Timestamp (ms) of the last issuance drip.
On existing chains, this must be seeded via [migrations::MigrateV1ToV2] to prevent incorrect minting on the first drip.
migrations::MigrateV1ToV2
Timestamp (ms) of the last issuance drip.
On existing chains, this must be seeded via [
migrations::MigrateV1ToV2] to prevent incorrect minting on the first drip.