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Showing 20 of 20 results by globtroter
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Board Bitcoin Discussion
Topic OP
Can you spot 0.01 BTC in this image ?
by
globtroter
on 19/10/2020, 10:30:21 UTC
There's 1 million Non-KYC sats (0.01 BTC ) buried in this image waiting to be swept.

Retweet to receive a DM with instructions on where to look and start playing.

https://twitter.com/ColdbitWallet/status/1318116721983709185


Post
Topic
Board Collectibles
Topic OP
Coldbit Steel - Spiderweb
by
globtroter
on 29/07/2019, 10:52:27 UTC


Coldbit Steel Spiderweb is a durable solution for your Bitcoin seed backup.

Made of 4mm thick stainless steel plate, a 2mm thick stainless steel cover and 2 nickel binding posts.

It’s designed to withstand house fire, flood, electrical shock, extreme temperatures (up to 1200 C) and humidity (corrosion resistance).

Compatible with any 24 or 12 word seeds (BIP 39) and wallets (eg. Trezor, Ledger, Coldcard and any other BIP 39 wallet).

This is a limited edition featuring a Spider on a web.

Only 10 pieces were made, only 6 pieces are left.

Coldbit Steel Spiderweb now comes with 1x Coldbit Passphrase included in the price (for BIP39 passphrase backup).

IMPORTANT: Please don’t forget about ordering the stamp set and the hammer – they’re sold separately.

Spiderweb Limited Edition:

  • stores up to 24 words (each word up to 8 letters)
  • extra line that can store up to 16 letters for Wallet ID
  • 2 stainless steel plates – heat and corrosion resistant (AISI 304)
  • 4mm thick stamping plate and 2mm thick cover
  • 2 nickel binding posts (countersink hole on the back – the wallet lays flat on the table)
  • no loose parts
  • metal box
  • comes with 1x Coldbit Passphrase included in the price
  • additional steel testing plate to practice stamping and provide support while stamping

Post
Topic
Board Collectibles
Merits 1 from 1 user
Re: Coldbit Steel - Honeycomb
by
globtroter
on 24/07/2019, 11:14:23 UTC
⭐ Merited by TookDk (1)
Dice rolling might be exploitable in a casino (3 - 8 bits of entropy) but not in the context of a 128-256 bit entropy (or even 64 bits - eg 4-6 word diceware passphrase).
With Coldcard you can keep rolling if you're worried about the fairness of the dice, use different dice each time you roll and it'll keep generating new seed.

There is nothing that beat the warm fuzzy feeling; sitting with your tinfoil hat under a blanket generating a private key based on a 99 digit base6 number with a calibrated dice... only quantum based number can have higher entropy  Cheesy

cheers

Completely agree. I love my tinfoil hat and the feeling watching how dice rolls turn into seeds/passphrases Cheesy
Not many people share my enthusiasm though, they trust various HRNGs and TRNGs not knowing that the true entropy lies in their own hands Wink
Post
Topic
Board Collectibles
Re: Coldbit Steel - Honeycomb
by
globtroter
on 22/07/2019, 21:26:35 UTC
Great products you are selling.

Thanks Smiley

Question:
The dies you are selling, are they fair or just a toy?

They're not casino dice but it doesn't matter because we don't use them in casinos or for playing.

Here's a quick review of Chessex d20 dice (bear in mind they're not the same as d6).

The dice can be used for 2 things in the context of Bitcoin:

  • Generating entropy for the seed (eg. using Coldcard Wallet)
  • Generating a passphrase using a diceware list

I'm not too worried about the fairness of the dice in the context of Bitcoin.

Dice rolling might be exploitable in a casino (3 - 8 bits of entropy) but not in the context of a 128-256 bit entropy (or even 64 bits - eg 4-6 word diceware passphrase).
With Coldcard you can keep rolling if you're worried about the fairness of the dice, use different dice each time you roll and it'll keep generating new seed.
Post
Topic
Board Collectibles
Topic OP
Coldbit Steel - Honeycomb
by
globtroter
on 22/07/2019, 11:03:28 UTC


Coldbit Steel Honeycomb is a durable solution for your Bitcoin seed backup.

Made of 4mm thick stainless steel plate, a 2mm thick stainless steel cover and 2 nickel binding posts.

It’s designed to withstand house fire, flood, electrical shock, extreme temperatures (up to 1200 C) and humidity (corrosion resistance).

Compatible with any 24 or 12 word seeds (BIP 39) and wallets (eg. Trezor, Ledger, Coldcard and any other BIP 39 wallet).

This is a limited edition featuring Busy Bees in a Honeycomb.

Only 10 pieces were made, only 4 pieces are left.

Coldbit Steel Honeycomb now comes with 1x Coldbit Passphrase included in the price (for BIP39 passphrase backup).

IMPORTANT: Please don’t forget about ordering the stamp set and the hammer – they’re sold separately.

Honeycomb Limited Edition:

  • stores up to 24 words (each word up to 8 letters)
  • extra line that can store up to 16 letters for Wallet ID
  • 2 stainless steel plates – heat and corrosion resistant (AISI 304)
  • 4mm thick stamping plate and 2mm thick cover
  • 2 nickel binding posts (countersink hole on the back – the wallet lays flat on the table)
  • no loose parts
  • metal box
  • comes with 1x Coldbit Passphrase included in the price
  • additional steel testing plate to practice stamping and provide support while stamping

Post
Topic
Board Auctions
Re: Advertise on this forum - Round 273
by
globtroter
on 05/04/2019, 17:07:54 UTC
1 @ 0.04 for Coldbit Metal Wallet Product announcement from Sep 2018 here
Post
Topic
Board Project Development
Merits 3 from 3 users
Re: why don't we have campaigns using lightning network in the forum yet?
by
globtroter
on 08/01/2019, 10:45:16 UTC
⭐ Merited by LoyceV (1) ,Lucius (1) ,hugeblack (1)
Agreed, even I don't know how much I will need to open a channel and to ask a friend to do so. Let's give LN some more time. I'm sure these small things will go on automatic and then it will be easier to understand.

You don't have to know much to start using LN already. The easiest way (not the safest) is to use a custodial wallet.

For example: bluewallet.io (iOS and Android apps)

You top it up with a small amount of Bitcoin and can immediately send and receive lightning payments.
By default it uses a third party LND installation, meaning it's already capable of sending/receiving payments because it's well connected.

You can set it up to use your own LND hub instead.

There's also Bitcoin Lightning Wallet for Android which is quite good.

Give these apps a go (using small amounts of Bitcoin). That's how you get the ball rolling. It won't get rolling if everyone just sits there hoping for the thing to resolve itself on its own.

HTH
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 08/01/2019, 10:00:36 UTC
I'm happy to announce free shipping to EU countries for all orders above 50 EUR via DPD.

Q: What is Coldbit?
A: Coldbit is a metal backup of your Bitcoin/altcoin wallet seed. You can stamp your wallet seed words on Coldbit steel plates and store safely for very long periods of time.
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 03/01/2019, 16:39:24 UTC
To celebrate 10 years of Bitcoin we're giving away a 10% coupon "10yo".

It grants free shipping in the EU and applies to all the products (regular Coldbit Steel walletColdbit Honeybadger) and stamp sets/hammers

Valid until 6th of Jan 2019.

Happy stamping! Smiley
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 30/11/2018, 18:52:28 UTC
I'm happy to announce that my package has arrived!
it's definitely a very heavy-duty steel slab, that's for sure Tongue

Glad to hear, let us know if it worked and what you think about it.

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Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 30/11/2018, 18:39:52 UTC

I may purchase on soon, best of luck to the OP.


Thank you Smiley
Post
Topic
Board Project Development
Merits 1 from 1 user
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 28/11/2018, 20:50:05 UTC
⭐ Merited by eternalgloom (1)

Now I hope that I have a big enough hammer.

Something like this should do the trick, right?


Looks like a proper hammer, it should do the job Smiley

The hammer should be at least 1kg / 3.3 lbs
1.5 kg is a good compromise between its mass and ability to hold it.
2 kg works great too (if you can hold it).
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 27/11/2018, 10:59:27 UTC
Just because I'm curious, was I your first customer?

Close, you were the second Smiley

I just shipped the wallet to you, can't wait to hear your feedback.
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 26/11/2018, 15:39:55 UTC
Well, to help you with the launch, I've written a short announcement on my Steemit blog.
Hope that it'll get you some backlinks at least and some recognition.

Appreciated, thanks Smiley

With regards to the price, please keep a few things in mind:

  • You only need 1 stamping set to cover all your crypto assets and your family/friends
  • There's 4x more steel in 4mm plate than in 1mm plate Smiley
  • 70 EUR is only 0.02 BTC (used to be even less), I guess this won't matter much when you've lost your seed due to fire/flood/negligence etc. - think of it as insurance

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Topic
Board Project Development
Merits 1 from 1 user
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 26/11/2018, 13:31:15 UTC
⭐ Merited by eternalgloom (1)
I've not been active on the forum - been busy preparing the product and the Coldbit online shop.

You can pay with Bitcoin (on-chain), Lightning Network (off-chain) and credit cards.

Here's the letter stamping tutorial and FAQs

Feel free to ask if you have any questions: support@coldbit.com
Post
Topic
Board Auctions
Re: Advertise on this forum - Round 257
by
globtroter
on 08/10/2018, 13:59:26 UTC
5@0,05

Needs to be divisible by 0.02 so either 0.04 or 0.06
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 21/09/2018, 15:45:26 UTC
- Will the seed be covered with some material or the stainless steel on which the seed is written on will be an open cover?

The seed is stamped on a 4mm steel plate. It is then covered by another steel plate (2mm thick). The 2 plates are bound with nickel binding posts. Once bound the seed is not visible. I'll include a metal box for transport/storage:



Naturally a question then arises: "what happens when someone steals my wallet?". I personally use and recommend a passphrase (the 25th word) and NOT STAMPING IT on the plate. However if you wish to stamp the passphrase there is place for it at the bottom of the plate (it should fit ~ 16 characters).

- Don't you think the seed would be just more readable and more prone to exposure when it's printed on a big metal?

I think the seed should be readable. It should be big enough (and deep enough) that when your house burns and the steel oxidizes/rusts on its outer layer (due to high temperature) or is covered with several tonnes of rubble the letters should still be readable.

- Are you self-funded or backed up by venture capitalists?

I'm self funded. I'm a programmer, I work with code but I'm also interested in metalworking.
Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 21/09/2018, 12:59:48 UTC

If you're ever going to release a version 2.0 of this, you might want to figure out a way to stamp entire words on.
Maybe through some kind of placeholder for individual letter bits?


This will be difficult to achieve with manual stamping because of the momentum required to punch just 1 letter.
To get good results with 1 letter you need a 1kg - 1.5kg hammer.

Punching 4 or 6 letters at once would require a ~ 6kg hammer, good alignment of all the stamps and force spread out evenly on each stamp.
This is something that would require some kind of support from a machine (punching 24 words with a 6kg hammer would be tiresome/impossible for most people).

Post
Topic
Board Project Development
Re: Coldbit - New stainless steel seed backup design
by
globtroter
on 21/09/2018, 11:51:46 UTC
Any idea what your price will be? Ballpark figure is fine.

The price will be around 70 - 100 EUR. I'll figure out a competitive approach to multiple plates (eg. buy 2 get 3rd one free or similar).

The steel is 4mm thick, I don't think anyone sells seed backup plates that thick at the moment.
It is heavy but will not warp or deform after punching 24 words.

It's definitely something that you can bury in the ground and it'll still be there with readable words decades later.
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Topic
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Merits 7 from 3 users
Coldbit - New stainless steel seed backup design
by
globtroter
on 21/09/2018, 08:31:20 UTC
⭐ Merited by Vod (5) ,eternalgloom (1) ,LoyceV (1)
Hi folks.

If you own any cryptocurrencies like Bitcoin you probably know how important it is to have a backup of your seed written down on something that will survive a flood or a house fire.

After evaluating current cold storage solutions, I must say I wasn't thoroughly pleased with their quality and design. My thoughts are reflected in Jameson Lopp's  tests of various seed backup products.

So I decided to create my own. After months of testing I came up with a design that I'm very satisfied with and would like to share it with you.

• 4mm thick stainless steel (seed backup) + 2mm thick cover
• nickel binding posts, no loose parts
• 3mm A-Z letter stamp set made from hardened steel included
• capable of storing 24 recovery words + a passphrase, up to 8 characters per word
• compatible with Trezor, Ledger, KeepKey, Jaxx, Exodus, Electrum and many more
• metal box

It is called Coldbit. It's made of thick stainless steel (AISI 304). Instead of assembling the seed letters are stamped onto the plates using the most reliable and bulletproof technique - a hammer and a letter stamp set. They will not scramble even if a heavy log from the roof of your house hits it during a house fire. The steel plates are then bound together using nickel binding posts.

I believe this wallet will survive the most catastrophic events. I know that my seed words are safe inside it.

I'm planning to launch an online shop in Q4 2018. The prices will be competitive. Initially we'll ship only to EU countries and in Q1 2019 to the rest of the world. Look out for an announcement, I'll include a discount code when we launch.

Stay tuned.