Business to Business

Barter Industry “Trade Dollars”

Local/Regional

Bristol Pounds, Ithaca HOURs, Banco Palma

Time

Time Dollars, Credits AKA “Time Banking”

Social Purpose

Nu-Spaarpas, HERO Rewards “Merits”

Loyalty

Frequent Flier Miles, Coffee Cards

Reputation

Ebay, Amazon Seller Ratings

Cryptographic

Bitcoin, Ripple, Ethereum