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State

The x/hold module uses key/value pairs to store hold-related data in state.

Holds​

Holds on funds are recorded by address and denom using the following record format:

0x00 | len(<address>) | <address> | <denom> -> <amount>

Where:

  • 0x00 is the type byte, and has a value of 0 for these records.
  • len(<address>) is a single byte containing the length of the <address> as an 8-bit byte in big-endian order.
  • <address> is the raw bytes of the address of the account that the funds are in.
  • <denom> is the denomination string of the coin being held.
  • <amount> is a string representation of the numerical amount being held.

Records are created, increased and decreased as needed. If the <amount> is reduced to zero, the record is deleted.