Tool to sign offline a specific bitcoin raw unsigned transaction

hi thank for your project I have more than 4+ years of experienced in crypto currencies and i m doing trading in most popular exchange and trading site like poloniex, yobit, livecoin, binance etc. I have must good experienced in blockchanin technologies as well. i would able to help you in any situation with my proper knowledge let chat more on this project  waiting for your response thank you

Hi, Try out some efficiently delivered article for block chain. The work will be done in a day or two. I would also proceed to work on charts, comparisons and graphs in order to make creative decisions for your research blog post. I have written several similar posts in the past, all with a positive review and rating. I believe I can generate a creative, an original, yet professional blog post on your research subject. Regards, Garon Helton

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This can done through BitcoinJ library. I already have experice of it. i also make hardware wallet . and many bitcoin wallets

Greetings, Cryptocurrency experienced here. I can build your application as you mentioned in project description. I am an independent and professional developer holding 100% completion rate. I am highly interested about your project, Please knock me for a quick discussion.