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Author Topic: [coinb.in] Open Source, Multi Signature, HD Wallet and more!  (Read 41477 times)
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OutCast3k
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November 29, 2014, 01:20:24 PM
 #161

Vanity Multi-Signature Addresses? Compressed?

Is this possible? Or is it too much hard work? Or it's no longer multi-sig because you have one computer generating all the private keys?

How about, in theory? Like, 3DabsAddress instead of 3randomlooking.

Also, can multi-sig addresses be compressed? I found this, and it requires uncompressed public keys: http://coinb.in/multisig/

*edit* then I found this thread, so I'm posting here instead.

Sorry for the late reply, i've been so busy lately!

The project is still alive and well! There is actually going to be an entirely new version released in the next week or so that will support compressed public keys and offer a few other new features! but not vanity addresses.

If anyone would like to beta test for me, please get in touch via email and i'll give you access.

Thanks everyone for your support, if you like this project please donate Smiley

-

*Edit* To everyone who has PM'd me asking if they can use the source code, yes you can its totally free to use, edit and redistribute. Enjoy!

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
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chriswilmer
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November 29, 2014, 08:00:38 PM
 #162

How can we email you? What's your email?
OutCast3k
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November 29, 2014, 11:03:26 PM
 #163

How can we email you? What's your email?

Its listed on my profile, but its: <my><user><name>@gmail.com

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
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November 30, 2014, 12:31:53 AM
 #164

How can we email you? What's your email?

Its listed on my profile, but its: my.user.name@gmail.com

That's an awesome email address! Smiley

Btw, it's not listed on your profile. It shows up as "hidden."
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December 01, 2014, 10:47:40 PM
 #165

The new version is live here: http://coinb.in Cheesy will be published to github shortly.

Major changes:

  • Multisig address generation now supports compressed public keys.
  • Transactions and redeem scripts will return more information when they're decoded, including the N-of-M number and the amount of times they've been signed.
  • Better transaction builder. You can build transactions from regular addresses as well as multisig addresses.
  • Improved signing function. Regular transactions as well as multisig transactions can be signed.
  • You can generate compressed and uncompressed public keys.
  • Private keys are given a password field by default with option to show them later.
  • You can generate addresses from Brain wallets.
  • A built in browser based wallet, with access to your own private keys!

If you want to see more, please support the project by donating Smiley

Enjoy!

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
OutCast3k
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December 15, 2014, 01:13:07 PM
 #166

Fixed a few bugs and added loads of little features, you can even set the "lock time" of transactions now.

Feedback and suggestions are welcome Smiley

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
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December 15, 2014, 06:26:54 PM
 #167

Fixed a few bugs and added loads of little features, you can even set the "lock time" of transactions now.

Feedback and suggestions are welcome Smiley

Awesome!
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December 26, 2014, 07:41:35 AM
 #168

Fixed a few bugs and added loads of little features, you can even set the "lock time" of transactions now.

Feedback and suggestions are welcome Smiley

Excellent, I figured with time that would come to https://coinb.in/ ~ thanks for working with myself and ktorn (and some others) some time back on this most useful thing.

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December 29, 2014, 06:13:08 AM
 #169

I am trying to get/make/see if its possible to make a home game poker app using bitcoin. Someone pointed me here. Would this work? Any help would be apriciated. Here or
http://www.reddit.com/r/Bitcoin/comments/2qoifa/need_help_with_app_id_like_to_see_made/ 
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December 31, 2014, 11:57:37 AM
 #170

Great project! Would use this when time comes! Smiley

   ~~MZ~~

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January 26, 2015, 06:35:38 PM
 #171

Thanks for your efforts this service is awesome.
Giulio Prisco
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April 05, 2015, 04:34:36 PM
 #172

Awesome indeed.

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Giulio Prisco
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April 08, 2015, 06:56:07 AM
 #173

I did an end-to-end coinb.in test.

1 - I created and funded two wallets A and B

2 - From A I created a 2-2 multisig address with the public keys of A and B.
Address:
3LvaMMABYXamGkH1DQbLfB4pYp8pU3of7T
I saved the redeem script.

3 - From B, I sent money to 3LvaMMABYXamGkH1DQbLfB4pYp8pU3of7T
Transaction:
https://btc.blockr.io/tx/info/230f6e6c3d8bca2686cdfaeda7b24f1f08d657f82cdb82a687a89834e84be52c

4. From A, I created a transaction to send the unspent output of 3 to an external address, loading the inputs from the redeem script (output of 2).

5. From A, I signed the transaction and verified it (signed 1 of 2 OK).

6. From B, I signed the transaction (output of 5) and verified it (signed 2 of 2 OK).

7. From B, I broadcast the transaction (output of 6).

8. Received:
https://blockchain.info/tx/e1e14eb2a56df5812bc4d8b2deea64cf978767517ec38c397ede2c68af6a6762

I will do more tests appropriate to the specific use case that I have in mind. In general I thing coinb.in is great but perhaps too difficult for today's casual users - those who need click and simple one-click solution and are unable to open a new window or copy/paste. However, I am sure that it's easy to adapt the user the interface to specific use cases, hiding complex features and selecting the needed data (e.g. key and transaction to sign) automatically.

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OutCast3k
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May 11, 2015, 11:02:50 AM
 #174

A few new features coming soon to coinb.in, such as:

  • HD Wallet Support (bip32)
  • Use of Bitcoins Testnet
  • Retrieve Unspent inputs from alternative blockchain explorers, such as blockr
  • Broadcast to different blockchain explorers
  • Build transactions for other Altcoins

I'm looking for beta testers and for someone to make a few video tutorials on using various aspects of Coinb.in - if anyone is interested, please get in touch by email OutCast3k<at>gmail.com

Smiley

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
Muhammed Zakir
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May 11, 2015, 11:11:31 AM
 #175

I can be a beta tester and for tutorials, need more info. Please PM me.

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May 17, 2015, 12:59:27 AM
 #176

I can be a beta tester and for tutorials, need more info. Please PM me.

Thanks, will be in touch shortly.

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
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May 17, 2015, 01:00:21 AM
 #177

HD support (bip32) has been added to coinb.in - enjoy everyone!

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
xDan
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May 29, 2015, 11:50:17 AM
 #178



"what is not spent will be used as a transaction fee" - from the popup tip

pic related utterly scares me.

I haven't used the service, so I don't know if such a transaction would go through... But the fact it is even implied that it might is a very very scary thing and will keep me from using what otherwise looks like an excellent piece of software. Default to 100% of the value going to the transaction fee (if I don't put anything in the "amount" box) is crazy and might one day lose somebody all their coins.

A sane option might be giving a large red warning if the tx fee is larger than say 0.1% of the total value. Or not allowing it at all if it's over $1 worth or something.

If a change address is required, the user should be asked for it also with big warnings that it should be a safe, permanent address, not in a virtual machine or livecd etc (where people have lost large amounts in the past). A conservative approach to handling change is to send it right bank to the original address. Not quite as private, but better than losing money. (and still needs warnings to the user that the address/private keys they are sending from must be kept!)

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Up, up and away with my beautiful, my beautiful Bitcoin~
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May 29, 2015, 12:00:24 PM
 #179

[ img]http://i.imgur.com/GrRzQrK.png[/img]

"what is not spent will be used as a transaction fee" - from the popup tip

pic related utterly scares me.

I haven't used the service, so I don't know if such a transaction would go through... But the fact it is even implied that it might is a very very scary thing and will keep me from using what otherwise looks like an excellent piece of software. Default to 100% of the value going to the transaction fee (if I don't put anything in the "amount" box) is crazy and might one day lose somebody all their coins.

A sane option might be giving a large red warning if the tx fee is larger than say 0.1% of the total value. Or not allowing it at all if it's over $1 worth or something.

If a change address is required, the user should be asked for it also with big warnings that it should be a safe, permanent address, not in a virtual machine or livecd etc (where people have lost large amounts in the past). A conservative approach to handling change is to send it right bank to the original address. Not quite as private, but better than losing money. (and still needs warnings to the user that the address/private keys they are sending from must be kept!)

I agree.

I suggest to use recommended fee instead if change amount as fee and as this is advanced software, please allow users to edit transaction fee. You can send change back to origin address like xDan told.

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May 29, 2015, 12:17:06 PM
 #180

Hey xDan!

Before I start responding to your points individually, I just want to remind you that coinb.in is aimed at the "advanced" bitcoin user and offers the "tools" required for them to understand how things work. Also the code is also remarkably simple and easy to follow compared to say bitcoinjs.

I haven't used the service, so I don't know if such a transaction would go through... But the fact it is even implied that it might is a very very scary thing and will keep me from using what otherwise looks like an excellent piece of software. Default to 100% of the value going to the transaction fee (if I don't put anything in the "amount" box) is crazy and might one day lose somebody all their coins.

A sane option might be giving a large red warning if the tx fee is larger than say 0.1% of the total value. Or not allowing it at all if it's over $1 worth or something.

The transaction would indeed go through if you signed it. The question is, who am I to prevent someone from choosing their transaction fee, regardless of how high or low it might be. It would be an unfortunate mistake to accidentally set a large fee so I will take into consideration what you've said and perhaps throw up a confirmation notice if the fee is too large. But please keep in mind this is the first time someone has mentioned this and made such a big issue about it.

If a change address is required, the user should be asked for it also with big warnings that it should be a safe, permanent address, not in a virtual machine or livecd etc (where people have lost large amounts in the past). A conservative approach to handling change is to send it right bank to the original address. Not quite as private, but better than losing money. (and still needs warnings to the user that the address/private keys they are sending from must be kept!)

Yes a change address is required, again who am I to send automatically send it back to them. My philosophy is its your money, you can do with it as you like.

If you dont want to use the tools to manually build a transaction, and want the comfort of your funds being returned to you, try the wallet instead https://coinb.in/#wallet you dont get same functionality as building the transaction yourself, and signing it etc, but if the transaction fee is your issue, you can be sure it will return it to your address. Check it out Smiley

Thanks again for the feedback and suggestions. Very great full!

coinb.in - Open Source, Multi Signature, HD Wallet and more! | Donate: 1CWHWkTWaq1K5hevimJia3cyinQsrgXUvg
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