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Matt Brown's Notes

Substack
notes.mtb.xyz· irregular· Published 2 months ago

A fintech and vertical software investor's personal notes covering embedded energy fintech, card payment infrastructure explainers, and conference recaps on vertical SaaS. Readers get a mix of market analysis, plain-language introductions to payments concepts, and investment-related perspective.

embedded fintechcard issuingpayment networksauthorizationvertical saassaaspocalypserainforest vertexlight energyseries astablecoinsinterchangepayfacs
Platform
Substack
Frequency
Irregular
Latest issue
Sep 1, 2026
Language
English
Written for
Fintech professionals, vertical software operators, and VC-curious readers
Tone
analytical
Tracked since
Oct 26, 2026

Website: https://notes.mtb.xyz