nadahalli

6 ms·

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Show HN: Math and Computational Thinking Worksheet Generator for Kids (8-11)(sipatsi.com)
1 points by nadahalli 1mo ago|1 comments
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by nadahalli 1mo ago
A fresh printable worksheet of maths and computational-thinking puzzles for kids. Every question, every answer, and every wrong answer is computed by a program, not written by an AI. The generators and solvers are "correct by construct
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by nadahalli 2y ago
[pedantic hat on] Bitcoin doesn't use encryption. You mean digital signatures - and yes, we use signatures everywhere in public key cryptography.
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by nadahalli 2y ago
You will like this 2020 classic piece by the folks at Paradigm: https://www.paradigm.xyz/2020/08/ethereum-is-a-dark-forest
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by nadahalli 3y ago
The hashing part is kind of orthogonal. The real negative outcome of quantum computers getting reliable and powerful would be that ECDSA would be broken (using Shor's algorithm variants). This would make every coin stealable by anyone
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by nadahalli 4y ago
I started reading the article assuming it was an April fool's joke. After a bit into it, I thought it was not a joke. When the self-deprecation began, I was again convinced it was a joke - but at the end of the article, I think this is
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by nadahalli 5y ago
That's the entire point. Bitcoin has just one use case, and it's very inefficient design is tailor-made for that one use case. Alt-coins have use cases that can all be solved by AWS. The inefficient design is er....inefficient for
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by nadahalli 5y ago
Zero Knowledge Contingent Payments are one approach. Encoding everything that you might want to buy as an input to a ZKP system is a stretch, obviously. But at least, that's the spirit of this philosophy. https://bitcoincore
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by nadahalli 5y ago
I was like "This cannot be the top comment on HN". It is. Sigh.
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by nadahalli 5y ago
As for "Crypto-less federated systems like Mastodon and friends" - you have to ask yourself why they don't work at scale. That's the key insight of Bitcoin. You need to have a system-native incentive for the nodes to do
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by nadahalli 5y ago
> If we could magically make 100x the gold, that would be great! Current gold investors would be sad but it would be a win for the world. I am not sure about that. If there were a magical new way of creating gold to inflate its supply, i
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by nadahalli 5y ago
You are on the wrong forum my friend. Austrians and the HN community talk past each other because it's not easy to get the latter (which I am a part of) to see that their large salaries in FAANG companies are partly due to the Fed larg
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by nadahalli 5y ago
SlowMist has a non-humorous writeup. https://slowmist.medium.com/the-root-cause-of-poly-network-b... I am still waiting for Rekt to cover this one.
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Stacker News: HN like site where upvotes require 1 satoshi(stacker.news)
2 points by nadahalli 5y ago|0 comments
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by nadahalli 5y ago
Most smart contracts on Ethereum, or other blockchains are only immutable in their marketing material, but not in practice. Either they use an obvious PIMPL/Proxy contract (OpenZeppelin, a popular smart contract library suite has proxy
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by nadahalli 5y ago
That'd be quite expensive. And as you manipulate prices across blocks, arbitrageurs would arb it back to "market price". Uniswap V3 allows for a 3rd party smart contract to ask its Uniswap V3 Oracle to employ a 9 day moving a
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by nadahalli 5y ago
Many European countries also charge negative interest rates. In Switzerland, where I live, bank balances above CHF 100K gets a flat -0.75% interest rate. Just saying.
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by nadahalli 5y ago
I am curious why the author thinks that security is not a commodity.
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by nadahalli 6y ago
That primitive has not been invented (maybe yet). Till then, we have Bitcoin.
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by nadahalli 6y ago
For those who already know about Bitcoin's timestamping really well, it's worth reading about the time-warp attack. David Harding wrote a great answer about it on StackExchange ages ago: https://bitcoin.stackexchange.co
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by nadahalli 6y ago
This is deflation, and turns out everyone hates deflation. Just to be clear, I am with you here.
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by nadahalli 6y ago
That's true. It's a verifiable "burn of electricity". The only upside to the burning is the verifiability. If there was some other way to generate this verifiable scarcity of something that we all agree on (electricity i
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by nadahalli 6y ago
There's your argument for Bitcoin. It cannot be planted by anyone, like tulips. Its supply cannot be increased arbitrarily. Tulips, in fact, could be a bit more complicated. Bitcoin is quite simple that way. Spent electricity is stored
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by nadahalli 6y ago
Just as an aside, you cannot build the Bitcoin blockchain overnight as well - because of proof of work and network effects of bitcoin full nodes. That gives it "value". It's function is to serve as that - a store of value.
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by nadahalli 6y ago
Merkle trees are everywhere in Bitcoin (full node or otherwise). The block header has the merkle root of all transactions that are a part of that block. The witness merkle root is stored in the coinbase transaction (if the miner is segwit e
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by nadahalli 7y ago
I am from Bangalore, and in 2012, I tried an experiment in an auto-rickshaw (tuk-tuk). I offered to pay the driver double the meter price if he didn't honk even once during an upcoming 1 hour-ish ride. The driver thought I was nuts to
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by nadahalli 8y ago
There is some discussion on their forum on how to set the appropriate difficulty for the genesis block, and how to estimate the number of miners that will be around at the beginning. Good reading: https://www.grin-forum.org/
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by nadahalli 8y ago
It's possible that I want my passwords (of other sites) synced on all instances of Chrome across my devices, but I don't want Google to know these passwords (obviously). They have an "encrypt-passwords" feature for that.
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by nadahalli 12y ago
Not you. But (someone connected to)+ you.
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Is CIA-link messing with India's Unique Identification Number project?(firstpost.com)
1 points by nadahalli 13y ago|0 comments

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