is Bitcoin actually secured? Why 256 bits is just ridiculously huge?

[art3m1s_37]

When I talk to my tech friends and other peers about crypto, bitcoin in specific. They always have a follow up question,
"Can it be hacked?", "What if someone guess your seed phrase", and many more questions.

So with my understanding in tech, I'll be sharing you and answering those question on how people get nervous about keeping their Bitcoin keys safe? Let me put your mind at ease with some perspective: Bitcoin private keys are 256-bit numbers, which is insanely large. Like… mind-blowingly large.

Here’s the math:

• A 256-bit key has 2^256 possible combinations.
• That’s roughly:

167,462,930,187,115,893,723,089,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936 (idk I just type random number )

But the point is that’s more than the number of you can imagine, it also more than the atoms in the observable universe

If you're still not convinced by that, Let’s put this in perspective with some thought experiments:

• 1. All GPUs on Earth brute-forcing keys:

             Even if every GPU on the planet worked non-stop generating trillions of keys per second, it would take longer than the age of the universe to try even a fraction of all possible keys.

• 2. Hypothetical perfect computers:

             Even a machine that could try 10^50 keys per second (faster than physics allows) would be hopelessly short.

• 3. Finding your key randomly:

             It’s like dropping a single grain of sand on Earth and then trying to pick that exact grain blindfolded. Only… Earth-sized sand piles multiplied by the number of atoms in the observable universe.



This is why Bitcoin security doesn’t depend on secret formulas or trusted authorities. It’s just math. Your key is secure simply because the keyspace is unimaginably massive.

Quantum computers? Sure, they might shake some aspects of cryptography in the future, but even then, 256-bit elliptic curve math is far from being trivial to break.

So relax. Flip your coins, roll your dice, generate that key offline. The universe has got your back… mathematically speaking.

Bitcoin isn’t magic. It’s just insanely big numbers. And that’s beautiful. BTC

[Charles-Tim]

Bitcoin is having 128 bits of security.

Some things about bitcoin like the 24 word seed phrases have 256 bits but the bitcoin private keys have security of 128 bits. Anything that can break 128 bits like the so called advanced quantum computers if possible, will be able to derive private key from public key.

Bitcoin’s Public-Key Security Level

[krishnaverma]

When I talk to my tech friends and other peers about crypto, bitcoin in specific. They always have a follow up question,
"Can it be hacked?", "What if someone guess your seed phrase", and many more questions.

So with my understanding in tech, I'll be sharing you and answering those question on how people get nervous about keeping their Bitcoin keys safe? Let me put your mind at ease with some perspective: Bitcoin private keys are 256-bit numbers, which is insanely large. Like… mind-blowingly large.

Here’s the math:

• A 256-bit key has 2^256 possible combinations.
• That’s roughly:

167,462,930,187,115,893,723,089,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936 (idk I just type random number )

But the point is that’s more than the number of you can imagine, it also more than the atoms in the observable universe

If you're still not convinced by that, Let’s put this in perspective with some thought experiments:

• 1. All GPUs on Earth brute-forcing keys:

             Even if every GPU on the planet worked non-stop generating trillions of keys per second, it would take longer than the age of the universe to try even a fraction of all possible keys.

• 2. Hypothetical perfect computers:

             Even a machine that could try 10^50 keys per second (faster than physics allows) would be hopelessly short.

• 3. Finding your key randomly:

             It’s like dropping a single grain of sand on Earth and then trying to pick that exact grain blindfolded. Only… Earth-sized sand piles multiplied by the number of atoms in the observable universe.



This is why Bitcoin security doesn’t depend on secret formulas or trusted authorities. It’s just math. Your key is secure simply because the keyspace is unimaginably massive.

Quantum computers? Sure, they might shake some aspects of cryptography in the future, but even then, 256-bit elliptic curve math is far from being trivial to break.

So relax. Flip your coins, roll your dice, generate that key offline. The universe has got your back… mathematically speaking.

Bitcoin isn’t magic. It’s just insanely big numbers. And that’s beautiful. BTC

I have nothing to worry. Even if if every GPU on Earth worked together to brute-force my seed, the electricity bill alone would liquidate three countries before they even reach the second word.

[hmbdofficial]

When I talk to my tech friends and other peers about crypto, bitcoin in specific. They always have a follow up question,
"Can it be hacked?", "What if someone guess your seed phrase", and many more questions.

So with my understanding in tech, I'll be sharing you and answering those question on how people get nervous about keeping their Bitcoin keys safe? Let me put your mind at ease with some perspective: Bitcoin private keys are 256-bit numbers, which is insanely large. Like… mind-blowingly large.

Here’s the math:

• A 256-bit key has 2^256 possible combinations.
• That’s roughly:

167,462,930,187,115,893,723,089,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936 (idk I just type random number )

But the point is that’s more than the number of you can imagine, it also more than the atoms in the observable universe

If you're still not convinced by that, Let’s put this in perspective with some thought experiments:

• 1. All GPUs on Earth brute-forcing keys:

             Even if every GPU on the planet worked non-stop generating trillions of keys per second, it would take longer than the age of the universe to try even a fraction of all possible keys.

• 2. Hypothetical perfect computers:

             Even a machine that could try 10^50 keys per second (faster than physics allows) would be hopelessly short.

• 3. Finding your key randomly:

             It’s like dropping a single grain of sand on Earth and then trying to pick that exact grain blindfolded. Only… Earth-sized sand piles multiplied by the number of atoms in the observable universe.



This is why Bitcoin security doesn’t depend on secret formulas or trusted authorities. It’s just math. Your key is secure simply because the keyspace is unimaginably massive.

Quantum computers? Sure, they might shake some aspects of cryptography in the future, but even then, 256-bit elliptic curve math is far from being trivial to break.

So relax. Flip your coins, roll your dice, generate that key offline. The universe has got your back… mathematically speaking.

Bitcoin isn’t magic. It’s just insanely big numbers. And that’s beautiful. BTC

Talking about bitcoin security I consider the encryption as one of the safest because of the SHA 256 used to generate the private key. that is a very large number of that is being produced just for your alone and that cannot be even guessed or rather try to walk back because the elliptical curve multiplication that was done to get the hash would be really difficult or rather impossible to walk back that make it safe.

Quantum computers that are claim that it might break the encryption done on the bitcoin program is just a speculation for now. nobody knows how effective it might be All I knw is that there will be measures put in place if that happens.

[OsaiEmma]

Unless Bitcoin security evolves, at some point in the future, it will be possible, now we already have the rumored quantum computers and trust me, this isn't the end of tech, so let's watch out

[fikrett]

I have nothing to worry. Even if if every GPU on Earth worked together to brute-force my seed, the electricity bill alone would liquidate three countries before they even reach the second word.

Yep, and there would be a need in around 10 to the 20th power and even more years of full coverage to get your seed cracked, provided that not a single word is known..

[macson]

The most likely threat to break Bitcoin's encryption is a quantum computer capable of breaking the cryptographic algorithm currently used to secure Bitcoin. However, this will take much longer to become a realistic threat because quantum computing technology is still in its early stages, and it could take decades to break Bitcoin's cryptography. Even before quantum computers reach that level, bitcoin developers will undoubtedly be preparing an upgrade to a quantum-resistant algorithm. So this shouldn't be a major concern.