This immutable NFT contains the BCH voucher amount, used in purchasing the product from the merchant it is linked to. During collection, this NFT gets sent to the vault contract. The purpose of this is to secure the lock NFT from getting burned and spent — it will only be spent if and only if the key NFT is also in the vault too.

BCH amount	Contains the BCH voucher amount embedded that is used in purchasing a product.
Capability	immutable
Commitment	https://www.notion.so/PurelyPeer-7214628c587c4778b429353684f8bf0c?pvs=21.