SOS Limited (SOS) stock surges 22% after the company said it expects to generate at least 41 bitcoin (BTC-USD) and 909 Ether (ETH-USD) in Q1 2021 after mining its first bitcoin on Feb. 24, 2021."Our output should grow in future quarters as we receive and install our third batch of mining rigs and have a full quarter of operations for our current rigs," SOS Chief Financial Officer Steven Li said in at statement.The company installed its second fleet of 5,000 mining rigs and expects its combined fleet to have the capacity to calculate an average of 353 Peta-Hashes per second (PH/s) for mining bitcoin and 707 Giga-Hashes per second (GH/s) for mining Ether.Its board also commissioned an independent review of the company's cryptocurrency mining activities. As part of the review, payments from multiple mining pools were traced to SOS through the public bitcoin and ETH blockchain ledgers.Recall that in February, short seller Culper Research said