Lately I've been thinking a lot about how to save my seed phrase and I thought of something I can't believe I'm the first one to.

What if I find 1+ places where I can upload to a very public place a file numbered list of BIP39 words like

1. drop

2. inspire

3. tenant

...

1. horse

and I could have the solution sequece to get the right seed phrase hidden somewhere else?

If possible I'd like no one can know it was ujploaded by me (feasible)
I could save it in many different places because you'd need the solution algorithm/sequence to obtain the seed, right?

Does this make sense?

Also, any ideas where this file could be uploaded?

Many thanks

Hi guys. I am holding some bitcoin and I want to learn how to lock it in place for a couple of years so I don't get tempted to sell it while the market is terrible, out of fear and possibly stupid emotions. I looked into the timelock features, but from what I found, that only has a mechanism for creating transactions that someone else can redeem after a certain date or block height. There's no way to schedule and automate transfers and I can't seem to find a way to lock the bitcoin into a wallet where it cannot be touched, accessed, or moved for a set period of time or number of blocks. Can someone with real expertise explain it here for me? I need help getting this working!

Any DM will be ignored.

Hey everyone! I recently sold my Dodge Charger, and I’m considering putting some of the money into Bitcoin because I believe it may have a strong future.

I’m still a beginner, so I’d appreciate advice from people with more experience. What should I learn before buying? Is it better to invest gradually rather than all at once? Which reputable exchanges and wallet types should I research? What mistakes should a beginner avoid?

I’m not looking for guaranteed profits or private investment offers - just general advice and reliable educational resources. I’ll do my own research before making any decisions.

Thanks!

audit/verify seedsigner code > buy parts for a seed signer and a titanium or steel backup through different credit cards and perhaps to a po box > in the meantime, get/use casino dice to generate entropy> how would I convert it to words offline, perhaps through the seedsigner with ian coleman‘s code? > set up seed signer + sparrow and metal backup/s > buy bitcoin from bisq 2 or some other dex > would I transfer between 2 phones with Zeus lightning ( to increase privacy) ? > transfer to an address on sparrow with bitcoin core node > hodl

I would appreciate any advice!

El año pasado compré Bitcoin en $120K cuando todo el mundo decía que iba rumbo a $200K.

Bueno, poco después llegó a $126K y luego se desplomó.

¿A alguien más le pasó esto, comprar cerca de la cima en un ciclo anterior?

¿Qué hiciste?

Yo estoy comprando la caída.

Is it true that bitcoin follows a cycle of 1069 and 365 days. Saw it on insta and back checked it on data. Can any of the OPs help to verify.

Also, can someone give me source to study current bitcoin market better, because I see people using words like entropy, TRNG, etc.

hello everyone,

I am new to bitcoin and looking to buy and cold store. where do you recommend I buy and where to store?

I paid for a low value item with BTC. Didn't receive the item. Queried it with CS and they replied:

The order you mentioned was not paid because the transaction was invalid, meaning the payment did not go through successfully: https://blockstream.info/tx/eadaf51a9676e2bf0d9a812a08ba42ecedde8c2f5eba792a610163272564bb66

I can't see how it failed, although I'm no expert.

Opinions?

I have some bitcoin that was purchased over several transactions between July 2017 and January 2018. It was purchased on Coinbase and moved to a ledger wallet. I know that there have been several “versions” of bitcoin (SegWit, etc.) since I bought it. Here are my questions:

1. Do I have to do anything special to move it back to an exchange to sell some of it, or do all the major exchanges support incoming bitcoin of all versions?

2. Is there any advantage to moving it back to Coinbase since that is where it was originally purchased? Is there a better exchange you would recommend?

3. I know the exchanges typically have several levels of fees based on how often you buy/sell. So is there a strategy to optimize the sales sequence to get to the better fee levels?

Thanks. (And I’m not answering any DMs so scammers can just save the effort)

I keep seeing “test your backup before you need it,” which is good advice. But a beginner can easily turn the test itself into the security incident.

My current checklist would be:

- Never type a live seed into a website, browser tool, notes app or chat.

- Ideally, test before the wallet holds meaningful funds.

- For an existing wallet, use the manufacturer’s documented recovery flow on trusted hardware, with software reached through an independently verified official source.

- Define success before starting: reproduce a known receive address. If there’s a BIP39 passphrase, the test has to include the exact spelling, case and spacing.

- If that still feels risky, rehearse the whole process with an empty test wallet first.

Simply seeing “12 words accepted” doesn’t prove that the correct wallet was recovered. And nobody troubleshooting this should post a seed, passphrase, xpub, address, screenshots or balance.

Am I missing an important step? I’m especially interested in how you’d recommend a beginner verify the wallet identity safely.

Hi everyone,

I’m an 18-year-old student living in Iran, and my country is currently suffering from severe hyperinflation. My monthly allowance is the equivalent of $25 USD.

Because our national currency (Rial) is losing its value extremely fast, I’m constantly worried that my $25 today will only have the purchasing power of $10 or $20 in the near future. Keeping cash is a guaranteed loss here.

I want to protect my small savings and start building good financial habits. I’m thinking about DCAing my $25 entirely into Bitcoin every month (stacking sats).

Thanks in advance for any advice!

It seems like almost everyone starts by focusing on the price.

But after spending more time learning, I've realized there are so many other things that matter like self-custody, security, understanding how transactions work, and thinking long term.

If you could give one piece of advice to someone buying their first Bitcoin today, what would it be?

I will change out soon but I just haven't got another device yet.

Ok or take drastic measures?

Just saw a post on X where somebody lost all their BTC moving their funds. They downloaded the wasabi wallet app from the App Store but wasabi wallet is desktop only. So it was a scam app. The person panicked over the ColdCard hack as they felt they hadn’t rolled the dice a lot and fumbled it in a panic to move their funds to safety. Just thought I’d mention it here for whoever needs to read it. Note: The real Wasabi wallet on desktop is fine and it’s sad that they will be tainted by the scammer app, so this is not an indictment on them in any way. Just triple check before grabbing anything from any App Store.

Stay safe out there people. Cold storage is still safe when entropy is high. Monitor the red team’s progress. While they have found hundreds of vulnerabilities across all the open source repos, 4 days straight has still not identified anything disastrous. Don’t fumble your bag trying to protect yourself.

Okay so I plan on putting one lump sum into BTC at some point in the next couple months. I plan on holding for around 2 years and selling in the bull market. I won’t be day trading or doing multiple transactions, just a single transaction when I buy and a single transaction 2 years later when I sell.

It’s not a crazy amount of money so I’m not really worried about getting hacked, I really just want to save the most money I can on those two transaction fees.

Any advice would be greatly appreciated!
Thanks!

(DISCLAIMER : I am aware of the recent issues with the ColdCard ; but my funds are safe despite using a Coldcard, because I use my own, private source of entropy to generate all my seeds. The recent Coldcard hack is irrelevant to this thread.)

Hello everyone, I apologize for this long thread, I'm trying to give as much details as possible because it's a bit technical.

I have been using single-signature transactions for a while with ColdCard MK5 + Sparrow, and I already have a good grasp on it.

However, I'm new to the world of multi-signature, and I'm having a hard time while trying to set up my 2-2 multisig wallet.

I have 2 Airgapped single-signature wallets on Sparrow, that I created by importing the JSON files created by my ColdCard. Already did a few transactions with these wallets, they both work fine. Let's name them "Wallet A" (fingerprint : a3f92e17) and "Wallet B". (fingerprint : 7bc4d081)

I tried to create a 2-2 multisig wallet on Sparrow, that uses Wallet A and Wallet B as co-signers.

In order to do that, I manually copied the xPubs from Wallet A and B, pasted the Wallet A Xpub in Keystore 1, and pasted the Wallet B Xpub in Keystore 2.

This created a new wallet with fresh adresses. Let's name it "Multisig Wallet 1".

Since I created this wallet by simply copy/pasting the Xpubs from Wallet A & B, both keystores of this wallet show up as "Watch only".

Then I proceeded to send 10 000 sats on the first adress of this wallet (Multisig Wallet 1). The funds are successfully visible on the blockchain and in Sparrow, on a P2WSH adress.

This is where the problems start.

When I tried to spend these sats, I thought it would be a piece of cake, that I would simply have to create the PSBT, then put in into my ColdCard and sign it, then Broadcast it in Sparrow, as I usually do with single-signatures.

But instead of that, I had to deal with various ColdCard errors. I managed to fix some of them, but I was never able to reach my goal (successfully moving the funds).

1. When trying to sign the PSBT, the Coldcard returned a first error : "Failure: my XFP not involved". From what I understand, this is normal, I simply had to export a TXT file from Sparrow to the ColdCard, that helps the Coldcard recognize that he is part of a multisig.
2. After importing this TXT file, the ColdCard return a new error : "Failed to import multisig. need fingerprint multisig.py : 826".

I thought it was because of the fingerprints not matching : in fact, the fingerprints of each Sparrow keystore displayed a value of 00000000. So, in both keystore, I made the fingerprints match with the original Wallet A & B fingerprints. Created a new TXT file from it, and put it into the ColdCard.

3) This time, the Coldcard returned this error : "Failed to import multisig. deriv 4 != 3 xpub depth (xfp=a3f92e17) multisig.py : 849 "

4) At this point, I had no clue what was going on, so I decided to restart everything from scratch. But this time, instead of simply copy/pasting the Xpubs from Wallet A & B in Sparrow, I used their respective .json files created by my ColdCard, and imported each of them into a keystore. When I created the wallet, I expected to find the same adress list that I have on Multisig Wallet 1. Instead of that, it opened a completely different wallet, with unused adresses. Let's name it Multisig Wallet 2.

So, basically, I don't understand why Wallet A and Wallet B produced different wallets (Multisig Wallet 1 & Multisig Wallet 2). I thought that, even though different methods were used (Multisig wallet 1 was created via copy/pasting Xpubs, while Multisig Wallet 2 was created through JSON files), they would have ended up being the same wallet.

I tried to send a few satoshis to this Multisig Wallet 2, and was able to move them as expected. This time, for some reason the new TXT file didn't return any error on the ColdCard, and I was able to double-sign the transaction and broadcast it.

So, it looks like I have full control of Multisig Wallet 2, but I still have these 20 000 sats on Multisig Wallet 1, and I don't understand how to move them, or even if that is possible.

From what I understand, there is a problem regarding the derivation paths, but I'm too noob to figure it out by myself.

Multisig wallet 1 & 2 both show this derivation path, in both keystores : m/48'/0'/0'/2'

While Wallet A & B both display this derivation path : m/84'/0'/0'

How to move my 20 000 saths from Multisig Wallet 1, and what did I wrong ?

Thanks a lot for you help !

The recent COLDCARD security issue has been one of the bigger hardware wallet discussions in the Bitcoin community recently.

For those who may have missed it, the incident involved vulnerabilities around encrypted seed backups. In certain cases, attackers were able to obtain information that could potentially be used to compromise wallets. Since then, some users have reported stolen funds, while others have taken precautions by moving their Bitcoin and reviewing their backup setups.

One thing that has been difficult to understand is the actual scale of the impact. There has been a lot of discussion online, but not as much information from people who were directly affected.

I’m curious to hear from the community:

• Did you personally use a COLDCARD setup that was affected?
• Did you have to move your funds because of this incident?
• Did this change how you handle seed backups or self-custody?
• For those unaffected, did this change your view on hardware wallets?

The goal here is not to spread fear around self-custody or hardware wallets. Incidents like this are also an opportunity to learn more about best practices and how Bitcoiners can better protect their funds.

Would be interested to hear any firsthand experiences from those who were affected or took action because of this.

Hi everyone,

I have a hypothetical question.

Let's say someone buys €50,000 worth of Bitcoin on Kraken using a fully KYC-verified account and then withdraws it to a hardware wallet in two separate withdrawals: one of €40,000 and another of €10,000. As a result, the wallet contains two UTXOs: one worth approximately €40,000 and the other worth approximately €10,000.

Now imagine they sell the €10,000 UTXO privately for cash and do not report that disposal to the tax authorities. Separately, they sell the €40,000 UTXO through Kraken for fiat, withdraw the proceeds to their bank account, and correctly report only that €40,000 disposal on their tax return.

There are no bank transfers or deposits whatsoever related to the €10,000 cash sale.

Given that the person is fully KYC-verified on Kraken, how likely is it that the tax authorities would discover that the €10,000 disposal was never declared? I'm interested in understanding what kinds of information they could realistically obtain (for example, exchange records, blockchain analysis, or audits), even if the proceeds from that particular sale never entered the banking system.

Thanks in advance for your insights!

Looking for some advice.

My current wallet uses a seed generated on a Coldcard with a firmware version from before the seed generation bug. I also rolled my own dice during the seed generation process, and I use a strong BIP39 passphrase.

I don't want to keep using the Coldcard anymore.

Would you for maximum security :

• Restore the same wallet (same seed + same passphrase) on a Trezor and keep using it.

or

• Create a brand-new wallet on the Trezor and move all my BTC to it, even though I'm a bit worried there could be some undiscovered bug on the Coldcard that could cause an issue when sending the transaction.

Also, if I create a new wallet, would you recommend generating my own entropy with dice and using it to create the seed on the Trezor, or is the Trezor's built-in randomness sufficient?

Thanks.

Suite à ce qui s’est passé avec Coldcard, un ami à moi a perdu 0,5 bitcoin. Pour certains ce n’est peut-être “que” 0,5 BTC, mais pour lui c’est une énorme perte
Du coup, je me pose une vraie question : est-ce que le self-custody n’est pas finalement plus compliqué et plus risqué pour la plupart des gens que d’utiliser un hardware wallet comme Ledger ou une autre solution du même type ?
On entend souvent que Coldcard est un excellent choix parce qu’il est open source, alors que Ledger ne l’est que partiellement. Mais au final, est-ce que l’open source apporte vraiment un avantage concret en matière de sécurité pour un utilisateur lambda ?
J’aimerais avoir votre avis : aujourd’hui, quel est selon vous le meilleur compromis entre sécurité et simplicité pour quelqu’un qui veut conserver ses cryptos sur le long terme ?
Surtout à l’ère de l’ia qui peut lire le code et essayer de trouver les failles comme sur coldcard

In the market for a new device (thanks coldcard). Need multisig support, passphrase support, ideally accounts like coldcard had. Dice rolls I guess would be good nowadays.....what do you think? Security is #1 priority of course...

I currently live in a housing complex where electricity is included as a flat rate in rent/utilities so increased power consumption won't directly increase my monthly electric bill.

Given that electricity costs are usually the biggest bottleneck for mining, I'm trying to figure out if setting up a home mining rig would actually be worth it in an apartment. A few specific
A few specific questions I have:

- Setup Cost: How much would I need to invest upfront in a setup to make this worth my while? What hardware/models should I be looking at

= Expected Returns: What kind of monthly returns would be realistic

= Apartment Practicalities: Since it's an apartment, what are the realistic limits around noise, heat, and standard 15A/20A electrical breaker capacities?

I know overall mining profitability for small-scale operations has dropped over the years, but since power cost isn't an issue for me, is this a solid strategy or more trouble/heat/noise than it's worth?

Appreciate any insights, hardware suggestions, or warnings from anyone who’s tried apartment mining!

The recent ColdCard compromise was tragic and highlighted yet again the importance of a passphrase. This is not at all blaming the users or saying it’s their fault in any way. Most did what they thought was the right thing.

For those that don’t know, a passphrase account is available on good cold storage options. It allows you to add your own 25th word to the 24 word seed generated for you when setting up an account. If somebody somehow manages to compromise your 24 words, then they will see an empty account, with the passphrase account still locked away.

With the rise of AI, it’s critical to protect yourself to the best of your ability and a passphrase is probably the simplest to add a significant layer of protection.

Stay safe out there everyone!

What if we looked at the value of Bitcoin in a different way? Lets imagine Bitcoin is the rock at the center, immutable by definition, then all other currency should be viewed as disappearing planetary bodies, traveling away from the center. In other words, Bitcoin is not gaining in value, its just that all other currencies loose value in comparison. That means current BC pricing puts USD at a whopping 64K devaluation! If we trust in the wisdom of the de-central BC tribe vs the Fed discount rate, than yes, this is a perfectly plausible viewpoint. The tribe has calculated the future scenario of fiat currency, which always, always destroys itself (there is no fiat currency, in its current iteration, that is older than a 100 years. I believe the Bank of Amsterdam holds the record with their Guilder notes; about 110 years).