallet Providers
Chain Analytics
AML / Compliance
KoFIU Reporting
VASP Consortium
08 · Get in Touch

Need payment or
settlement infrastructure?

Share your scale, integration scope, and regulatory requirements — we will respond within two business days.

wavestring@wavestring.comAPI Docs · Coming Soon
Office
WaveString Co., Ltd.
20 Digital-ro 31-gil, Guro-gu, Seoul
(Guro-dong, Ace Techno Tower 5) Suite 409
Business Reg. No. 113-86-84751
MON – FRI · 09:00 – 18:00 KST
PARTNERSHIP · INSTITUTIONAL INQUIRIES VIA EMAIL