This makes me very happy that I am in the sub-10K mark and did not receive any notice of any kind;  from coinbase or the IRS....

On top of which;  My actual income last year was pretty pathetic...  near zero as I was only well enough to resume my work as a surveyor for around 2.5-3 months and got a 100% refund.

This year;  I have only made one GDAX sale of BTC, and that was right near 10K, I think I sold .005.... and put that directly into a buy order at around the 6K mark for the chance a flash-crash happens.

I have however transferred around or exactly .05 multiple times back and forth to GDAX and back to my coinbase wallet because of the market movements, sitting ready to hit the button if the market did what I thought might happen (but didn't).  I only keep at-most .5-.10 in coinbase;  even they can go insolvent and I am highly weary of that to this day.

I wonder what the difference between the records of pro and GDAX are/were;  I haven't looked into the details that separate them, but it irks me knowing I sold at most $300USD to cover rent twice;  but the reports of my wallet/total amount I had in that time was in the magnitude of multiple thousand... which just doesn't add up in my eyes (it was pro back then), and those sells/micro buys were for literal gains of maybe 10K satoshi each, or just for a selloff to be able to pay rent.... yet coinbase said I had multiple thousands in value when I personally know I had .5 in my offline personal wallet not associated with them.  I can see the old PRO buys/sells in my GDAX history as well (from pre-2017).

I was very uneasy about any exchange back then (still weary because of the MountCocks fiasco), and only sent to coinbase when I wanted to spend it; and the Tx fees were very small (very pre-2017).

So overall, this is why I am lucky I am 100% under the radar, and a lot of it was traded F2F for other assets back then so I could flip those assets and equalize my rent concerns....   Being out of work;  I had to make ends meet somehow, and with the most amount of profit on my end.