# Distributions (https://docs.tsamara.xyz/docs/distributions)

How the periodic distribution is calculated, paid, and kept from being paid twice.

## What a distribution is
A sukuk does not pay interest. The series has an **expected profit rate**, set by its structure,
and pays an expected periodic distribution out of what the underlying assets earn. It is an
expectation, not a guarantee.

## The amount
For the demo series: $10 a unit, 5.20% a year, paid twice a year. One unit receives $0.26 per
period, and 20 units receive $5.20. The math is done in whole base units of the payment token
and rounded down, so the treasury can never pay more than the total owed.

## How it is paid
The operator names the period, for example `2026-H2`. The API reads the holders from the
indexer and pays them from the issuer's treasury in batches of eight payments per transaction.

Each batch carries a memo naming the series, the period and the batch number:

```
tsamara:distribution:GSD31:2026-H2:0
```

Before sending a batch, the API looks for its memo on the treasury's history and skips the
batch if it is there. Paying the same period again therefore pays nobody twice, and a run that
failed halfway can simply be repeated.

> **info:** If holdings change between a failed run and its retry, the batch boundaries can move. A series
larger than one batch still needs a record-date snapshot, which is not built.