policy-fixed-issuance

Description

This policy ensures that a token follow an issuance spec:

Precision
Minimum mint amount
Total maximum supply

It could make sense to associate with policy-disable-burn. This policy is not compatible with policy-non-fungible

This policy allows easy creation of poly-fungible-tokens.

Examples:

A token with a total supply of 1.0, which can be divided into 100 parts:

Precision = 2
Minimum mint amount= 0.01
Max supply = 1.0

A token with a total supply of 41.0 which can be divided into 41 parts.

Usually, a full token is represented by a supply of 1.0. But here with 41 shares, it would be impossible. That’s why we switch to a precision of 0, and shares represented by a unity.
Precision = 0
Minimum mint amount= 1.0
Max supply = 41.0

Implemented hooks

(defun enforce-init)

(defun enforce-mint)

Input data structures

fixed_supply

Handled by (create-token)

(defschema fixed-issuance-msg-sch
 max_supply:decimal
 min_mint_amount:decimal
 precision:integer
)

External functions

Nope

View functions

get-issuance-spec

token-id string → object{fixed-issuance-sch}

Return the issuance specification of a given token.

(use marmalade-ng.policy-fixed-issuance)
(get-issuance-spec "t:r-4jQUrZWpYfEqq_iGvBn1ofgCLPoh2ZfG5kfAVX2KM")
  > {"max-supply":1.0,
     "min-mint-amount":0.1}