Up vote this post
Post your answers in the comment section. Correct answers will be up voted. You can answer or comment more than once, only correct answers will be up voted, and 1 incorrect answer will negate all other responses in same comment. So if in doubt, make separate comments for answers.
The longer, harder or bigger the answer, the bigger the up vote
Have fun and ask any questions
For example comment:
1A = whatever (which means the answer to 1 across is "whatever"
3D = Coin (which would mean the answer to 3 down is the word "coin)

ACROSS

3   knowledge of spiritual mysteries     
4   a lite bitcoin wallet    
8   the ease of exchange of a good or commodity for money or another type of goods (added hint: ease with which an asset can be converted into currency )    
10  relating to a town or city and its administration    
12  first cryptographic anonymous digital money 1982     
14  1982 Disney movie    
15  bitcoin blocks not part of main chain    
16  mining algorithm by Adam Back    
17  ______ network, off-chain bitcoin transaction & settlement   
20  equivalent exchange of like commodity or goods   
22  Nick ____? of bit gold   
25  hacking technique 2 wds.     
26  Hal ________ . Bitcoin's #2 man?     
27  Nakamoto's heir?     
29  block #0 2wds.   
31  bitcoin block 32-bit field   
34  _____ tree or binary hash tree   
36  queued bitcoin transactions  
38  smallest fraction of a bitcoin   
41  a quandry    
42  remote bitcoin making    
44  bitcoin block reward cut in half     

DOWN

1   How many millions of bitcoin?    
2   _______ Hanyecz of Bitcoin Pizza Day     
5   It's the generation transaction's equivalent of a scriptsig  
6   mining chip  
7   ______ generals' problem     
9   bobby and charlie    
11  general agreement?   
13  bitcoin network speed    
14  bitcoin's online trade route?    
18  a measure of the mining work needed to hash a bitcoin block  
19  ____ Buterin     
21  average time between bitcoin blocks 2wds.    
23  process of bitcoin mining    
24  created by wei dai   
28  the shiba inu of cryptocurrency  
30  relating to the stars    
32  process of joining two or more things    
33  inform the next of ______    
35  upper regions of space?  
37  early bitcoin exhcange   
39  play or gamble with  
40  nacl2    
43  in a great hurry     
45  hodling NEO can give you this?

The first crossword puzzle seems to have been a success because people commented that they enjoyed it very much. People also enjoyed the Rebus Puzzles too, so I will try to come up with a few more of those for your enjoyment as well.

I will update the puzzle here as the clues get correctly solved