Merging distributed computing with cryptographic techniques, decentralized technologies introduce a novel computing paradigm But is it really impossible to enforce changes in a blockchain, to change the history of transactions and redistribute coins On the parallelchain blockchain platform, poim is a decentralized and trustless mechanism for confirming the immutability of data
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When data is added to the blockchain, a cryptographic hash of the.
At its core, blockchain is a decentralized, distributed ledger technology that provides a transparent, immutable, and secure method of recording transactions and managing data.
Yet, immutability, a hitherto indisputable and highly advertised property according to which blockchain data cannot be edited nor deleted, remains the cornerstone of blockchain's security. The integration of blockchain technology with access control (ac) systems presents novel opportunities for enhancing data security within decentralized architectures, which is drawing increasing attention in data sharing (ds) applications However, existing works reveal a gap in achieving accountability for anonymous access in the absence of a centralized trusted authority Blockchains using proof of work are often referred to as immutable ledgers
Everything written in such a blockchain is there to stay It is impossible to alter or replace that information
