Category Archives: Cryptocurrencies

Testing Binance API with Postman

Clone the repository with Postman Collections and Environments:

git clone

Open the root repository folder:


Ethereum Classic (ETC) stopped mining on GeForce GTX 3GB cards

Today I noticed that ETC does not mine anymore on my HiveOS farm with GeForce GTX 3GB cards:


Binance looses its orders

When I query KAVAUSDT order #561657676 with /api/v3/order?symbol=KAVAUSDT&orderId=561657676&timestamp={{timestamp}}&signature={{signature}} that normally should return

    "symbol": "KAVAUSDT",
    "orderId": 561657676,
    "orderListId": -1,
    "clientOrderId": "ce86e0a9-85a8-4d9b-99b1-b08e227e2464",
    "price": "4.80700000",
    "origQty": "10.00000000",
    "executedQty": "0.00000000",
    "cummulativeQuoteQty": "0.00000000",
    "status": "CANCELED",
    "timeInForce": "GTC",
    "type": "LIMIT",
    "side": "BUY",
    "stopPrice": "0.00000000",
    "icebergQty": "0.00000000",
    "time": 1632183933417,
    "updateTime": 1632184233620,
    "isWorking": true,
    "origQuoteOrderQty": "0.00000000"

I periodically get

    "code": -2013,
    "msg": "Order does not exist."

see a video on YouTube that demonstrates this effect.


How to mine Ethereum on Windows 10 laptop

Determine local IP address by typing ipconfig in Command Prompt:


Periodically get ‘device not responding’ error on my HiveOS rig

Once a 2 or 3 minutes I get the following error in the miner log:

grep -i error /var/log/miner/gminer/gminer.log
Error on GPU6: Device not responding, check overclocking settings

and on the following message on the miner screen:

GPU6: DAG has been damaged, check overclocking settings
Miner terminated, watchdog will restart process after 10 seconds

GPU temperature is about 50-60°C, but looks like the memory chips overheat, because there was NVidia error:


How my trading bot buys the cryptocurrency

I used a simple algorithm a got an interesting effect: the bot often buys at the peaks of the falling price. Below I provided some examples of buying the cryptocurrency on Binance crypto exchange:



My first trade with my simple Binance bot

It calculates the difference between 2.5 hour moving average (MA) and the current price, when the difference exceeds the threshold it buys:


Earned 50$ with some unknown coins on Binance

Coins FIS, BADGER and TORN did 3x, 2x and 2x respectively and I earned 50$ with my trading bot:


Investigating how to find the candles on a price chart

The basic idea is to calculate the difference with 10 minutes (600 seconds) moving and the current price, for example.



We’ll never get our Sparks

Below I provided my dialog with Binance support:

what about sparks?
I mean should I expect them?

Can I know is this previous question or something else please ?

no, it is about Spark airdrop
I held XRP on December 2020

Kindly wait please, we will check and get back to you as soon as possible.

Upon checking, this airdrop of Spark tokens has not been sent yet, please follow our official announcements about this airdrop,
once we will distribute it, we will post official announcement here

Is there anything else I can assist you?

is there some planned date when we'll get some Sparks?

For now have to wait for the announcement since we don't have any planned date.

ok, thanks