Just a little research! Would you pay to advertise in telegram groups?

Basically, you register in the platform, add some btcs in order to receive credits, choose in what telegram groups you would like to advertise and start it..

Every group with its own prices, rating and meta info would be shown in the platform (number of users, activity, etc..)

Platform would also shown detailed ads performance

Note that each group owner would be responsible to set prices for advertising.

Users that run campaigns would be able to rate each group.. So it would be a kind of self regulated ad market for telegram groups..
Groups with better reputation would be able to set higher rates while new ones would be able to set lower rates in order to gain reputation.

No fiat involved

Does it make sense at all?

I am syncing a testnet node right now because I am in a hurry to test an application that uses the node's rpc.

But I would like to let this web app running calling rpc on testnet while the mainnet is synchronizing, in the same computer..

I would have tested it already, but the testnet is still syncing.. have some one tried this before? if yes, would the testnet daemon make the mainnet daemon synchronization a lot more slow?

I was taking a look here: https://bitcoin.org/en/full-node and saw a minimum requirement of 200 GB of space,
but looking here: https://www.blockchain.com/charts/blocks-size I see that block chain size is getting close to 300 GB

what is the minimum free space required? and what happens with the server if the block chain size gets bigger than the free space we have in the server?

Lot's of web wallets claiming to be non custodial but how do they do this? they usually create a seed and mnemonic pass..
Do they sign the transaction in-browse then broadcast the signed tx for a external server?

closed

Hello, my name is Mark and I am a python developer.

I will provide programming services ranging from python bots to full featured django websites.

Since I have no trust yet, I will be creating projects first and just when it is done we talk about money.. but it limits me into not taking big projects.. I am a full time dev already but want to migrate to freelancing, so don't expect your project being made really fast.. however,  I will be offering a discount for the first projects.

Here is some general info about how it works:

Rates: 25$/h (this can be less, and it is fixed. I give you an estimated time and that's the price you will pay once it is done.. no more or less.. also this price is the discounted one.. it will increase over time)

Payments:  Pay once it is done, in bitcoin or payoneer

Available hours: 4hrs a day

Deployments: depends on the project.. I am not the devops guy but for small projects, it can be deployed on cheap VPS servers.. with secure containerized images.. However, it does  not have autoscalling nor some managed database features like sharding or replication

For mid to big projects, it will be on aws (elastic bean stalk with rds). Even for small projects it is a good choice, because you can use the 12 months freetier which has generous limits.

Contacts: you can sent me a pm here or in telegram https://t.me/cr4zyd3v

Hey guys.. While I can see this happening on exchanges I was not able to see any topic regarding this methodology..

Usually, From what I could see in many posts, HFT bots search for inefficiencies around market orders and when the bot spots an opportunity, it executes the multiple triangular transactions to get a small %.. However, it is hard to make it in a profitable way due to its competition..

Now, in lots of exchanges out there I can see something like a book war, which make orders being put and removed in order to get the best opportunities..
I am going to test this out by this weekend and see if it works by coding a bot for kucoin.
The logic is something like this:

There are coin A, B and C
lets suppose that B and C are stable currencies just for better explanation
Also, let's not consider fees

So in a random exchange we have the pairs A/B, A/C  and B/C

A/B bid: 0.99  ask: 1.00
A/C bid: 0.98 ask: 1.00

Ok, so if you want to buy 1 of A you have to give 1 of B or C
If you buy and sell it instantly, the best you will get for it is 0.99 of B or 0.98 of C which means a loss trade

What I am going to test is a bot that looks all the time for make positions that worth to be placed

For example: it must be placed close to the book frontier, so it can be fulfilled in a easier manner
The closer of the book frontier, the better the chances to get an order fulfilled but the lower is the % made..

So in the above example the bot would place an bid order around 0.981 and if it gets fulfilled, it could be instantly sold for 0.99 in the other pair

Note that it would not work if it got executed on the market price (taker)..

So here are some facts:
- It is not supposed to make big amounts of money because as you can see, it will depend on low volume trades, as usually it is on book spread area..
- It also depends on the 'lucky' factor because the bot must place the order and get lucky enough to have its order fulfilled before someone puts another order ahead of it (at 0.982 for example..)
- it does not depends of big amounts of money to work.. In theory, it is easy to make 100% of 10$ but not even 0.1% of 100000$ (in a unique order placement)

If you did not know about it, well.. hope you have learned something and let me know what you think!

I am pretty sure that lots of people use it.. Just go in any exchange and take a look on orders with same size on book borders (between ask and bids)

Also, if you have tried or run a bot like this, tips and thoughts are appreciated!