A quick list of recurring terms and what we mean by them.


Accounts are the Solana construct for the data that lives on the chain. Virtually everything on the Solana blockchain is an account, including wallets, programs (smart contracts) and tokens. All accounts have an identifier, which is a public key. In the case of wallets, these are ‘real’ public keys with a matching private key, in other cases the key is derived (which is called a Program Derived Address).


A specific type of staff member, who is performing. Often the star of an event.


The virtual representation of a user. An avatar can be used to move around the Metaspace and interact with it. Consumers have avatars, but so do staff members and performing artists.


A database of transaction history. In its simplest form, it is essentially a list of transactions with a source, destination and amount. These days, more complicated transactions take place, including data storage and instruction processing. In all cases, there is a network of nodes that verify incoming transactions and add them to the database.



An item that is part of a collection (wearables, avatars, expressions, mods, placeables).


A group of items, tied to a brand and/or an event.


Any user who attends an experience.


In the Solana context, minting is just an unnecessarily confusing term for creating NFTs. We therefore refer to it as creating. A Creator can create an NFT and sell copies of that NFT.


Supporting staff for an artist during an event.



Decentralized Autonomous Organization


(Digital Multiplex) data communication. Direct control of event devices via external input.


A show taking place inside a Metaspace, which runs automatically or manually by staff.

Event Manager

The YOM Events System, which controls events from outside the Metaspace.


The Metaspace and its Events, hosted by a Brand. A Brand establishes itself in the Metaverse by hosting an Experience.


Consumers can select Collectibles to favorite on the Marketplace, which can be saved to buy later.


Fees on the Solana blockchain consist of two parts: Computation unit fees and storage rent. All transactions consume computation units and these are compensated with the fee. All accounts consume storage space, for which rent is paid. Accounts can be made rent exempt by depositing 2 years worth of rent on the account.

GDPR compliant:


See Immutable


The sum of the Metaspaces and the infrastructure behind it.


Data that by design can no longer change. Consider a piece of data being represented by a unique "summary" (Hash) which is used as public address for finding that data on a system.


The total of all items that a user owns. Represented in the Metaspace with a UI element.


Any collectables, tickets and passes.


Storage of items that by design of the system cannot (immutable) on a network that has no "main node" (decentralized). Used for storing NFT metadata and related files (images, 3d models).




Scripted events in Unreal. Not to be confused with Events in Metaspaces.


A place in the Metaverse where brands and users can trade items. Brands, Metaspaces and events all have dedicated pages on the marketplace to establish presence.

Master edition

Any Metaplex NFT begins with a Master edition which is created by a Creator (in our context, typically a Brand). One or more Editions of that Master edition can then be sold through the Marketplace. After initial sale is done, those Editions can also be sold or traded between Consumers directly.


A virtual space where events can take place. Metaspaces can be sold and rented.


Metaplex, at its core, is a set of programs on the Solana blockchain that facilitate NFTs and trading thereof. These contracts take care of associating the Metadata of an NFT with the regular token created by the Token Program. They also have constructs for running auctions, including tracking bidders and storing tokens in an escrow account called a vault.

Metaplex NFTs

Metaplex NFTs are defined by the Metaplex Token Metadata Standard. This is a definition for the (JSON) metadata that a token is associated with. Tokens created through Metaplex will all adhere to this standard. It will contain at least a name, an image, optional other files and a list of creators of the token. Metaplex NFTs can be Master Editions or Editions. Editions are printed from Master Editions.


The collective of all Metaspaces and the infrastructure behind it.

Metaverse Runtime

The actual online environment, or game. (not the web app)


See Creating.


Inside a Metaspace, a Moderator is a Staff member with moderation rights.


See Tokens.


Item that grants access to a Metaspace (different from a ticket).


Secret used together with a public Username to log in to a Profile.

Pixel Stream

An interactive video feed directly from a machine running a 3d client like Unreal engine, to a receiving client through WebRTC technology.


The market presence of a Brand (in the Metaverse).


Describes a user (last picked inventory, favorites, ...). Note: Private keys are not stored.

Private key

A secret that, combined with a public key, provides access to a service or item. Used for logging in to Solana wallets.

Phantom Wallet


Programs (otherwise referred to as Smart Contracts) are nothing more than simple functions that run ‘on’ the blockchain. The programs are sent to the blockchain via a transaction. One or more nodes in the network store this program and will execute it when requested. This request is also done with a transaction, containing instructions for the program.An instruction consists of a list of accounts and some data. The accounts specify the targets of the program for that execution. For the simple example of transferring some tokens from one wallet to another, the list would contain the source address and destination address, as well as the amount of tokens to transfer as the data. This instruction will then be sent to the program that manages that token. The program will verify that there are sufficient tokens in the source wallet, and that the source wallet has approved this transaction. This is done by the source wallet signing the transaction with its private key. For more complex programs, more than two accounts can be supplied and more than one can sign the transaction.

Public key

An address that can be referred to by others, for instance a Solana wallet address that can be shared as text or QR code. Together with a Private key, provides access to a service or item.

Smart contracts

See Programs

Social Space

Any space (physical or virtual) where two or more humans can interact.


Solana is the blockchain network that runs the Programs which underpin our ecosystem.


SOL is the native currency of the Solana blockchain. It is technically not a token and does not have its own token account. It is what all fees are paid with. For transactions that require tokens, a Wrapped SOL token exists that can be exchanged 1-to-1 with SOL.SOL can be divided up to 9 decimal places. This smallest unit is called a Lamport (0.000000001 SOL). Fees and other prices are often quoted in Lamports instead of SOL.


A type of user who runs an event and has specific rights during that event. Artist or his crew.


A designated area in a Metaspace during an event, accessible only to Staff.


For a NFT, the amount of copies of that NFT that is available.


An item needed to access an event inside a Metaspace.


Tokens are the T in NFTs. Generally, these are the things that are sent between wallets. On Solana, they are the product of the Token Program. Anyone can create a new token, by sending a transaction with instructions for creating the token to the Token Program. This program then creates a new Account with the necessary information about the token and ownership of that account is assigned to the wallet that sent the transaction. Now, the creator can do what they want with their tokens. Tokens can be made Non Fungible, to complete the NFT acronym, by making them unique in some way. This is usually done by associating metadata with each token, which can contain a unique identifier, for example.

Token sales

For the YOM Marketplace, we host sales based on Metaplex auctions. In a sale, copies of a Master Edition are sold for a fixed price.


An item that the user can deploy inside a Metaspace. This may allow other users to interact with it as well.

Use (User action)

When the user interacts with a Metaspace object.


Anyone inside the Metaspace. Consumers and Staff. Users have avatars, accounts and a profile.


Public name used together with a secret Password to log in to a Profile. Usernames are visible for anyone in the Metaspace.

User type

The category of user. Consumer or Staff.


Any zone in the Metaspace. Volumes are placeable in the Unreal Editor.


A user's Solana wallet, identifiable by a public key (wallet address)


An item that a User can equip on their Avatar and which is visible to other users.


A wallet is what identifies you as one of the parties in a transaction. If at some point a transaction took place that named your wallet as the destination, your wallet now ‘contains’ whatever was sent in the transaction. In reality, a wallet cannot contain anything. It is nothing more than an identifier (the public key) and proof that that identifier belongs to the wallet (the private/secret key), together these are called a keypair. When a transaction takes place with your wallet as the source, that transaction must be signed by your wallet, or the transaction will not be accepted. To sign a transaction, you need the private key.


See Pixel Streaming.


See favorites.


An abbreviation for Your Open Metaverse.


The native token of Your Open Metaverse.