Yes, methane cracking, called Methane Pyrolysis, becomes a carbon-negative technology when biomethane is used as a feedstock. Just look at the following table taken from the US Department of Energy site (https://www.energy.gov/sites/default/files/2021-09/h2-shot-summit-panel2-methane-pyrolysis.pdf) showing carbon dioxide emissions in different hydrogen production methods. Methane cracking is shown as Turquoise hydrogen. The next row to the Turquoise hydrogen is methane cracking when biomethane is used as a feedstock. Biogas plants located at dairies and waste-water treatment plants can be easily upgraded to produce biomethane. One can thus have distributed production of low-carbon hydrogen with carbon-negative technology.

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