Guides & resources — Prometiam

Practical guides to European company registries, KYB, sanctions screening and the Prometiam company data API. Country playbooks, registry explainers, integration tutorials and honest provider comparisons.

• KYB for Poland under MiCA (2026) — The 1 July 2026 CASP deadline and how to verify Polish counterparties before it.
• Poland KYB API — Verify Polish companies via the KRS register — NIP, REGON, PKD, capital, pricing.
• UK + Ireland (British Isles) KYB — Companies House (UK) and the CRO (Ireland) under one key, two registries.
• What is the CRO? (Ireland) — Ireland's Companies Registration Office — CRO numbers, company types, and what the register publishes.
• What is the KRS? (Poland) — Poland's National Court Register — KRS vs NIP vs REGON, and why sole traders are missing.
• What is Brønnøysundregistrene? (Norway) — Norway's Enhetsregisteret — the organisation number, open data, and the missing event gazette.
• What is BORME? — Spain's company registry gazette — NIF, legal forms, published sections.
• What is BODACC? — France's official gazette — familleavis values, SIREN linkage, BODACC vs Sirene.
• What is Companies House? — UK registry — company-number formats, legal forms, the PSC register, SIC codes.
• SIREN vs SIRET vs NIF — Which company identifier to store and query — formats, checksums, common mistakes.
• What is KYB? — Know Your Business explained — KYB vs KYC, the 5 verification steps, EU regulation.
• EU fintech onboarding checklist — 18 steps across legal entity, beneficial ownership, sanctions, ongoing monitoring.
• KYB under MiCA (CASPs) — The 1 July 2026 crypto-asset authorisation deadline — verify + screen counterparties.
• DAC7 seller verification — Collect + verify the business-seller identifiers DAC7 requires for marketplaces.
• Insolvency monitoring in Europe — How bankruptcy events are published in Spain and France, with REST-API examples.
• Verify a Spanish NIF in Python — Local checksum + REST lookup → full BORME profile in 30 lines.
• Daily BORME watchlist with Cloudflare Workers — Free-tier daily counterparty event monitoring with Slack alerts.
• Screen sanctions in JavaScript — EU + UN + OFAC + UK OFSI + FR gels + US CSL in one Node.js call with confidence scoring.
• VAT validation API (VIES) — Validate an EU VAT number against VIES (27 states + XI) — Python & Node, on the free tier.
• LEI lookup API (GLEIF) — Resolve and search 20-char Legal Entity Identifiers in the GLEIF register.
• Free company data API — 1,000 calls/month, no card — company search + detail, VIES, and LEI across 6 countries.
• KYB onboarding — Verify EU + UK companies in 30 lines — identifier → full profile + sanctions.
• Counterparty monitoring — Daily watch on capital, director, dissolution, and insolvency events.
• New incorporations feed — Every company registered today across ES, FR, GB, IE, PL and NO — filter by incorporation date, page with a cursor.
• Customer insolvency monitoring — Credit-control angle — over 300K corporate distress notices plus 330K dissolutions across FR, DE, GB, AT, NO, CH, FI and US, plus Spanish concursal filings.
• Sanctions screening — Six sources (incl. US CSL) in one trigram-fuzzy call with confidence scoring.
• Director network analysis — Cross-company exposure for fraud + KYB — shell networks, phoenix patterns.
• EU + UK KYB APIs compared (2026) — Honest buyer’s guide: Prometiam vs Kyckr, Sumsub, Global Database, OpenCorporates, Creditsafe, ComplyAdvantage.
• Creditsafe alternative — EU + UK registry data and sanctions screening, public pricing from €9.99/mo.
• Kyckr alternative — EU + UK-native, daily-fresh, transparent pricing, sanctions included.
• Verifex alternative — Official-registry depth vs a screening-first API — with UK PSC ownership.
• Entyrix alternative — Committed public pricing and live sanctions vs a pre-commercial API.
• Pappers alternative — Multi-country EU + UK API with sanctions screening included.
• Companies House API alternative — When the free UK API is not enough — add EU coverage and sanctions.
• Einforma alternative — A REST API instead of per-report PDFs — free tier, public pricing.
• OpenCorporates alternative — EU + UK with daily-fresh data and built-in sanctions screening.
• Iberinform alternative — Modern REST-first API for Spanish company data — plus France and the UK.
• For lenders & factoring — borrower verification plus insolvency and control-change monitoring.
• Companies House API in Python — auth, search, officers and PSC, and where the free UK API runs out.
• BODACC API in Node.js — notice families and reading procédures collectives correctly.
• kompany alternative — global reach and audit-proof documents vs six registries in depth.
• Export-control screening — 11 US denied-party lists in the same call as sanctions.
• Societe.com alternative — French depth vs six-country breadth, honest on where they win.
• Sumsub alternative — queryable registry data vs a pass/fail verification decision.
• Company identifier validator — free, offline check of a NIF, SIREN, NIP, org number or EU VAT.
• LEI lookup — free search of the GLEIF register by LEI or company name.
• KYB and company-data glossary — identifiers, registries, compliance terms and corporate events.
• HitHorizons alternative — Registry-sourced and daily-fresh vs broad monthly firmographics — with officers, events and screening.
• registries.io alternative — A live REST API today vs a lookup tool with an API still coming — and where they beat us on Poland.
• OpenRegister alternative — Germany-only vs six-country EU + UK. Barely overlapping — often the answer is both.
• KYB API for fintech — Onboard and monitor EU + UK business customers — registry, UK PSC ownership, sanctions.
• Merchant KYB for PSPs — Merchant onboarding, sanctions screening, and continuous merchant-risk monitoring.
• KYB for crypto & CASPs — Corporate-customer and counterparty verification for MiCA + AMLR compliance.
• Seller verification for marketplaces — Business-seller verification at scale, shell-entity detection, dissolution alerts.
• AMLR 2026–2027 compliance timeline — What Regulation (EU) 2024/1624 changes for KYB, with a readiness checklist.
• EU + UK company identifiers — Formats, checksums, and registries for Spain, France, the UK, Ireland, Poland, and Norway.
• One API for every EU + UK registry — Verify any company across 6 countries from one REST endpoint — with examples.

Every guide is free to read and needs no account. Get a free API key at https://www.prometiam.com/signup — 1,000 calls a month, no credit card.