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Title: Offline transaction - generate RAW transaction Post by: Scaccomatt0 on August 15, 2016, 04:38:13 PM Let have the following scenario:
1- wallet A online 2- full synced wallet A 3- bring the wallet A offline 4- create a RAW transaction from wallet A 5- copy/share the raw transaction from wallet A 5- use another wallet B online 6- paste / spread the RAW transaction from the online wallet B Questions: 1- is it possible to generate a RAW transaction even if the wallet is in offline mode and not synced? I think so. 2- Wallet B online can spread the RAW transaction provided by someone else? I think so. 3- while the wallet A is offline, if I spent some BTC from another online wallet and using output that I want to include in my RAW transaction, the RAW transaction is generated correctly, but will be invalidated (attempt of double spent?). 4- Security issues? Is it possible to generate offline transaction with a mobile wallet (Ie. Android app)? thanks Title: Re: Offline transaction - generate RAW transaction Post by: DannyHamilton on August 15, 2016, 05:56:25 PM 1- is it possible to generate a RAW transaction even if the wallet is in offline mode and not synced? Yes, as long as you know which transaction outputs you want to spend. 2- Wallet B online can spread the RAW transaction provided by someone else? Yes. 3- while the wallet A is offline, if I spent some BTC from another online wallet and using output that I want to include in my RAW transaction, the RAW transaction is generated correctly, but will be invalidated (attempt of double spent?). Correct, if you have already spent the output in a transaction that is already confirmed then all peers will reject the new transaction as invalid due to the attempt of double spend. 4- Security issues? Keep your keys safe and don't share signed transactions that you don't want broadcast. Is it possible to generate offline transaction with a mobile wallet (Ie. Android app)? I'm not aware of any mobile wallets that have that ability built into them. thanks You're welcome. Title: Re: Offline transaction - generate RAW transaction Post by: Scaccomatt0 on August 15, 2016, 06:36:07 PM 1- is it possible to generate a RAW transaction even if the wallet is in offline mode and not synced? Yes, as long as you know which transaction outputs you want to spend. 2- Wallet B online can spread the RAW transaction provided by someone else? Yes. 3- while the wallet A is offline, if I spent some BTC from another online wallet and using output that I want to include in my RAW transaction, the RAW transaction is generated correctly, but will be invalidated (attempt of double spent?). Correct, if you have already spent the output in a transaction that is already confirmed then all peers will reject the new transaction as invalid due to the attempt of double spend. 4- Security issues? Keep your keys safe and don't share signed transactions that you don't want broadcast. Is it possible to generate offline transaction with a mobile wallet (Ie. Android app)? I'm not aware of any mobile wallets that have that ability built into them. thanks You're welcome. you just confirmed my knowledge. I can keep brainstorming my idea. Title: Re: Offline transaction - generate RAW transaction Post by: MyBTT on August 19, 2016, 03:25:37 AM I'm guessing you're trying to find a way too automate cold storage spending? Correct me if I'm wrong, but isn't that impossible?
Title: Re: Offline transaction - generate RAW transaction Post by: vasigap on August 19, 2016, 07:45:24 PM I'm guessing you're trying to find a way too automate cold storage spending? Correct me if I'm wrong, but isn't that impossible? The off-line automation isn't exactly what the air-gaped usb/wallets and stuff do ?(Correct me if I'm wrong please :) ) |