January 2020
Intermediate to advanced
530 pages
11h 11m
English
Content preview from Blockchain Development for Finance Projects
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Building a method to write the MTH and the FTH to the blockchain
The pWrite method takes the last MTH and FTH as input and writes them to the blockchain. The hashes are indexed in the blockchain by the timestamp at which the hashes where calculated. This is done so as to create a timestamped audit log of all the times that a new entry was recorded for the secured directory in the blockchain.
- The pWrite function is similar in structure to bWrite. It first defines a new wallet object and a gateway to connect to our docsapp chaincode:
async function pWrite(FTH,MTH) { try { const wallet = new FileSystemWallet('/home/ishan/docsapp/wallet'); const userExists = await wallet.exists('user1'); if (!userExists) { console.log('An identity for the ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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