Sorry but I can't really imagine 30 million bitcoins.
Hahaha.
https://www.coindesk.com/us-marshals-successfully-auction-off-30-million-bitcoin/The U.S. Marshals Service confirmed Thursday that more than 3,600 bitcoin sold at auction in January have been successfully transferred to five winning bidders.
An unknown winner received 1,600 bitcoin (worth about $13.4 million at press time), the agency confirmed in an email today, with the remaining buyers receiving 500, 500, 200 and 813 bitcoins (worth $4 million, $4 million, $1.6 million and $6.7 million), respectively.
With the exception of Riot Blockchain, which claimed one of the two 500-bitcoin lots, the names of the winners were not disclosed. Riot voluntarily announced it had received 500 bitcoins shortly after the sale.
Notably, the agency ended up selling 100 bitcoins less than anticipated, a development it said was due to unforeseen technical issues. The agency is now maintaining custody of those assets.
Stepping back, the sale marks the first time since 2016 that the agency has auctioned off bitcoins. At the time, the agency sold 2,700 bitcoins for a profit of less than $2 million.
The market seems to have absorbed these coins without problem - another plus for bitcoin's resilience?
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These coins are likely not on the market, unless they were being bought at a discount there would be no reason to buy them and then dump them on to the market. They're probably sat in some business mans wallets somewhere and will remain there for some time. Also 3600 bitcoin isn't a huge amount for the market to absorb.