NFL Smart Contracts

NFL Contract Addresses

Entities

Series

Series encompass periods of time and will be named using strings like: Summer 2021 or Series 3. More that one series can be open at any given time, and in order for an Edition to be created, it must have a SeriesID.

On Chain Fields

• FlowID
• Name
• Active

Transactions

• CreateSeries: Mints a new series onto Flow
• CloseSeries: Stops any new Editions from using the specified series

  Sets

  Sets are categories: Greatest Touchdowns or similar. Sets have a unique name.An Edition must have a SetID to be created. Sets do not close and cannot be retired. Sets contain a dictionary of all the SetID/PlayID combinations that exist within an Edition. This is checked everytime a new Edition is created to ensure they are unique.

On Chain Fields

• FlowID
• Name

Transactions

• CreateSet: Mints a new set onto Flow

  Plays

  Plays contain the actual play metadata, including stats from NFL and Elias. This will contain Player, Team, and Game metadata some of which may be blank depending on the type of moment.

On Chain Fields

• FlowID
• Classification (Name TBC: example, PLAYER_GAME, TEAM_GAME, PLAYER_MELT, TEAM_MELT)
• Metadata (stored as a string map. This can technically be anything, but the agreeed upon fields are as follows)
  • PlayType
  • HomeTeamName
  • AwayTeamName
  • TeamName
  • GameDate
  • HomeTeamScore
  • AwayTeamScore
  • PlayerFirstName
  • PlayerLastName
  • PlayerPosition
  • PlayerNumber

Transactions

• CreatePlay: Mints a new Play on Flow

  Editions

  Editions are the combination of a SeriesID, SetID, and PlayID and are what moments are minted out of. They also have a Max and Current Edition size so we can specify how many moments can ever be minted from the edition.

The MaxEditionSize is optional. If it is not set, moments can be minted unlimitedly. An Edition will close, if either of these things happen:

• The max number of moments are minted
• The CloseEdition transaction is used

• MaxEditionSize cannot be changed once it is set.

Fields

• FlowID
• SeriesID
• SetID
• PlayID
• MaxEditionSize
• Tier
• NumMinted

Transactions

• CreateEdition: Mints a new Edition on Flow.
• CloseEdition: Closes an Edition so no new moments can be minted from it. This is irreversible. The Edition is closed by setting the MaxEditionSize to the value of NumMinted.

Moment NFT

Moments are minted out of editions. You can think of Editions as a "cookie cutter" for moments. The Serial Number is what makes each MomentNFT unique. These are the NFTs that will be sold in packs.

Fields

• FlowID
• EditionID
• Serial Number

Transactions

• MintMomentNFT: Mints a moment out of an EditionID

NFT Metadata Standard

The contract conforms to the Flow NFT Metadata standard and implements the Core NFT Views. See Flow NFT Catalog for details.