XSPEC is a great coin, price started i believe was about 0.02USD and still holding on today to more than $0.30. were they the first to introduce that Proof-of-Anonymous-Stake? not sure what it really meant though but even with DASH and few others, there is no mandatory to submit documents to stake coins.
XSPEC didn't end up being first with stealth staking, as PIVX got there first. But because of the Zerocoin vulnerability, they had to disable their privacy features. In the meantime, XSPEC delivered PoAS (stealth staking) on a trustless setup. Working great ever since. I love my untraceable staking rewards.