plutus | Rails Engine which provides a double entry accounting system | Application Framework library

The 400 (BAD REQUEST) indicates that there is a communication between Your Browser+JS and the Flask app.

I suspect an issue between The Flask App and Postgres.

Your Postgres has to be in the same network as you application server (the service you call "fortweet" in your docker-compose. Plus, you have give it a hostname so the app server can resolve it internally.

So apparently, solution was simple but difficult to find.Here is how it worked :

1. close all projects in intellij, don't close IDE, just all projects.
2. delete the .idea/ folder from the project which was getting stucked.
3. open the same project in intellij
4. do File -> invalidate caches and restart
5. done

A few problems in your code:

• You're not handling the Plutus level of your JSON in your code.
• You're acting as if there can be multiple nodes in the snapshot, but you're actually loading a very specific node. So you don't need to loop over getChildren().
• Since you're loading the title node only, the result is not a MyTasks.

To load only the title of the one task, you'd do something like:

As you state correctly, the reason why startWatching is needed has to do with the capabilities of the wallets that Plutus contracts have access to.

In the first iteration of the emulator we went with the conservative assumption that Plutus contracts would only be able to do forward-looking queries of the blockchain state. That is, we assumed it would not be possible to scan arbitrary sections of the blockchain because of resource limitations of some of the wallets. The effect is that all contracts written against this restrictive wallet interface have to call startWatching before they can do anything interesting.

When the emulator was implemented, there was no specification of the wallet capabilities that Plutus contracts can expect - in fact, one of the motivations for building the emulator was to help us write the specification. And it's quite likely that the current, restrictive interface (forward-looking queries only) will be replaced by something more powerful so that the startGame endpoint won't be necessary anymore.

You could try using new ISODate("2017-03-17 11:59"). I know it is a little cumbersome, but this is the only date value that is guaranteed to work across all versions of Robomongo and MongoDB.

Further reading -

1. https://github.com/Studio3T/robomongo/issues/614
2. https://github.com/Studio3T/robomongo/issues/477

I think you want to substitute the values of variables $from_date and $to_date in the link. Variables are not substituted in single quoted strings. Try replacing single quotes with double quotes:

You seem to be misunderstanding the purpose of the 2^160 bit range.

Each standard bitcoin address is tied to the HASH160 of the public key. A HASH160 is 160 bits long, which is why your search space is 2^160. If you are able to find two private keys for which the HASH160 of the public keys are equal, any of those two private keys can spend coins sent to that address.

Searching a smaller space does not make sense since you are no longer searching for bitcoin addresses. If you just want to search random hash functions, then you simply need to replace RIPEMD160 hash function with another one that has an output in whatever bitsize you wish to search.

Note that if you do that, the rest of the code talking about checking balances etc. will be of no use, since your output will no longer be a bitcoin address.

No, there is not that interface.
You have to recalculate index or use a Proxy:

qualifyingLength below is the length in question. data is the input array of String.