Coinplug is a South Korean blockchain company founded in 2013 by engineers with backgrounds in both Silicon Valley and Korea. Originally launched as a Bitcoin exchange and payment processing platform, Coinplug evolved into a broader blockchain technology company with a strong focus on decentralized identity (DID) and enterprise blockchain solutions.

The company developed MetaDium, a blockchain-based digital identity platform, and its consumer-facing app Keepin, which allows users to manage verifiable credentials and authenticate their identity without relying on centralized authorities. Coinplug holds one of the largest blockchain patent portfolios in South Korea, with hundreds of patents covering areas including digital identity verification, cryptocurrency payments, and blockchain data management.

Coinplug has partnered with Korean government agencies and enterprises to deploy blockchain-based identity and document verification systems. The company was an early participant in South Korea's DID Association, working alongside major Korean conglomerates to establish interoperable decentralized identity standards. Coinplug has raised significant venture funding from Korean investors including SBI Investment, Korea Investment Partners, and others.

Key Facts

• Founded: 2013
• Headquarters: Seoul, South Korea
• Focus: Decentralized identity (DID), blockchain patents, enterprise solutions
• Notable product: MetaDium identity platform

Venture Capital Rounds