This post records the history of platinum coin seigniorage in the blogosphere through the debt ceiling agreement on August 2, 2011. Its purpose is to correct errors in the record about the history of this idea appearing on mainstream blog posts by Joe Wiesenthal, John Carney, and Brad Plumer, during the past week. The idea of using coin seigniorage, the profits made from minting proof platinum coins, depositing them at the Fed, and receiving electronic credits in return, to remove the need for issuing debt, and so to always stay under the debt ceiling is due to a commenter (and occasional blogger) on economics and politics blogs whose screen name is beowulf (Carlos Mucha). Beowulf’s first comment on Platinum Coin Seigniorage (PCS) was on Brad Delong’s site on July 6, 2010 (h/t Cullen Roche, 01/05/13). But, the first comment of his I noticed on PCS was at New Deal 2.0. Unfortunately, when The Roosevelt Institute redid its New Deal 2.0 site, it wiped out the record of beo’s comment. However, I quoted his ND 2.0 proposal in a post on November 12, 2010 discussing a possible Government shutdown due to the debt ceiling. I cross-posted this at Correntewire too where beowulf commented further on the platinum coin option.