Hey, the idea is great, and as you say, there no app today to make this. If these were in my hands i would use coordinates and not a digital map, this way the project doesn't depend on google maps. And you can use a social network to post those coordinates.

For example, a tweet with the next information:


Another option is to make a web page where any user could register and post a place where he leave some BTC.

It might end up not meeting the primary goal which is mainstream adoption if you put up coordinates which are close to impossible to even translate into a specific place.

Phemex's Satoshi-Maze Puzzle comes to mind first. The competition ended without anybody solving it. The puzzle was too hard I am sure there was only a handful who attempted and had fun trying to solve it.

Why not reduce the coordinates to a simple degrees, minutes, and seconds format so that a lot of people will join? But the first few locations would only reveal a clue and another set of coordinates for another clue and coordinates until the prize is found.

I love this idea and would love it to be fully developed .
I remember seeing this thread a while back and it caught my eye.

https://bt.irlbtc.com/view/5216753.0

Is this the sort of thing you were thinking about OP?

I remember one member being quite active in that area a few years ago, and I did my best and found his threads ->

Bitcoin GEOCACHE in Iceland FREE money!! GAME CONCLUDED
GEOCACHE AFRICA 2018 UPDATE: Cache found!!!!!!

I think the idea is very good, and I believe that if there was an application that would be exclusively related to geocache Bitcoin, it could gain great popularity. Everyone knows Pokemon mania when millions hunted virtual little devils everywhere, and I have no doubt that people would be very happy to hunt something that has value like Bitcoin.

Mbitr is posted link which leads to geocaching app, and for start all Bitcoiners can use that app - I have to admit that I am very interested in trying out how it works in practice

The idea is same as the PokemonGO, the mobile game craze in 2016 where you need to go out to look for pokemon, maybe we can use the same internal as this mobile game has.

This is brilliant if comes to life, popularity of bitcoin or any cryptocurrency will increase. Imagine gathering your friends looking of 0.01 btc in your area, looks so fun to me.

It would be just hard if the coordinates happens to be located in isolated places, devs will surely do that 

" Let the treasure hunting begin! "  can't wait to see this announcement

You could always just leave paper wallets with small amounts on normal deposit boxes provided by Geocaching sites.

This way you would probably introduce new people to bitcoin as well as they would be surprised. They would have their smartphones on because they would need that for geocaching and they would probably take a look at this bitcoin thing.

Maybe people who have enough money for a hundred lives on this planet? Millions of dollars or euros are pocket money for someone if he is a billionaire, and in fact only one rich man could make a huge difference if he really wanted to. If we consider another way that involves ordinary little people with small funds, then the power is in the numbers and it doesn’t matter how much someone actually left BTC in some hidden paper wallet.

Recently, someone donated several charities to the forum with 1 BTC each, and it is known that there are a lot of projects worldwide that raise funds in crypto. Faucets pay very small amounts, but just 4-5 years ago anyone can get 0.01 BTC daily from them with help of some refs - and if BTC price is just increase x10 in next 10 years (and will probably be a lot more), each satoshis can be worth maybe 100 times more than today.

Put $100 in your bank account and wait for what will happen in 10 years - take $100 worth of BTC and keep it for the same time - I think the difference will be huge.

Stuff like this will certainly help alot, not just for hunting for Bitcoin but also for buying and selling things in times of serious crisis. But it will need to be done without violating national/environmental laws. I think it'll be great to build such application on a well decentralized system... a system that is based on clear rules

Some sites that give maps for adoption and regulation on bitcoin
https://coinmap.org/view/
https://www.bitcoinregulation.world/

Seems like people are right that it's called geocaching. I am completely unfamiliar with this thing, so it's hard for me to fully understand the situation, and the closest thing I know to it is Pokemon Go. I am sure the hell lot of BTC would need to be spent on this, and the profits are very doubtful (unless you're planning to do it as a charity). But there's also another aspect to that. Bitcoin is mainly in the gray area when it comes to legal status, and according to Wikipedia,
So if anything, it might make the authorities even more hostile to Bitcoin, and this is not what we need. Maybe I'm wrong, but it's just a thing to consider before starting a trend of Bitcoin geocaching. By the way, if you Google 'geocaching Bitcoin' you'll be able to see that some people already tried it.