Blockchains host smart contracts for crowdfunding, tokens, and many other purposes. Vulnerabilities in contracts are often discovered, leading to the loss of large quantities of money. Psamathe is a new language we are designing around a new flow abstraction, reducing asset bugs and making contracts more concise than in existing languages. We present an overview of Psamathe, including a partial formalization. We also discuss several example contracts in Psamathe, and compare the Psamathe examples to the same contracts written in Solidity.
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