Preuve de construction

Des produits réels. Des décisions visibles.

Ces pages documentent des produits que Danilson construit ou exploite. Les statuts reprennent les fiches publiques canoniques. Les métriques commerciales et données des membres ne sont pas publiées ici.

Projets

Chaque fiche est liée à un produit documenté.

Statut

État déclaré dans le roster public du projet.

Apprentissages

10 notes vérifiées reliées aux projets.

  1. BUILD 01En production

    Atamatax

    US expat tax infrastructure

    Americans abroad carry fragmented US obligations — FBAR, PFIC rules, Form 8621, catch-up procedures — hidden inside ordinary foreign accounts and funds; the market offers a specialist at several thousand dollars, or nothing.

    Point de décision

    Making uncertainty honest: every classification carries its source, a confidence level and the assumption still to confirm — and never reads as a legal determination.

    Système
    Tax situation engine · document workflow · fixed-price fulfillment
    Stack publiée
    Next.js · TypeScript · Postgres · Stripe · Vercel

    Parcours

    Trigger → Tax Situation Engine → Recommendation → Package

  2. BUILD 02En production

    Horvera

    Flight compensation infrastructure

    A disrupted passenger does not know air law and should not have to; the market answer is a claims company that keeps 30 to 44% of the payout.

    Point de décision

    Three jurisdictions that share one text and diverge on amounts, currencies and the reading of delay — carried by one versioned engine that shows its trace and its sources.

    Système
    Deterministic rules engine · claim workflow · programmatic search
    Stack publiée
    Next.js · TypeScript · Postgres · Stripe · PostHog

    Parcours

    Flight → Eligibility → Claim → Airline → Escalation

  3. BUILD 03En production

    Wabiro

    Consumer identity and relationship tests built around search, curiosity and sharing

    Personality and relationship tests are a huge search category built on forced sign-ups, endless quizzes and results with no method.

    Point de décision

    Holding the privacy line — answers never leave the device — while still allowing sharing, head-to-heads and paid reports.

    Système
    Test engine · versioned scoring · share loop · one-off payments
    Stack publiée
    Next.js · TypeScript · Postgres · Stripe · Vercel

    Parcours

    Search → Test → Result → Share → Referral

  4. BUILD 04En production

    Vellaci

    CRA compliance infrastructure for European product manufacturers

    The EU Cyber Resilience Act turns product security into questions with legal deadlines — what is exposed, what must be reported inside 24 and 72 hours, what evidence can be produced — and most manufacturers answer them from spreadsheets and ticket timestamps.

    Point de décision

    A reporting clock a regulator will accept: it starts when a named reviewer confirms awareness with a rationale — not when a ticket was created — and it is computed server-side with its rule version, source timestamp and timezone persisted, never only in the browser.

    Système
    SBOM ingestion · vulnerability intelligence · deadline engine · evidence vault
    Stack publiée
    Next.js · TypeScript · Postgres · Stripe · CycloneDX · SPDX · OSV · KEV · EPSS

    Parcours

    Product + SBOM → Vulnerability match → Reviewer decision → Article 14 clocks → Submission + evidence

  5. BUILD 05Bêta privée

    SponsorsMetrics

    Sponsorship pricing intelligence for YouTube talent agents

    YouTube talent agents in France price sponsorships by feel; when a brand says “too expensive”, there is no external comparable to answer with.

    Point de décision

    Bootstrapping a data product: the benchmark is only worth something once real campaigns are connected — hence a private beta with design partners before open access.

    Système
    YouTube API pipeline · CPM benchmark · deal desk · subscription billing
    Stack publiée
    Next.js · TypeScript · Postgres · YouTube API · Vercel

    Parcours

    Campaign data → Normalisation → CPM benchmark → Defensible price → Verified report

  6. BUILD 06En production

    Neucelle

    Petty-cash, receipts and VAT for Swiss HORECA — delivered to the fiduciary

    A Swiss restaurant’s cash till is kept by hand: receipts pile up in a drawer and some disappear, the balance is retyped into a spreadsheet and corrected from memory, VAT is applied by feel — and the fiduciary asks for the missing pieces a month later.

    Point de décision

    A two-sided product where neither side may be billed twice: the restaurant pays for its organisation, the practice for its portal, and the practice fee is deliberately flat — billing per client file would make a firm hesitate to connect exactly the clients the product serves best.

    Système
    Cash ledger · receipt capture · Swiss VAT · fiduciary portal
    Stack publiée
    Next.js · TypeScript · Postgres · Stripe · Vercel

    Parcours

    Cash expense → Receipt → Swiss VAT → Validation → Fiduciary export

Ce qui est publié

Des faits avec leur contexte.

Chaque build renvoie à une fiche de projet et aux field notes qui le citent. Les histoires de membres, événements privés, revenus non déclarés et résultats non vérifiés restent dans leurs frontières respectives.

Les pages actuelles ne reconstituent pas de chronologie quand les dates d’événement ne sont pas publiées. Les étapes datées seront ajoutées avec leur source, pas déduites du statut courant.

Le graphe de connaissances public contient 26 nœuds de projet, leçon et pattern et 16 relations, dérivés des fiches publiées.