sCrypt: Nine Smart Contract Development Best Practices
ID: 8c111fe5-c986-538d-b3c0-9a34dbd10191
STIX ID: report--8c111fe5-c986-538d-b3c0-9a34dbd10191
Feed Name: CertiK Blog
### Executive Summary This report explains sCrypt smart contracts on Bitcoin-style UTXO chains, details the Back-to-Genesis (B2G) problem that enables replay and man-in-the-middle token forgeries, and provides recommended mitigations and a checklist (e.g., GenesisID, two-step backtrace validation, script/hash integrity checks, SigHash selection, and UTXO input-proof validation) to harden fungible and NFT token implementations.
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