[ANN/PoC] Coldkey Cryptobond - FIRST Timelocked Physical Bitcoin

[MoparMiningLLC]

this is a very cool way to use bitcoin! I see multiple uses on how this could be used to help store the value of bitcoin. good job!

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[Lesbian Cow]

I finally got a chance to test drive the Coldkey Cryptobond.

First, I love the concept.  As an uncle to several I can see giving these as gifts.



It is really as simple as following the step by step instructions printed directly on the Cryptobond. 

My locked transaction: 0200000000010120286afd0ba5cf5aa8186b3b25085808db028b518d1dff858777b3c7e97b385c0 000000000feffffff01a086010000000000160014c580f7e426632df79b4ea55dd4b1e578b3895d dc0247304402201bf313912f7201d0a61ff88ff708add6439cd1058b55d1d5d9f00646620c7d210 2200898f02a68fc457b8d0d474e6a1c9d51278de9173e96c65d9bfc7b265fc85c98012103be2db8 08a8cef4188bb411a2b1970014c90c15182ab9e7faf124100c9d14611f207f0900
   
I tried broadcasting before the locked block and it returned an error.  Once the block occurred I was able to successfully broadcast the locked transaction. 

The final step was to peel the hologram and sweep the private key.  The hologram has a clear film over it which required use of a razor knife to remove.  No way anyone is getting at the private key without it being very apparent.  I was able to then sweep the private key (qr code) into a Ballet Wallet cold storage card. 

Public address of the cryptobond:  https://www.smartbit.com.au/address/bc1qckq00epxvvkl0x6w54wafv090zecjhwuhklcuq

Really cool new product and very well executed.  There is definitely nothing like it available.

[LoyceV]

I finally got a chance to test drive the Coldkey Cryptobond.

I used your big picture to test the error correction on the locked transaction: when I cover about 5% of the image with my hand, my phone can still scan it. That's good

[owlcatz]

Ok, my card unlocks in just a few blocks. However, I already broadcast it using blockypher.

Strangely, it's accepted and shows the lock time as 622800...

https://live.blockcypher.com/btc/tx/50b9d14f35394c23faf7c303d75111ba3d86c2f180fca1c78911b483725d10a2/

Will update shortly once it hits or fails...

[owlcatz]

Ok, my card unlocks in just a few blocks. However, I already broadcast it using blockcypher.

Strangely, it's accepted and shows the lock time as 622800...

https://live.blockcypher.com/btc/tx/50b9d14f35394c23faf7c303d75111ba3d86c2f180fca1c78911b483725d10a2/

Ok. https://www.blockchain.com/btc/tx/50b9d14f35394c23faf7c303d75111ba3d86c2f180fca1c78911b483725d10a2

Must have worked - 5 blocks in advance!

Awaiting confirmation, then will peel/update.  

Peeled and swept! Thanks so much Yogg! - Solid job, through and through!

[ChiBitCTy]

Yoggy..Sorry was thinking the lock up was a bit longer...But well done good sir! First time I’ve ever broadcasted to the network, or used a smart contact. Very fn cool and quite unique! I have all sorts of ideas how this could be used out in the “real world”...that is when we can all rejoin it!

Noticed the updated holograms. Those are super secure! Way harder to remove than any holo I’ve ever peeled. Great job!  

Will posts some pics shortly

Please, I'd absolutely LOVE to hear more about your ideas of how these can be used in the real world.

  We are over due for a chat, look forward to throwing them all at ya.

Btw I sent the .001  BTC back to your Yogg wallet listed on your profile (from another wallet, didn’t want to wait for confirm).  It’s better served going to your continued innovations with ColdKey. Can’t wait to see what’s up next!

[yogg]

Ok, my card unlocks in just a few blocks. However, I already broadcast it using blockcypher.

Strangely, it's accepted and shows the lock time as 622800...

https://live.blockcypher.com/btc/tx/50b9d14f35394c23faf7c303d75111ba3d86c2f180fca1c78911b483725d10a2/

Ok. https://www.blockchain.com/btc/tx/50b9d14f35394c23faf7c303d75111ba3d86c2f180fca1c78911b483725d10a2

Must have worked - 5 blocks in advance!

Awaiting confirmation, then will peel/update.  

Peeled and swept! Thanks so much Yogg! - Solid job, through and through!

Hey owlcatz
Thanks for the test !! I'm glad it worked as planned.

Hah !
Yes, when making my tests I also noticed that blockcypher push transaction feature will accept the transaction even if non-final.

However, the bond works as expected : no miner will include the locked transaction into a block until it has properly matured;
if they did, that block would be rejected by the network since it includes an invalid transaction.

Yoggy..Sorry was thinking the lock up was a bit longer...But well done good sir! First time I’ve ever broadcasted to the network, or used a smart contact. Very fn cool and quite unique! I have all sorts of ideas how this could be used out in the “real world”...that is when we can all rejoin it!

Noticed the updated holograms. Those are super secure! Way harder to remove than any holo I’ve ever peeled. Great job! 

Will posts some pics shortly

Please, I'd absolutely LOVE to hear more about your ideas of how these can be used in the real world.

  We are over due for a chat, look forward to throwing them all at ya.

Btw I sent the .001  BTC back to your Yogg wallet listed on your profile (from another wallet, didn’t want to wait for confirm).  It’s better served going to your continued innovations with ColdKey. Can’t wait to see what’s up next!

Thanks so much Chibi for testing the Cryptobond. Very cool that it worked as well !
I wasn't around much these last days, as I don't come to the office anymore because lockdown but yeah a chat is long over due now.
I'll ping you soon.


We are currently making the first release of Cryptobonds ready for you soon.
I expect them to be available sometime during April but definetely May at the latest.

Thank you everyone !

[K-Paxian]

omg so cool. How can the plebs here get one of these as well? 

[MoparMiningLLC]

I got mine in today - they look great!

I did attempt a push using block cypher and you can see from the screenshots the transactions are valid for the amount and are also locked to a set block time as intended

Thanks Yogg!