I'm sorry but it's simply not worth it for me to write a proposal without knowing who you are, what your budget is, what your requirements are, etc. I have written a block explorer internally for
https://ColdMonitor.com and have the required knowledge / experience to make this happen but I need more info. If you are really serious about this, I'll help you write a requirements document for you for 1 BTC that you can send to potential developers. If I had to bid on this project without any further information, I'd say around 3 months work (or ~24,000$).