News for hackers. Stuff that matters.

A comment on Microsoft is shutting down its Azure Blockchain Service. Parent comment

Re:Microsoft is shutting down its Azure Blockchain Service by daniellarusso on Thursday May 13, 2021 @07:28AM (#27140906)
A blockchain does not require anything beyond ensuring the prior entries checksums make sense.

Making past entries immutable is the purpose.

Proof of work and distributed mining don’t need a blockchain.

Have you heard of hashcash? It is proof-of-work concept to prevent email spam.

https://en.m.wikipedia.org/wiki/Hashcash

[ Parent | on HN ]
Re:Microsoft is shutting down its Azure Blockchain Service by 74d-fe6-2c6 on Thursday May 13, 2021 @07:33AM (#27140942)
what prevents the entity controlling the blockchain from recursively changing data and adjusting the checksums?
[ Parent | on HN ]
Re:Microsoft is shutting down its Azure Blockchain Service by daniellarusso on Thursday May 13, 2021 @08:01AM (#27141124)
Paraphrasing Achebe here: “that until the lions have their own historians, the history of the hunt will always glorify the hunter.“

This is also an issue with a 51% attack.

[ Parent | on HN ]