Abstract
The blockchain system uses hash functions. Hash is used in the blockchain to mark each block of data. Hash function algorithms map a string that is usually hexadecimal of any size to a sequence of fixed-size bits. This journal will discuss the distributed hash model for immutable blockchain node storageThe methodology used in the preparation of this research is mind mapping and literature review, namely the collection of scientific journals, articles and ebooks. Storage of nodes on the blockchain using a distributed hash model. The distributed hash model only stores a portion of the block data at each node, and the block data is taken as a resource. A hash connects each block with the previous on the blockchain, so the entire blockchain transaction cannot be changed or deleted. For further research will expand the research topic regarding storage immutability on the blockchain so that it becomes more complete and detailed.
Highlights
The popularity of using digital currency, namely cryptocurrency for virtual transactions, is increasing
Because blockchain technology requires that each node stores all block data completely, which puts great pressure on the node storage system in the blockchain network and seriously limits the increase in computer access to the blockchain system [6]
The discussion of this paper is to analyze the immutability of blockchain node storage using a distributed hash model, so that the blockchain node storage is immutable or irreversible because it uses a hashing function
Summary
The popularity of using digital currency, namely cryptocurrency for virtual transactions, is increasing. Bitcoin uses a blockchain system for storage of transactions. Blockchain technology is registered in Bitcoin cryptocurrency transactions, the goal is to allow users to make transactions directly and be able to eliminate third party intermediaries [2]. Blockchain technology continues to be used, so there are problems in storage. Because blockchain technology requires that each node stores all block data completely, which puts great pressure on the node storage system in the blockchain network and seriously limits the increase in computer access to the blockchain system [6]. The blockchain uses a hash model for node storage. Hash functions convert any text or file into text strings of the same length. Blockchain technology can save time and money in the transaction process and blockchain which has decentralized characteristics, namely a system that gives everything to all block chain users and the absence is prioritized, because they all have the same rights [7]
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