Indiegogo launch - help us! :o - page 3.

cryptoplatz

newbie

Activity: 14

Merit: 6

Quote from: dkbit98 on October 05, 2022, 09:57:41 AM

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

cryptoplatz

newbie

Activity: 14

Merit: 6

Quote from: PawGo on October 05, 2022, 10:28:43 AM

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

PawGo

legendary

Activity: 952

Merit: 1386

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?

r_victory

sr. member

Activity: 1955

Merit: 381

English<->Pt-BR - Professional Translations(90+)

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

legendary

Activity: 952

Merit: 1386

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

dkbit98

legendary

Activity: 2212

Merit: 7064

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

Quote from: cryptoplatz on October 05, 2022, 09:49:25 AM

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.

cryptoplatz

newbie

Activity: 14

Merit: 6

Quote from: JinCheng214 on October 05, 2022, 09:02:46 AM

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

Thank you! Grin

cryptoplatz

newbie

Activity: 14

Merit: 6

Quote from: dkbit98 on October 05, 2022, 09:03:00 AM

Quote from: cryptoplatz on October 05, 2022, 08:11:33 AM

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!

dkbit98

legendary

Activity: 2212

Merit: 7064

Quote from: cryptoplatz on October 05, 2022, 08:11:33 AM

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.

JinCheng214

newbie

Activity: 4

Merit: 0

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

cryptoplatz

newbie

Activity: 14

Merit: 6

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

Topic: Indiegogo launch - help us! :o - page 3. (Read 681 times)