Crate timestamp

Allow block authors to include a timestamp via an inherent transaction.

This is roughly analogous to FRAME’s pallet timestamp. It relies on the same client-side inherent data provider, as well as Tuxedo’s own previous block inherent data provider.

In each block, the block author must include a single SetTimestamp transaction that peeks at the Timestamp UTXO that was created in the previous block, and creates a new one with an updated timestamp.

Structs

• CleanUpTimestamp
  Allows users to voluntarily clean up old timestamps by showing that there exists another timestamp that is at least the CLEANUP_AGE newer.
• SetTimestamp
  A constraint checker for the simple act of setting a new best timetamp.
• Timestamp
  A timestamp, since the unix epoch, noted at some point in the history of the chain. It also records the block height in which it was included.

Enums

• TimestampError
  Reasons that setting or cleaning up the timestamp may go wrong.

Traits

• TimestampConfig
  Options to configure the timestamp piece in your runtime. Currently we only need access to a block number.