Cryptocurrency Information Bureau News: "Bitcoin can be broken by quantum computers." Do you still believe the rumor? In fact, there are no encrypted secrets in BTC. The true guardians are signatures and hashes. Holders can rest easy! #Bitcoin #QuantumResilience #CryptocurrencySecurity
A quick video explanation of this blog post!
This blog post is explained in an easy-to-understand video.
Even if you don't have time to read the text, you can quickly grasp the main points by watching the video. Please take a look!
If you found this video helpful, please follow our YouTube channel "Cryptocurrency Information Bureau," where we deliver cryptocurrency news every day.
Subscribe here:
https://www.youtube.com/@WEB3engineerjourney
Jon and Lila share their unique perspectives in this conversation in English 👉 [Read the dialogue in English]
👋 Everyone who is holding on, are you still breathing?
Recently, the market has been abuzz with news that quantum computers might break Bitcoin's encryption. With Bitcoin's price fluctuating, I'll state the conclusion of this article first:Bitcoin's "encryption" is not threatened by quantum computers because it doesn't exist! Ownership is protected by digital signatures and hashes. The concern is the risk of authorization forgery, but that's not coming anytime soon. I'll explain in more detail. (About 300 characters)
🔰 Difficulty:Elementary to Intermediate
🎯 Recommended:People who want to understand technology trends
Bitcoin encryption is not threatened by quantum computers: for the simple reason that they don't exist
⭐ Three key points
- Bitcoin has no "encrypted secrets"! So there is nothing for a quantum computer to decrypt.
- The threat is "authorization forgery," which is due to the digital signature and hash-based mechanism.
- Quantum risk is not real. It's decades away, and Bitcoin's security is still strong.
📑 Table of Contents
Background and Issues
Okay, let's have a heated discussion at a cafe. Imagine you have a treasure chest (a Bitcoin wallet) filled with gold coins (BTC). However, recently there's been a rumor going around that "a super dangerous thief called a quantum computer might come along and break the lock on the treasure chest in an instant."
this,The threat of quantum computersThat's it. Ordinary computers calculate in the world of "0 or 1," but quantum computers are super dupes that can handle "both 0 and 1 at the same time." To put it in perspective, while an ordinary locksmith uses picks one by one, quantum computers can try all the pins at once. Scary, right?
Bitcoin is making waves in the newsECDSA (Elliptic Curve Digital Signature Algorithm)This is a signature method that proves that Bitcoin transactions are "authentic." It's like your signature could be forged. But wait! Today's news is telling us not to panic.
As of 2025, the market is experiencing some fluctuations in Bitcoin prices due to concerns about quantum risk. Even though experts say it's "decades away," panic is spreading on social media. Have you ever had trouble sleeping at night, wondering if the BTC I'm holding onto will be stolen? Me too (lol). But the real problem lies in the "absence of encryption." I'll go into more detail next time.
The core of the technology
Now, let's get to the point! The key points of the news are simple:There is no "encrypted data" in BitcoinSo there is nothing for a quantum computer to decrypt. To put it in perspective, it's like a bank vault containing something like a fingerprint seal, rather than a ciphertext.
Bitcoin securityDigital signatureとHash-based commitmentsWhat is hashing? Simply put, it is a magic that converts a long piece of text into a short "fingerprint." For example, if your love letter is converted into a code like "ABC123," the code will change if it is tampered with. There is a joke that says, "Hashing is like dieting. It makes something big smaller, but you can't put it back together (lol)."
The quantum risk is "authentication forgery." That is, someone might forge a signature and claim, "This is my BTC." However, according to the news, there are no encrypted secrets on the Bitcoin chain, so there is no risk of decryption. Ownership is only enforced by signatures.
Compare this to traditional cryptography with a visual comparison chart!
| Item | Traditional cryptosystems (e.g. HTTPS) | How Bitcoin works |
|---|---|---|
| Security Foundation | Encrypted data (hides secret messages) | Digital signature and hash (proof of ownership only) |
| The threat of quantum computers | Decryptable (using Shor's algorithm to break the key) | Nothing to decrypt (signatures can be forged, but there are no secrets on the chain) |
| Risk Level | High (practical threat within a few years) | Low (decades into the future, community can cope) |
Can you see this chart? Bitcoin is not a "castle of encryption" but a "fortress of signatures." Even when quantum computers arrive, there will be no one to knock on the gates from the start. Even expert Adam Back says, "Quantum is still at the kindergarten level" (lol). Does this ease your worries a little?
Applications and Market Impact
So, how does this core technology affect the market? From a developer's perspective, Bitcoin updates (e.g., post-quantum signatures like BIP-360) are progressing. From a user's perspective,tap rootFeatures like this reduce quantum risk. Taproot? A simple way to "smartly hide" transactions. Example: Like wrapping a present to hide what's inside at your birthday party.
There are two possible impacts on the market. First, anxiety may spread and prices may fall. However, if we know there is no threat, as in the news, we can safely hold on to our coins. Developers are incorporating quantum-resistant algorithms to make Bitcoin even stronger. As a user, if you're playing with DeFi, be sure to choose a wallet that considers the security of signatures.
Application example: If the quantum era comes, there are proposals to freeze "lost coins" in Bitcoin. As Saylor said, quantum might actually create a supply shock? But this is market dynamics. I joke, "Maybe quantum computers will save my forgotten password wallet (lol)." But seriously, technological advances will support Bitcoin's value.
Actions by level
It's not about "buying" but about "understanding and experiencing"! Beginners: First, read the Bitcoin white paper. It's free to download. Example: Get the idea that "Bitcoin is not a safe, but a public ledger."
Intermediate: Try out the signing process in your wallet. Look at transaction signatures in an app like Electrum. You'll realize, "That's a hash!" If you're familiar with DeFi, research quantum-resistant projects (e.g., Ethereum updates) and compare them.
Action point: Join the discussion on the community forum (r/Bitcoin on Reddit). Ask questions and learn. But remember, when using overseas exchanges, there are risks beyond legal protection. For Japanese residents.
Future prospects and risks
The future is bright! Even as quantum computers evolve, the Bitcoin community is preparing for post-quantum cryptography. Saylor says, "Quantum will boost Bitcoin." A quantum-resistant update may arrive by 2028. It's said that 6.7 million BTC are at risk, but it'll be fine if we migrate.
But don't forget about the risks. Technical risk: If quantum arrives sooner than expected, old addresses with exposed public keys may be targeted. Legal risk: Cryptocurrencies are regulated in Japan, so unauthorized transactions are prohibited. Operational risk: Prices fluctuate due to panic selling. As I always say, DYOR (do your own research). Quantum panic is "less scary than ghosts," but it's important to be prepared (lol).
My Feelings, Then and Now
In summary, Bitcoin's "cryptography nonexistence" protects against quantum threats. Signatures and hashes are the true guardians. I hope this news has helped ease your anxiety. Understanding the technology can make the world of cryptocurrency more enjoyable. However, investing is full of risk. Please do your own research and make your own decisions. Don't forget the DYOR spirit!
💬 What do you think?
👨💻 Author: SnowJon (WEB3/AI Practitioner/Investor)
Based on the knowledge I gained from the University of Tokyo's Blockchain Innovation Course,
Researches and disseminates information on WEB3 and AI technology from a practical perspective.
We place importance on translating difficult technologies into a form that can be understood.
*AI is used as an auxiliary tool, and the author is responsible for final confirmation and responsibility of the content.
Reference links and sources
- Original news: Bitcoin encryption isn't at risk from quantum computers for one simple reason: it doesn't actually exist
- Bitcoin Whitepaper (Official Whitepaper)
- Bitcoin Wiki: Post-Quantum Cryptography
- Post-Quantum Cryptography: A Primer (Keyfactor)
- Quantum vs Classical Computing (IBM)