The 2018 Farm Bill legalized hemp and all derivatives, extracts, and cannabinoids derived from hemp, provided they contain no more than 0.3 percent delta-9 THC on a dry-weight basis. Delta-8 THC produced from hemp-derived CBD falls within this definition in jurisdictions that have not enacted state-level restrictions on the compound. This federal legality under the Farm Bill is what allows delta-8 products to be manufactured, distributed, and sold in much of the United States.
The disconnect between delta-8's federal legal status and its payment processing status exists because card networks and acquiring banks set their own risk policies independently of federal law. A product can be legal to sell and still be classified as too risky to process by the financial institutions in the payment chain. Delta 8 payment processing through 27 Blockchain operates outside this financial infrastructure, so the card network's risk classification does not affect whether the merchant can accept payments. The merchant's legal obligations remain the merchant's responsibility. The payment channel provided by 27 Blockchain does not depend on card network approval.