Notes on fintech, compliance and building across borders.

Treating compliance as part of the product: keep what was already provided, ask before money is in flight and say who decides.

Self-custody does not remove risk, it relocates it. What changes in design when the person controls the wallet and third parties provide fiat services.

Three questions worth separating before you ask for account details: who invoices, how the client pays and who verifies the company.

Inside Bennu’s router: why 0x and Relay serve different network paths, and how quotes, signatures and status stay distinct.

Two anonymized Bennu cases show why KYC evidence, provider decisions and account eligibility need separate states.

Another route may help with future transactions; it won't release held funds. The map I'd make before adopting one.

Beneficiary, destination, currency, reference and cost: reducing the work of the person receiving the invoice.

A personal reflection on how Barcelona, Latin America and Dubai have changed the way I create, learn and work.

What should be written down to separate facts, hypotheses, owners and next steps when an operation stops responding.

What to do when the provider, internal ledger and bank statement do not tell the same story.

Person, entities, product, providers and evidence: the map that prevents confusion during a bank review.

The five layers a transaction crosses when you do not control the chain, and three design rules that keep the user with someone to talk to.

The quality of a payments product is defined by its worst transaction, not its median. A protocol for the first 24 hours of a failed transfer.

What sharing bank data through APIs really means, who benefits, and why adoption moves slower than the technology.

From cards to instant rails: why security and regulation — not new features — are the real bottleneck.

What really changes when you operate in more than one jurisdiction — entities, corporate banking, compliance — and the corporate governance discipline it demands.

The difference between KYC, KYB and AML, why verification is not account approval, and the product decisions founders need to explain.

Why compliance is not an obstacle to building international financial products, but the infrastructure that makes them possible.