It is a plain X tweet. And Jack himself wrote it.

https://njump.me/nevent1qqs8vx253p3r3q093w9vnzy4tzepzqldj7qqm9fqxd6xlpkqjvaummspzpmhxue69uhkummnw3ezumt0d5hsyg9he7059fukkzg7ss7uayva8m6vphyzuq552tklp0dum6u7ewf70qpsgqqqqqqsexzmnv nostr.fmt.wiz.biz