Broadcast Announcement

A Broadcast Announcement is a way to send a public message to everyone.

Fields

FieldDescriptionData TypeSerializationParquet TypeBloom Filter
announcementTypeAnnouncement Type Enum (2)enumdecimalINT32no
contentHashkeccak-256 hash of content stored at URL32 byteshexadecimalBYTE_ARRAYYES
fromIdid of the user creating the announcement64-bit unsigned integerdecimalUINT_64YES
urlcontent URLUTF-8UTF-8UTF8no

Field Requirements

announcementType

  • MUST be fixed to 2

contentHash

fromId

  • MUST be a DSNP User Id
  • MUST have authorized the creation of the Announcement, either directly or via a transparent chain of delegation

url

  • MUST NOT refer to localhost or any reserved IP addresses as defined in RFC6890
  • Resource MUST be one of the supported Activity Content Types
  • MUST use one of the supported URL Schemes

Supported URL Schemes

SchemeDescriptionReferenceDSNP Version Added
HTTPSHypertext Transfer Protocol SecureRFC28181.0