A bitcoin is seen in an illustration picture taken at La Maison du Bitcoin in Paris, France, June 23, 2017. REUTERS/Benoit Tessier/File Photo Acquire Licensing RightsNov 14 (Reuters) - Bitcoin miners are making hay while the sun shines. "You're seeing a lot of urgency to plug rigs in ahead of the halving," said Gregory Lewis, analyst at brokerage BTIG that covers the 13 biggest U.S.-listed bitcoin miners. That means miners are having to use more and more power and speed to crack the complex maths puzzles that earn them a bitcoin. "It's too early to say if all bitcoin miners are out of the wood," said Ludovic Thomas, portfolio manager at Swiss-based Criptonite Asset Management that invests in digital assets.

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Persons: Benoit Tessier, Gregory Lewis, Bitcoin's, Morgan, William Szamosszegi, Matteo Greco, It's, Ludovic Thomas, Medha Singh, Lisa Mattackal, Vidya Ranganathan Organizations: La Maison du, REUTERS, U.S, Fineqia, Central, Swiss, Management, Thomson, Reuters Locations: La, Paris, France, J.P, Bengaluru