Field notes

Reconciliation,
written down.

Practical notes on the things treasury and IT teams actually wrestle with — ISO 20022, self-hosting, audit, and the matching engine itself.

Standards18 Jun 2026 · 7 min read

ISO 20022 for African banks: what camt.053 changes about reconciliation

As correspondent banks finish the MT-to-ISO 20022 migration, the statements your treasury reconciles are changing shape. Here's what camt.053/052/054 actually changes for matching — and where the gains and the gotchas are.

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Procurement12 Jun 2026 · 6 min read

Self-hosted vs SaaS for treasury reconciliation: a procurement lens

For most software, SaaS is the obvious default. For a bank reconciling nostro and GL data, the calculus is different. A practical look at data residency, control, cost, and when each model actually wins.

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Security5 Jun 2026 · 5 min read

What “tamper-evident” actually means for an audit log

Every reconciliation vendor says they have an audit log. Few can prove it wasn't edited. Here's what tamper-evident really requires — append-only storage, hash chaining, and a verify step — and what to ask a vendor.

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