@misc{Riv19f,
  author =       { Ronald L. Rivest },                  
  title =        { {LCS35} Time Lock Crypto Puzzle },
  date =         { 2019-05-15 },
  OPTyear =      { 2019 },
  OPTmonth =     { May 15, },
  venue =        { MIT CSAIL },
  note =         { Talks given at
                   MIT CSAIL Time Lock Puzzle and Time Capsule Opening Event, and VDF Day
                 },
  urla =         { <a href="#Riv99b">Original puzzle</a> },
  urlb =         { <a href="https://dci.mit.edu/vdfday">VDF Day</a> },
  urlc =         { <a href="https://www.youtube.com/playlist?list=PLaXwSyee0z4x2n6nxZo4CCfJ63j9_4IM2">VDF Day (YouTube)</a> },
}