Reasons to prefer blake3 over sha256 \ stacker news ~bitcoin

Reasons to prefer blake3 over sha256 peergos.org/posts/blake3

1611 sats \ 21 comments \ @shyfire 13 Nov 2023 bitcoin

zaps forwarded to @benthecarman (33%)

141 sats \ 16 replies \ @quark 13 Nov 2023

Imagine if we go and fork to using Blake and make all miner ASICS useless 😂

420 sats \ 10 replies \ @jk_14 13 Nov 2023

Imagine if SHA256 is suddenly broken and make all miner ASICs useless then we go and fork to ASIC-proof GPU mineable algo, as Satoshi wanted: https://cointelegraph.com/news/satoshi-invented-gpu-mining-to-defend-the-network-says-early-dev

0 sats \ 8 replies \ @ek 14 Nov 2023

then we go and fork to ASIC-proof GPU mineable algo, as Satoshi wanted:

maybe I didn't read the article properly since I already know the story from another source

but where in this is mentioned that Satoshi wanted an ASIC-proof GPU mineable algo?

0 sats \ 7 replies \ @jk_14 14 Nov 2023

"the big attraction is that anybody can download Bitcoin and start mining"

and he wanted "big attraction" or he didn't want ?

0 sats \ 6 replies \ @ek 14 Nov 2023

Why remove the "But right now" from the quote?

The actual quote is:

"But right now, the big attraction is that anybody can download Bitcoin and start mining with their laptop."

0 sats \ 5 replies \ @jk_14 14 Nov 2023

so wouldn't he like to have a big attraction as long as possible - like almost every human being? :)

0 sats \ 4 replies \ @ek 14 Nov 2023

Yes but not necessarily as "anybody can download Bitcoin and start mining with their laptop". Most people probably stopped mining after they found out within a few days that it makes their machine too hot or too slow, it's too noisy, etc.

So it was always only the initial attraction. Nowadays, I would say the big attraction are the crazy bull markets.

So isn't bitcoin still a big attraction?

Since we're here thanks to all previous bull markets?

And because enough people got interested in bitcoin early on for whatever reasons?

0 sats \ 3 replies \ @jk_14 14 Nov 2023

most people probably bought second GPU in pre-ASIC era, that's why you had bull markets (network were rising)

the biggest attraction would be to have a steady and sure 2% increase per month of Bitcoin purchasing power :)

view replies

0 sats \ 0 replies \ @chungkingexpress 13 Nov 2023

Fascinating read, and other details?

0 sats \ 4 replies \ @shyfire OP 14 Nov 2023

Seems like keccak is the ASIC friendly replacement for sha256, not Blake.

0 sats \ 3 replies \ @anon 14 Nov 2023

No, keccak isn't implementable with SHA256 hashers. You'd have to make a whole new ASIC, at which point keccak or Blake could be implemented in the hardware just as easily.

0 sats \ 1 reply \ @shyfire OP 14 Nov 2023

https://x.com/zooko/status/1652868787195219969?s=46

0 sats \ 0 replies \ @petertodd 14 Nov 2023

That reply is wrong in the context of PoW mining, as PoW mining is already trivially parallelizable.

0 sats \ 0 replies \ @shyfire OP 14 Nov 2023

deleted by author

100 sats \ 2 replies \ @benthecarman fwd 13 Nov 2023

Why do you forward to me? I have nothing to do with this lol

200 sats \ 0 replies \ @shyfire OP 14 Nov 2023

Haha I had a draft post about mutiny from weeks ago. Then when i went back and cleared the post details, the forward stuff was hidden and I didn't realize

0 sats \ 0 replies \ @netstatic 13 Nov 2023

I guess I'll have to delete the "blake hashers" telegram group using your twitter profile pic as the figurehead then 😬 😂

0 sats \ 0 replies \ @anon 14 Nov 2023

NIST/NSA have repeatedly signaled lack of confidence in SHA256: first by hastily organising the SHA3 contest in the aftermath of Wang's break of SHA1

"No: SHA2 lacks the structure the SHA1 attack relies on it (SHA1 has a linear message schedule, which made it possible to work out a differential cryptanalysis attack on it)."

BLAKE3 is much more efficient (in time and energy) than SHA256, like 14 times as efficient in typical use cases on typical platforms.

That advantage isn't there any more now that dedicated SHA256 instructions have been added to x86, ARMv8, and other commonly used platforms.