Products and services using Digital currencies are generally available around 2017
Grader A: hit
Grader B: hit
agrees with A, without seeing its verdict
Audit: confirmed
in the fixed audit sample (D11)
Published: hit
Grader A: hit
Coinbase let consumers buy and sell bitcoin by bank transfer from October 2012 and had one million users in 2014, before the poster's mark.
Test: D37 Horizons: digital currencies buyable and spendable by ordinary consumers by 2019 (earlier counts).
Grader B: hit
Bitcoin could be bought on exchanges (Coinbase from 2012) and spent at merchants (Overstock, 2014) before 2017.
Test: Consumers could buy/use digital currency by 2019 (earlier counts).