Publish exchange offer for
CurrencyType.EXCHANGEABLE
currency
Parameters
- currency - currency id of an active currency
- buyRateNQT - NXT amount for buying a currency unit specified in NQT
- sellRateNQT - NXT amount for selling a currency unit specified in NQT
- initialBuySupply - Initial number of currency units offered to buy by the publisher
- initialSellSupply - Initial number of currency units offered for sell by the publisher
- totalBuyLimit - Total number of currency units which can be bought from the offer
- totalSellLimit - Total number of currency units which can be sold from the offer
- expirationHeight - Blockchain height at which the offer is expired
Publishing an exchange offer internally creates a buy offer and a counter sell offer linked together.
Typically the buyRateNQT specified would be less than the sellRateNQT thus allowing the publisher to make profit
Each
CurrencyBuy
transaction which matches this offer reduces the sell supply and increases the buy supply
Similarly, each
CurrencySell
transaction which matches this offer reduces the buy supply and increases the sell supply
Therefore the multiple buy/sell transaction can be issued against this offer during it's lifetime.
However, the total buy limit and sell limit stops exchanging based on this offer after the accumulated buy/sell limit is reached
after possibly multiple exchange operations.
Only one exchange offer is allowed per account. Publishing a new exchange offer when another exchange offer exists
for the account, removes the existing exchange offer and publishes the new exchange offer