"A" rated books
nitrogensports.eu A+ (2012)

"B"rated books
betcoinsports.com B+ (2013)
jetwin.ps B+ (2013)
bitcoinrush.io B (2013)

"C" rated books)
betbtc.co C+(2014)
cloudbet.com C (2013)
fairlay.com C (2014)
betmoose.com C- (2014)
olebitcoin.com C- (2013)*
predictious.com C- (2013)


"D" rated books
anonibet.com/  D+ (2011)
premiumtradings.com D+ (2014))
directbet.eu/ D

"F" rated books
Asianconnect F ....................accepting deposits but they have confiscated funds from multiple players.
Ball2Win F ..........................accepting deposits. They are under the same license as "F" book gobetgo
BetCas F ............................accepting deposits but they have confiscated funds from multiple players.
BTCBonusBook (2015).......... accepting deposits with no payout history.
Casinoco (2015)...................accepting deposits but not paying out all players.
Coindrafts F (2014)
Webetcoins F (2014
Bitbm F .............................accepting deposits but not paying out all players.
Bitcoinsport F
Bitcoinlivebets F
Coinbet F
Gobetgo F (2013)
Sportbet.im F
StakeBTC F
Blockbet F
Bitbook F

NR
2bet.io (2016)
betinbtc.com
BetVIP - closed 6/12/15
bitcasino.io/sportsbook
coinbet24.com
lunarbets.eu




* longer accepting cash deposits

Maximum grade based upon time in business:

A - 2 years
B - 1 year
C - 3 months
D - 1 month
F - reserved for books that are scams, slow paying or stiffing players