Topic: Platform-independent & 'easy to audit' basic tools to sign offline transactions. (Read 926 times)

@op

What would you call easily auditable and platform independent?

Technically, you could create a transaction with a pen, pencil and a calculator.

It looks like a Mod noticed my suggestion and deleted the other two threads.

Agreed (much better to just have the one thread).

You could take a look at CIYAM Safe also (https://susestudio.com/a/kp8B3G/ciyam-safe). It uses QR codes for 100% "air-gapped" security and does the tx signing with an "offline" computer running bitcoind (and is built mostly from "bash scripts" rather than "proprietary" software).

Bitcoin Core is plattform-independent and the most solid resource available. And it's possible to sign transactions, even if the client is unsynchronized.

https://bitcointalksearch.org/topic/m.7306076

That aside, I'm pretty sure Electrum and Armory would be fine for this purpose as well.

Edit: ... but I guess you are looking for is some small script. FWIW: I'd start with the python-bitcoinlib, if I'd wanted to code this..

https://github.com/petertodd/python-bitcoinlib
https://github.com/petertodd/python-bitcoinlib/blob/master/examples/spend-p2pkh-txout.py

Hello,

I have created safely different private keys for long term cold storage addresses on an air gap machine using dices and different easily auditable platform-independent / multi-platforms software like bitaddress.org

After creation of these cold storage addresses, I made a test to redeem funds from them - before committing on storing larger amounts of bitcoins on them.

So I have been looking for secure and easily auditable platform-independent / multi-platforms ways to sign offline transactions from these cold storage addresses (the same way I was using secure and easily auditable platform-independent / multi-platforms to generate private keys).

So far I found only  two tools to do so and I used both of them. These tools generated raw transactions that I carefully checked before broadcasting them using https://blockchain.info/pushtx

These 2 tools are:

https://www.strongcoin.com/downloads/offlineTransaction.zip

http://offlinewallet.appspot.com/

However, the offline signed transactions generated through these 2 tools would not confirm and I don't know why (of course, I don't care about the tiny amounts of money involved - as this was just for testing purposes before committing larger amounts of btc, as I said at the beginning).

Here are the 3 cold storage addresses involved in these different non-confirmed transactions.

1NFo5qAsCm5Uc633LdivSu7QUF2kh2PSrw

1BA4xtowWC3HqsYWwWZcKmKLmUgSaw9diG

1P4nHtswu8CiZDHiPZX486m35BedGpk1gX

Therefore I am still stuck on finding a secure and easily auditable platform-independent / multi-platforms to sign offline transactions). I dont want to use Electrum or Armory - which are not independent enough - in my opinion. Would you have any insights?

Thanks for your support!