within the ticketing industry using blockchain technology to create immutable digital tickets, replacing or complementing their paper counterparts. The entry of NFT ticketing has changed the resale market and brought about a dramatic change in the funding sources for a segment of individual artists and groups. Coach(Bus) ticket A coach ticket is a document created by a coach (bus) operator or a travel agent to confirm that an individual has reserved a seat on a coach. This document is then used to obtain travel on the operators coach fleet. Only with this ticket is the passenger allowed to board the coach. A paper ticket is only good for the coach operator for which it was purchased. Usually the paper ticket is for a specific journey. It is sometimes possible to purchase an 'open' ticket which allows travel on any coach between the destinations listed on the ticket. The cost for doing this is often greater than a ticket for a specific journey. Some tickets are refundable. However the lower cost tickets are usually not refundable and may carry many additional restrictions. It is now common for a traveller to print out tickets online and use these on coaches instead of having tickets sent to them in the traditional way. Many coach operators use this system to save costs; some allow a text from the operator to act as a ticket with a unique reference number. Pass A pass is a special ticket, representing some subscription, in particular for unlimited use of a service or collection of services. Sometimes the pass replaces the tickets, sometimes it entitles the holder to free tickets. In the latter case, typically both the pass and the ticket has to be shown at the ticket check. Alternatively, there is the discount pass, for services such as those above: for a fee per unit time (or as a benefit on other grounds) one gets a discount on each purchase. Alternatively, a multi-use ticket (either valid a limited time, or indefinitely) may provide a discount. For example, a pass for entering a cinema 6 times within a year may cost the price of 4 or 5 tickets. A multi-use ticket may or may not be personal. If not, there may be a limitation to the number of people who can use the same multi-use ticket at the same time. Collecting (hobby) After its original use, tickets can serve