Paper  bibtex   

@article{DBLP:journals/corr/abs-2006-03918,
  author       = {Massimo Bartoletti and
                  Stefano Lande and
                  Roberto Zunino},
  title        = {Bitcoin covenants unchained},
  journal      = {CoRR},
  volume       = {abs/2006.03918},
  year         = {2020},
  url          = {https://arxiv.org/abs/2006.03918},
  eprinttype    = {arXiv},
  eprint       = {2006.03918},
  timestamp    = {Fri, 12 Jun 2020 01:00:00 +0200},
  biburl       = {https://dblp.org/rec/journals/corr/abs-2006-03918.bib},
  bibsource    = {dblp computer science bibliography, https://dblp.org}
}