Indiegogo launch - help us! :o

[cryptoplatz]

Hi guys!

Check it out the product that we are going to launch

https://www.indiegogo.com/projects/cryptoplatz-card

More information on our site: https://www.cryptoplatz.ch/

FAQ:
https://www.cryptoplatz.ch/support

https://static.wixstatic.com/media/25ca25_c0596fd7f0204f248b6c73111a27a5dd~mv2.png/v1/fill/w_307,h_500,al_c,q_85,enc_auto/app_card_500_white.png


Crypto Platz Metal Card

+ Resistant to fire, water, bugs, shock wave and rust (better than a piece of paper)

+ Warranty forever

+ Encrypt your seed recovery phrase with AES-256

+ Keep it offline

+ Open source app (if you want to use)

+ Easy to use with NFC (no more metal letters)

Compare Crypto Platz Card with others options:
https://www.cryptoplatz.ch/post/comparing-seed-phrase-backup

[JinCheng214]

Looks like fantastic project as you are implementing the way to protect the seed phrase.

[dkbit98]

Check it out the product that we are going to launch

How exactly do we enter words into this Crypto Platz Metal Card?
If this is done only with your app in digital form with encryption, that means we probably can't recover seed words in any other way, so I see this a single point of failure.
I like that stainless steel is used, but I personally prefer entering seed words directly in physical form with engraving, and I think there are other cards that work in similar way like yours.
Current price of $100 is to high for me, until I see some stress testing and code review.

[cryptoplatz]

Check it out the product that we are going to launch

How exactly do we enter words into this Crypto Platz Metal Card?
If this is done only with your app in digital form with encryption, that means we probably can't recover seed words in any other way, so I see this a single point of failure.
I like that stainless steel is used, but I personally prefer entering seed words directly in physical form with engraving, and I think there are other cards that work in similar way like yours.
Current price of $100 is to high for me, until I see some stress testing and code review.

Hi

I understand your concern, but let me explain:

1) You can use any app like (NFC tools) to use our card (it is industry standard) to write and read information stored on the card

2) CryptoPlatz app will be open source, so anyone can download and use it.

For now, it is in test, so please take a look on this video

https://youtu.be/KRzsZbiBLVI

There are similar apps, but they are cryptocurrency wallet. CryptoPlatz it is not a wallet, it is a storage to save you seed recovery phrase. CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.

Thank you for your view, help us a lot!

[cryptoplatz]

Looks like fantastic project as you are implementing the way to protect the seed phrase.

Thank you! 

[dkbit98]

You can use any app like (NFC tools) to use our card (it is industry standard) to write and read information stored on the card

Ok that is better, but I am careful with anything that uses NFC, that is just short range antenna, so in theory it can be hacked.

For now, it is in test, so please take a look on this video

Card on this video doesn't look like it's made from stainless steel to me.
I would remove word Crypto from card or add something like CP shortcut with logo, to avoid getting attention from bad people.

There are similar apps, but they are cryptocurrency wallet. CryptoPlatz it is not a wallet, it is a storage to save you seed recovery phrase. CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.

No, I am sure Satochip/Satodime/SeedKeeer and one other company (can't remember the name) have cards who can be used only for storing recovery phrase.
Maybe they are not made from stainless steel but they work in similar way like Crypto Platz.

PS
Please lock your other topic.
There is no need to have multiple topics with same content in forum.

[PawGo]

CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.

What makes it compatible with wallet or not?
In my opinion you just use NFC to transfer some data to the card (so you have NFC chip in/on the card) and as it could be any data, it has nothing to do with BIP39 compability.
And as I understand, the same application is needed to read from NFC chip and restore the content, right? That would be very very very risky. Now, on market we have in general Tile trackers and Apple AirTags. In the past there was also TrackR - one year ago they stopped supporting their product, removed apps from the mobile stores and suddenly all the products they sold during last years became a plastic junk.

[r_victory]

I agree that there are other cards with the same purpose, as mentioned above, but the big difference here is the idea of an unbreakable, stainless, resistant, and durable "card". Am I right?

[PawGo]

Looking at that example page: https://www.shopnfc.com/en/content/6-nfc-tags-specs

Would you tell which kind of tag do you use? How about data retention, could you guarantee the data will be “safe” after 11 years?

[cryptoplatz]

Looking at that example page: https://www.shopnfc.com/en/content/6-nfc-tags-specs

Would you tell which kind of tag do you use? How about data retention, could you guarantee the data will be “safe” after 11 years?

Hi

Thank you for your question, this help us a lot! We are using NTAG424 from NXP, industry leader on segment. The technical specification is in https://www.cryptoplatz.ch/support

I'm copying here:

This is the specification of Crypto Platz card:

NFC Chip: NXP NTAG424 DNA

NFC Standard: SO/IEC 14443-A

NFC Forum: Type 4

Universal Compatibility: Yes

UID (Unique ID): 7 bytes

Weight: 6g - like a credit card.

Size: 85.5mm X 54mm X 0.84mm (3.37 inches x 2.16 inches x 0.034 inches) - like a credit card.

Total memory: 416 bytes

Available Memory: 256 bytes

Communication Rate: 848 kbit/s

Data Encryption: AES-256

File system compliant with ISO 7816-4

Write Endurance minimum: 200,000 cycles

Data Retention minimum: 50 years

Material: Metal stainless

Temperature: -55 +125 °C (-67 +302 °F)

Supporting Secure Unique NFC Message (SUN), which enable security and encryption, such as: advanced anti-counterfeiting, secured sensitive data applications, secure login and authentication.

Compatible with all NFC Smartphones, NFC Tablets, and ISO14443-A NFC Readers.

Data sheet: https://www.nxp.com/docs/en/data-sheet/NT4H2421Gx.pdf

[cryptoplatz]

You can use any app like (NFC tools) to use our card (it is industry standard) to write and read information stored on the card

Ok that is better, but I am careful with anything that uses NFC, that is just short range antenna, so in theory it can be hacked.

For now, it is in test, so please take a look on this video

Card on this video doesn't look like it's made from stainless steel to me.
I would remove word Crypto from card or add something like CP shortcut with logo, to avoid getting attention from bad people.

There are similar apps, but they are cryptocurrency wallet. CryptoPlatz it is not a wallet, it is a storage to save you seed recovery phrase. CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.

No, I am sure Satochip/Satodime/SeedKeeer and one other company (can't remember the name) have cards who can be used only for storing recovery phrase.
Maybe they are not made from stainless steel but they work in similar way like Crypto Platz.

PS
Please lock your other topic.
There is no need to have multiple topics with same content in forum.

Hi, I understand your question, thank you for that, it help us a lot, let me share my view:

Abou this: "Ok that is better, but I am careful with anything that uses NFC, that is just short range antenna, so in theory it can be hacked."
1) We use NTAG424 that is focus in security
2) The information (seed) is encrypted with AES-256 (same of Bitcoin)
3) You can put the card inside a RFID/NFC Blocker (We will provide that, thank you)
4) If somebody put the hands in you paper or cryptosteel, he can read and stole your crypto. But if you store your seed in CryptoPlatz Card, he can't ready and stole, because is encrypted.

"Card on this video doesn't look like it's made from stainless steel to me."
1) Yes, you are correct. This is a prototype in PVC. Because that we are on https://www.indiegogo.com/projects/cryptoplatz-card to manufactory in metal stainless.

About competitors I agree with you too.

I will lock the other topic, tnks.

[seoincorporation]

After reading about the card i see it's only for storage and we can't use it to spend or deposit bitcoins. The main idea is to save a passphrase, mnemonic, or passwords. And it has a limit of 888 characters.

To access to the data we need the APP and the password, if we forget the password then all our data will be gone.

From my point of view it doesn't worth to spend money on a hardware to storage data with a password, there are a lot of ways to do that. Even we can use PGP to encrypt any data  and then Decrypt it with a key.

I don't say the product is bad, it has some great features, but if i will have a crypto card i would use one that allows me to make payments.

[cryptoplatz]

CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.

What makes it compatible with wallet or not?
In my opinion you just use NFC to transfer some data to the card (so you have NFC chip in/on the card) and as it could be any data, it has nothing to do with BIP39 compability.
And as I understand, the same application is needed to read from NFC chip and restore the content, right? That would be very very very risky. Now, on market we have in general Tile trackers and Apple AirTags. In the past there was also TrackR - one year ago they stopped supporting their product, removed apps from the mobile stores and suddenly all the products they sold during last years became a plastic junk.

Remember, our app will be open source on GitHub, so anyone can read and copy.

But more important, if you know the password used to encrypt the data (seed), you can decrypt using AES-256 algorithm.

So you don't need our app, it just exist just to be easy to use. 

[cryptoplatz]

After reading about the card i see it's only for storage and we can't use it to spend or deposit bitcoins. The main idea is to save a passphrase, mnemonic, or passwords. And it has a limit of 888 characters.

To access to the data we need the APP and the password, if we forget the password then all our data will be gone.

From my point of view it doesn't worth to spend money on a hardware to storage data with a password, there are a lot of ways to do that. Even we can use PGP to encrypt any data  and then Decrypt it with a key.

I don't say the product is bad, it has some great features, but if i will have a crypto card i would use one that allows me to make payments.

Hi

Yes, you are right. The card is not to spend crypto, there is another options to this, like Coinbase Card and Binance Card.

CryptoPlatz Card it is to save you passphrase or mnemonic on a device more resistant than a piece of paper.

The password is optional, if you use, will be encrypted.

You can use PGP and others ways, you are right again. But CryptoPlatz App are focus on the end user, that need to keep his "seed passphrase" store safe, but don't have the skills to do this alone.

 Let me know, where you save your passphrase today, on a paper?

[AB de Royse777]

Let me know, where you save your passphrase today, on a paper?

I don't think anyone with crypto for long time is going to have their passphrase only in a piece of paper or in digital format with single point of access.

CryptoPlatz Card it is to save you passphrase or mnemonic on a device more resistant than a piece of paper.

What benefit does it bring over saving passphrase on a metal plat or any other fire resistance methods available?

[cryptoplatz]

Let me know, where you save your passphrase today, on a paper?

I don't think anyone with crypto for long time is going to have their passphrase only in a piece of paper or in digital format with single point of access.

CryptoPlatz Card it is to save you passphrase or mnemonic on a device more resistant than a piece of paper.

What benefit does it bring over saving passphrase on a metal plat or any other fire resistance methods available?

I agree with you, it is important to have more than one backup of seed recovery phrase

When compare with metal plat, there are a lot of benefit, but the most important is you can save the passphrase encrypted with AES-256. So if anyone put the hands on the card, they can't read the passphrase.

Take a look in the post comparing the pros and cons: https://www.cryptoplatz.ch/post/safe-guard-your-crypto-assets-with-fool-proof-seed-phrase-storage-1

https://static.wixstatic.com/media/25ca25_a9bb756c121d4f05ac282ab6793706e7~mv2.png/v1/fill/w_740,h_1130,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/25ca25_a9bb756c121d4f05ac282ab6793706e7~mv2.png

[SFR10]

+ Warranty forever

I don't think I've ever seen any manufacturer that offers such a thing, so that's nice for a change but if I understood everything correctly, we shouldn't solely rely on Crypto Platz ^{[e.g. if someone steals it, we have nothing to use for the decryption process (I do know we can purchase multiple metal cards but unfortunately, it costs a lot and it seems there's no discount for getting multiple cards)]} and it'd be best if it's used in conjunction with other known methods ^{[not just multiple copies of the same form of backup]}.

• But CryptoPlatz App are focus on the end user, that need to keep his "seed passphrase" store safe, but don't have the skills to do this alone.
  

  I agree with you, it is important to have more than one backup of seed recovery phrase
  

The password is optional, if you use, will be encrypted.

Am I correct in assuming that without the password, anyone that gets their hands on the metal card in question, can easily decrypt or rather access the information that's stored in it?

[PawGo]

The password is optional, if you use, will be encrypted.

Am I correct in assuming that without the password, anyone that gets their hands on the metal card in question, can easily decrypt or rather access the information that's stored in it?

The question is also what is stored. Is it a plain text (words) or for example entropy (as seed words <-> entropy are exchangeable). But it would require an algorithm inside the application which would "understand" the seed words (verify checksum etc). And I suppose it would not support seeds other than BIP39, maybe would be even limited to English dictionary. Much simpler would be to store any text provided by user, without parsing it.

[cryptoplatz]

+ Warranty forever

I don't think I've ever seen any manufacturer that offers such a thing, so that's nice for a change but if I understood everything correctly, we shouldn't solely rely on Crypto Platz ^{[e.g. if someone steals it, we have nothing to use for the decryption process (I do know we can purchase multiple metal cards but unfortunately, it costs a lot and it seems there's no discount for getting multiple cards)]} and it'd be best if it's used in conjunction with other known methods ^{[not just multiple copies of the same form of backup]}.

• But CryptoPlatz App are focus on the end user, that need to keep his "seed passphrase" store safe, but don't have the skills to do this alone.
  

  I agree with you, it is important to have more than one backup of seed recovery phrase
  

The password is optional, if you use, will be encrypted.

Am I correct in assuming that without the password, anyone that gets their hands on the metal card in question, can easily decrypt or rather access the information that's stored in it?

Hi

I agree with you, better to have multiple options to backup.

Without the password, anyone that gets their hands on the card, can read the information (in this case works like cryptosteel)

Good to know you like the warranty forever.

[dkbit98]

If somebody put the hands in you paper or cryptosteel, he can read and stole your crypto. But if you store your seed in CryptoPlatz Card, he can't ready and stole, because is encrypted.

Yes, but they can't have my coins if I have one or more strong passphrases on top of my paper or metal plate.
CryptoPlatz is encrypted, but if customer used weak password that it can be hacked and extracted by someone who knows how to do it.
I am not saying CryptoPlatzdon't have some advantages, but it's certainly not universally perfect solution.

The password is optional, if you use, will be encrypted.

Wait a minute, if password is only optional than there is no real difference compared to regular paper or metal plate.

Yes, you are correct. This is a prototype in PVC. Because that we are on https://www.indiegogo.com/projects/cryptoplatz-card to manufactory in metal stainless.

I guess you could create some free campaign or beta testing for this prototype PVC cards, and if everything works fine you could probably collect funds easier on indiegogo.
Problem I have with stainless steel material over NFC chip is that it could block the antenna signal and not work in the real life.