"taker_side_sell" Explained

For Centralized Exchange(CEX) taker_side_sell takes the value of true when a taker's sell order fills a maker's buy order and false when a taker's buy order fills a maker's sell order.

For Decentralized Exchanges (DEX) using Automatic Market Maker (AMM) protocols, the liquidity pool contract is considered the maker. The entity executing a transaction against the liquidity pool is the taker.

If an exchange does not appear below, it can be assumed that all data we provide is normalized correctly.

For exchanges where we were unable to confirm as reporting data from either a taker or a maker's perspective, we have included the notation mapping from the exchange's trade direction field to our taker_side_sell field. This is necessary so that researchers who want to further study trade direction can make their own conclusions. For exchanges that classify trade direction differently or exclude the field entirely, we also include the notation mapping and a short explanation for how their variable differs.

Furthermore, there are some trades of the Australian Exchange Independent Reserve, where we cannot decide if it is the taker buy or taker sell. As such, it is the only exchange that has 3 values, which are true, false and unknown, in the field taker_side_sell.

Finally, we have made a couple of errors in classifying exchanges as "maker" or "taker", typically early on in the process of developing taker_side_sell. Rather than switch our trade reporting after years of data collection, we have simply marked exchanges where the inverse of the notation stated should be applied. For these exchanges, researchers should be aware that when taker_side_sell: false, the inverse should be assumed.

Unconfirmed, Misclassified or Absent Trade Direction Field

Exchange	Exchange Notation	Kaiko taker_side_sell: true equivalent to:	Comment
BTCBox	"type": "buy" or "sell"	inverse notation: "type": "sell"	Inverse, but confirmed perspective from exchange.
Liquid (Quoine)	taker_side: "buy" or "sell"	inverse notation: taker_side: "buy"	Inverse, but confirmed perspective from exchange.
Bithumb	"type": "bid" or "ask"	inverse notation: "type": "bid"	Inverse, but confirmed perspective from exchange.
Coinone	"is_ask": "0"(if seller is taker)/"1"(if seller is maker)	inverse notation: "is_ask": "1"	Inverse, confirmed from exchange but slightly different notation format
Bitstamp	type: 0 (buy) or 1 (sell)	type: 1	Unconfirmed perspective from exchange
Bit-Z	"s": "buy" or "sell"	"s": "sell"	Unconfirmed perspective from exchange
EXX	type": "buy" or "sell"	type: "sell"	Unconfirmed perspective from exchange
CEX.io	type: "buy" or "sell"	type: "sell"	Unconfirmed perspective from exchange
Yobit	"type": "bid" or "ask"	"type": "bid"	Unconfirmed perspective from exchange
itBit	None	Always returns true	No buy/sell field
Korbit	None	Always returns null	No buy/sell field
Coinflex	None	Always returns null	No buy/sell field
Independent Reserve	"Side": "Buy" or "Sell"	"Side": "Sell"	Some trades have "Unknown"
AsiaNext	None	Always returns false	No buy/sell field provided