블록체인은 블록체인 네트워크에 참여하는 모든 노드에 동일한 원장을 중복 저장함으로써 참여자 모두에게 데이터가 공개되며, 이를 통해 데이터의 투명성을 확보하고 참여자 다수의 합의를 통해 데이터의 신뢰성을 보장하는 기술이다. 현재의 블록체인 시스템은 이러한 데이터 소유의 탈중앙화를 통해 데이터의 신뢰성을 확보할 수 있게 되었으나, 합의, 저장, 분석 등 여러 방면에서 확장성 한계로 인해 주로 가상 자산의 거래에만 활용되고 있다. 본 논문은 다양한 일반 산업 및 비즈니스에서의 블록체인 기술의 활용성을 증대하기 위해 요구되는 데이터의 다양성, 대규모 용량, 대용량 데이터, 트랜잭션 처리 속도 등 저장 확장성 문제를 해결하기 위한 고확장성 블록체인 저장 기술을 제안하고 설계 개념 및 특징, 그리고 고확장성 저장 기술을 제공하기 위한 시스템 SW 구조를 제시한다.
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