Shadowrun Wiki

"and he was hit with a Thor shot before he could escape his hideout."

System Failure p101 says Art "had gone" before the Omega team could get him... presumably this means he did escape his hideout, only to be hit with a thor-shit. --VOLKOV9 19:10, 7 April 2006

The only direct reference to Art and the Omega Team on sf p101 says "ZOG analysis estimated he’d be gone before Omega ground team could be activated". Art hadn't gone, they just figured he would be, so instead of chasing him, they wrecked him from orbit.
"Thor-shit" should be canon slang for that, btw. --obo 01:08, 29 July 2009 (EDT)

Assuming the debt is a Fourth World issue, and by my horrible math, I estimate that Art's ancestor lent the dragon a gold piece worth about UCAS$0.0000000000000000000195 about 7,000 years ago, or about UCAS$.000000000009 about 5,000 years ago. (Adjusted for inflation, of course, and I would love to see that adjustment table.)

Right now, 1/20 oz. of gold, the smallest common gold coinage, is worth about US$47. --obo 01:08, 29 July 2009 (EDT)

If you assume a gold peice is roughly equivalent to a gold doubloon, which is about 6.2 grams of gold, at (today's 2019) price of $41.70 per gram, gives you a Principal Balance of $258.50.  This also assumes that the value of gold is consistant across all of history (this is not the case).  If the typical compound interest formula A=P(1+r)^t with t in years, then solving for t gives us: (ln(34586224739.58)-ln(258.50))/ln(1.01) ~= 1880.5 years. So Art's ancestor gave ol' Dunk a gold peice in 176 AD.  Coins of the time would be the gold aureus, weighing in at about 6.6 grams of gold.  It probably bore an image of Empress Faustina the Younger.