Lustig, H. N. and S. G. Van Nieuwerburgh (2005), “Housing collateral, consumption insurance, and risk premia: An empirical perspective”, Journal of Finance 60 (3), 1167–1219.
The network’s miners then check the hash to see if the unconfirmed block is valid. This is a time for celebration among crypto miners because the proof of work has finally been completed. From the user's perspective, this essentially implies that the sender's cryptocurrency transfer to the receiver has been confirmed and will be added to the blockchain as part of the block.

And while proponents tout cryptocurrencies as potentially lucrative alternative investments, few serious financial professionals view most coins — with the important exception of Bitcoin and a few others — as suitable for anything other than pure speculation.
One investor who wasn’t deterred was Barstool Sports Inc. founder Dave Portnoy. In May, he announced to his 2.6 million followers on Twitter that he’d bought US$40,000 worth, despite saying that SafeMoon could be a Ponzi scheme, a scam in which early investors’ returns are paid with funds coming from later buyers that collapses when new deposits dry up or too many people try to cash out.