The servers use uPhoton (microPhotons). 1 uPHO is equal to 0.000001 Photon. 1,000,000 microPhotons are equal to 1 Photon.

If you want to be paid in a cryptocurrency other than Photons the current Photon to cryptocurrency ratios for CS:GO are:

1 uPhoton is equal to 0.00000001 Blakecoin.
1 uPhoton is equal to 0.00000001 BlakeBitcoin. 
1 uPhoton is equal to 0.00000001 Electron. 
1 uPhoton is equal to 0.00000001 UniversalMolecule. 
1 uPhoton is equal to 0.00000001 Lithium. 

 

Kill Awards

All submachine guns award 300 uPhoton per kill, except the P90 which awards 150 uPhoton in per kill.
All shotguns award 450 uPhoton per kill.
All knives awards 750 uPhoton per kill.
All pistols award 150 uPhoton per kill, except the CZ75-Auto which awards 50 uPhoton per kill.
All rifles award 150 uPhoton per kill, except the AWP which awards 50 uPhoton per kill.

 

Rounds

In the first round, also known as the pistol round, both teams start with 1 uPhoton.
The winning team receives 3250 uPhotons by a time win or team elimination.
The winning team receives 3500 uPhotons by winning through a bomb defuse or a bomb detonation.
In hostage maps, the winning team receives 3000 uPhotons for eliminating all enemy players.
If the CTs rescue a hostage, they receive 2900 uPhotons for a hostage rescue round win and an additional 600 uPhoton team reward for rescuing a hostage.

 

The losing team receives:

1400 uPhotons after losing the first round
1900 uPhotons after losing 2 rounds in a row
2400 uPhotons after losing 3 rounds in a row
2900 uPhotons after losing 4 rounds in a row
3400 uPhotons after losing 5 or more rounds in a row
If Terrorists were able to plant the bomb but lose the round, all Terrorists receive an 800 uPhoton bonus in addition to the values above.

 

Penalties
When a player injures hostages, the player will receive a -30 uPhoton penalty for every point of damage dealt to the hostage.

Objectives
Defusing or planting the bomb awards 300 uPhotons for the individual. The bomb can be planted after winning the round to get the bonus.
Picking up a hostage awards 600 uPhotons for the whole team.

Cheaters
Cheating is strictly forbidden, if you suspect another player of cheating report the player to game admins.

Stats Calculations
A new player has 1000 points. Every time you kill another player or bot, you gain a certain amount of points depending on a) the victim's points rating, and b) the weapon you used. If you kill someone with a higher points rating than you, then you gain more points than if you kill someone with a lower points rating than you. Therefore, killing newbies will not get you as far as killing the #1 player. And if you kill someone with your knife, you gain more points than if you kill them with a rifle, for example.

When you are killed, you lose a certain amount of points, which again depends on the points rating of your killer and the weapon they used (you don't lose as many points for being killed by the #1 player with a rifle than you do for being killed by a low ranked player with a knife). This makes moving up the rankings easier, but makes staying in the top spots harder.

Specifically, the equations are:

 Killer Points = Killer Points + (Victim Points / Killer Points) × Weapon Modifier × 5

 Victim Points = Victim Points - (Victim Points / Killer Points) × Weapon Modifier × 5

You can find the current weapon modifier values by clicking here.