Chirp, like X (Twitter) and Discord, numbers every post with a Snowflake ID that contains its publication date down to the millisecond. Paste an ID, or the address of a post: even deleted, its ID still talks.

In real life: TweetedAt, Discord Snowflake decoders. The first 41 bits of the ID count the milliseconds elapsed since a reference date specific to the network; the rest identifies the server that created it.