Crime Evidence Over Blockchain

Blockchain is a digital ledger of transactions that duplicated and spread over the whole network computer systems on blockchain, it system preserving information in way makes difficult or impossible to edit hack. Collecting, identifying, evaluating, analyzing, preserving, presenting evidence task existing forensics. That's where blockchain'sdecentralized nature comes into play, with forensic data being stored private using blockchain's nodes peer-to-peer network. Digitalforensics will also be more secure,and investigation transparent those other side jurisdictional border. In criminal process, frequently changes hotblockchain, unchanging such as videos are cold blockchain. this we Ethereum concepts implementing smart contracts. Keywords - ledger, chain custody, Hyperledger fabric, forensic.