LoadChequebook loads a chequebook from disk (file path).

NewChequebook creates a new Chequebook.

NewInbox creates an Inbox.

NewOutbox creates an outbox.

ValidateCode checks that the on-chain code at address matches the expected chequebook contract code.

Cheque represents a payment promise to a single beneficiary.

Chequebook can create and sign cheques from a single contract to multiple beneficiaries.

Inbox can deposit, verify and cash cheques from a single contract to a single beneficiary.

Outbox can issue cheques from a single contract to a single beneficiary.

Backend wraps all methods required for chequebook operation.