Biblio
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2021. Computationally sound Bitcoin tokens. 2021 IEEE 34th Computer Security Foundations Symposium (CSF). :1–15.
We propose a secure and efficient implementation of fungible tokens on Bitcoin. Our technique is based on a small extension of the Bitcoin script language, which allows the spending conditions in a transaction to depend on the neighbour transactions. We show that our implementation is computationally sound: that is, adversaries can make tokens diverge from their ideal functionality only with negligible probability.