Introducing The Bitcoin Escape Room - An Educational Community Event[$100 Prize]

[GazetaBitcoin]

Hey BigTarget, please be aware that AOBT started working on translating your thread. It should receive at least 10 translations. So far, 2 translations have been made:

- Spanish translation, made by Porf
- Romanian translation, made by myself.

I hope this is good news

[doggywin]

Room 3

Answer 1

If Bitcoin isn't stored inside a wallet, then what exactly does a Bitcoin wallet store?
Explain the role of a wallet in your own words.

A wallet doesn't hold Bitcoin, same way a banking app doesn't hold cash. The coins exist as entries on the bitcoin blockchain. What the wallet actually stores is your private keys which is the secret key that lets you sign and move the coins. So it's like a keychain rather than a purse.

Answer 2

Three objects appear on the pedestal. A Private Key,  A Public Key, A Bitcoin Address

Explain:
   •   What each one is.

   •   How they are related.

   •   Why confusing them could lead to losing your Bitcoin.

Imagine you're explaining it to someone who has never used Bitcoin before.

Private key is a secret random number. Whoever has it owns the coins and can send it.
Public key is made from the private key with one way math, people use it to check your signatures.
Address is a hash or fingerprint of the public key, that's what you hand out to get paid.

From private key software makes public key and from public key software makes bitcoin address.

The danger is they all look like gibberish to a beginner. Sharing your address is fine, that's its job. Paste your private key somewhere thinking it's your address, Bitcoins will be stolen. The opposite mistake also exist- if you save the address instead of the private key, and the private key is lost, the money just sits there forever.

Answer 3

What are these words?
Answer the following:
   1.   What is this list called?

   2.   Why is it important?

   3.   Can these words recreate a wallet?

   4.   Should you ever share them with another person? Why or why not?


These are first 12 words of the BIP39 dictionary. A seed phrase is 12/24 words picked randomly from the full list of 2048.

It is called recovery phrase / seed phrase
It's your private key in word form. Every private key and address in your wallet is derived from it.
The words can recreate the wallet. Type it into any compatible wallet and everything comes back
Never share it. Whoever has the words has the coins, they can restore your wallet on their phone and send everything to themselves.

Answer 4

A note is pinned to one of the safes.
It reads:
"I lost my phone, but luckily I took a screenshot of my recovery phrase and saved it to my cloud drive."
The safe immediately flashes ACCESS DENIED.
Question:
Identify every security mistake made in this sentence.
How could the person have protected their Bitcoin more safely?

Screenshots aren't safe. Malware scans photo galleries looking for grids of 12 words
The cloud drive means it now lives on someone else's server (which could  be hacked) behind an email and password, so 256-bit security got downgraded to password level security
Screenshots also sync themselves into backups and trash folders, so the phrase probably exists in more places than the owner even knows.

The correct way is to write it by hand on paper (or metal), keep it offline somewhere safe, maybe two places, and do one test restore so you know it actually works. For serious money, hardware wallet.

Final Challenge Answer

A friend has just bought their first Bitcoin.
They ask you:
"What's the single most important thing I should never do if I want to keep my Bitcoin safe?"
Write your answer as if you're giving real advice.
Support it with reasoning.

I'd tell the friend never type or share your recovery phrase anywhere except your own wallet. Not to "support", not on a site that wants to "verify" your wallet, not in a photo. Nowhere, ever.
There's no bank behind you anymore. Nobody can freeze your money, but it also means no fraud department, no password reset. Owning bitcoin is just knowing a secret, and basically every beginner horror story is that secret leaking somehow: fake support agents, phishing sites, screenshots. And if your coins sit on an exchange you hold zero keys anyway, just an IOU. Not your keys, not your coins.

Answer to Bonus

James Howells. In 2013 he cleaned out his office and threw away the wrong hard drive holding keys to about 8,000 BTC he mined in 2009. It's been buried in a landfill. He spent over a decade trying to get permission to dig it up, even offered to buy the whole landfill, and a court killed the case in 2025.

Lesson: Always keep a backup. Know exactly which device or where your keys live on, back them up before you clean anything.

[thesebassv]

These are my answers for room 2:

Answer 1


SHA-256 means, Secure Hash Algorithm 256-bit, this last part, 256-bit means that everything that comes out from the SHA-256 function will always be 256 bits. It doesn’t matter the size of the thing you want to hash, it will always give you a 256 bits hash which typically is a 64 character hexadecimal string. It doesn’t matter if it is a word, a book, or whatever the size of the thing you want to hash, the result will always be 256 bits.

Now, why is this SHA-256 important for Bitcoin? Because every single change in the information before hashing changes the hash. Let’s say you want to hash this “roses are red” it gives you 64 characters “134af2…bc45” but if you change something in that line before hashing, for example “roses, are red”, it will give you a completely different hash with 64 different characters. This is so important for transactions integrity, because it’s not the same to say person A sends 10 BTC to person B, than person A sends 0.1 BTC to person B, both transactions are between the same addresses but they don’t have the same amount which will give 2 different hashes. And if one miner receives a hash that is different from the one of the rest of the network it will alert them.

That’s one way where Bitcoin uses SHA-256, the transaction IDs, the other place is in the Merkle Trees that are transactions grouped and hashed together. This makes it more efficient since you don’t have to download the entire block to know which transactions are inside a block.


Answer 2

ECDSA means Elliptic Curve Digital Signature Algorithm, which is a cryptographic algorithm used to securely create and verify digital signatures. To make it simple, this is the thing that creates the 2 keys you have in your wallet, the private key (the one only you know) and the public key (the one that everyone knows).

Now, why does Bitcoin use digital signatures? The most important reason is for security. Your signature is tied to each transaction you make, and each address you have. So, let’s say someone tries to alter a transaction you made, let’s say you send 1 BTC and someone wants to change it to 10 BTC, they won’t be able to do that because just changing the BTC amount in the transaction creates a different transaction that won’t match with your key and makes the signature invalid.

So, although all transactions, addresses, and balances are public, no one can move BTC from one address to another without having the private key. That’s why signatures are so important for the chain, since without them anyone could get your BTC, there wouldn’t bet be proof of ownership or authentication.

Answer 3

This

Code:

1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa

is a public address, but it’s not just any address, it is the first Bitcoin address created on January 3, 2009, the one that holds 50 BTC.

Now, remember that we talked about SHA-256, your address is a hashed version of your public key. Your uncompressed public key has 130 characters and it is reduced for your address to 26 - 62 characters long. This helps to make your address more readable, it also helps to make it easier to find errors in the addresses, and of course for security since your public key is only exposed once you make a transaction

Answer 4

Remember that we talked about Merkle trees when we talked about SHA-256, the diagram is exactly that, a representation of a Merkle tree. So, the tree is built from the bottom, you have the root node, then the intermediate node, and at the end the leaf nodes. The root is the one that secures the entire tree, this means that if something in the tree changes it will give you a different root, that way you can verify the data.

Now, why is the tree useful? Because it securely summarizes entire blocks of data, and allows users to quickly and efficiently verify whether something is inside a massive dataset without needing to download or process all the data.

So, taking this to Bitcoin, it helps with transaction verification because it summarizes thousands of transactions into a single hash. So, for example, the entire chain is around 755 GB to 861 GB, imagine having to download all that just to confirm every single transaction. The tree makes it easier since it groups a lot of transactions and you just have to confirm if the root is the same.


Answer for Final Challenge

I think that removing ECDSA would be the worst. Because if you can’t proof that you own your money anyone could take it, it is not safe at all, and everyone would be stealing from everyone which would make the chain collapse. Well, I doubt anyone would ever want to participate in something that won’t secure their assets so maybe the chain wouldn’t even be launched without having ECDSA.

[GazetaBitcoin]

Hey BigTarget, please be aware that AOBT made 2 more translations for your thread:

- Russian translation, made by zasad@
- Filipino translation, made by Peanutswar.

[BigTarget]

Hey BigTarget, please be aware that AOBT started working on translating your thread. It should receive at least 10 translations. So far, 2 translations have been made:

- Spanish translation, made by Porf
- Romanian translation, made by myself.

I hope this is good news

Hey BigTarget, please be aware that AOBT made 2 more translations for your thread:

- Russian translation, made by zasad@
- Filipino translation, made by Peanutswar.

That's definitely a good news and much appreciated.
I am sure local users might find this thread useful to understand and learn about bitcoin's history.
Thanks for keeping me posted.


Room 4 is now live.
Leaderboard has been updated.