List of OTC Desks / Brokers / Block Liquidity Providers

Akuna Capital
Altonomy
Athena
B2C2
BCB Group
BEQUANT
BitBay
Bitbuy
Bitcoin Suisse
BitcoinToYou
BitPanda Plus
BitQuoine OTC
BitSTAMP
BitStocks
BitTrade
Bittrex
Bity
BlockEx
BlockFills
BloomX
Brevy
Caleb and Brown
CatchBitcoin
CBANX
Chain Partners
Circle Trade / Poloniex
CMT Digital
Coin Cloud
CoinAll
Coinbase
Coinbase Prime (OTC coming soon)
Coinchange
CoinCheck
CoinCola
CoinField
CoinHako
Cryset
DAM/Digital Asset Management
DigitalMint
DRW / Cumberland
DV Chain / DV Trading
Einstein.Exchange
Enigma Securities
FBG Capital
FTX OTC
Galaxy Digital
Galois Capital
Gemini ← Access to daily cross auction as well
Genesis Global Trading
GSR Markets
Hehmeyer Trading + Investments
HitBTC
HiveEx.com
HodlHodl
Huobi OTC
i2Trading
IBC Group
Investors Of Crypto
itBit
Jump Trading
Kaiserex
Kenetic Capital [Inactive]
Key Digital
Koi Trading
KoinBros (added April 2019, per their request)
Kraken ← Inquire about Dark Pool
L2B Global / Tenbagger / HodlHodl [Multisig contract]
LGO Markets
Llama Brothers
Lumentrades
Octagon Strategy
ORTUS (Bithumb)
OSL
QCP Capital
RockitCoin
SFOX
Shift Markets
SigOne Capital
SJMX Blocks (San Juan Mercantile Exchange)
Tilde
TrigonX
Unocoin
Wyre
Xapo
XBTO Trading(U.S.), XBTO International
Yellow Card OTC