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docs: note that Execute.amount is u64::MAX for confidential transfers #156

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joncinque merged 2 commits into from
Sep 3, 2026
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docs: note that Execute.amount is u64::MAX for confidential transfers #156

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docs: note that Execute.amount is u64::MAX for confidential transfers
pwsaragossy Aug 25, 2026
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joncinque Sep 3, 2026
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7 changes: 6 additions & 1 deletion interface/src/instruction.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,12 @@ pub enum TransferHookInstruction {
/// 5. ..`5+M` `[]` `M` optional additional accounts, written in
/// validation account data
Execute {
/// Amount of tokens to transfer
/// Amount of tokens to transfer.
///
/// When Token-2022 invokes a hook from a confidential transfer, the
/// amount is not known to the token program and `u64::MAX` is passed
/// as a convention. A hook that enforces amount-based policy must
/// handle this sentinel explicitly.
amount: u64,
},

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