Synapse
The a16z-backed BaaS middleware whose 2024 bankruptcy froze ~$200M of end-user funds across partner banks. Juno and Copper, both now in the neobankbeat graveyard, were among the apps caught in the collapse. The reason 'who holds the ledger?' is now a due-diligence question.
Other BaaS middleware
Client list shows tracked neobanks with a publicly documented relationship — not a complete customer book. Sourced from issuer disclosures and public reporting; suggest a fix.