Cryptocurrency mining company TeraWulf Inc. is set to issue $3.2 billion in high-yield bonds to fund the expansion of its data centers, marking the largest junk bond issuance led by a single Wall Street institution. The bond issuance has attracted over $11 billion in orders, despite its untested market structure, thanks to a guarantee from Google, a subsidiary of Alphabet Inc. This guarantee will become effective once the data centers are operational and leased by UK startup Fluidstack.