One Binder.Quote to Payout. One Truth.

The execution layer for launching a new parametric product at Lloyd's — quote-to-payout on one source of truth, without disrupting the binder's existing systems. On-chain policy logic, seismic triggers and automated next-day payout. Bordereaux and capacity from one shared ledger. Risk capital stays with the carrier.

Japan has real demand for parametric catastrophe cover — but launching products is still operationally hard.

Japan faces the world's most frequent and severe earthquake peril. A massive protection gap remains — and three operational blockers prevent even a parametric product from launching quickly.

1995 · Hanshin

~$100B

Mw 6.9

2011 · Tohoku

~$220B

Mw 9.0

2016 · Kumamoto

~$35B

Mw 7.0

2024 · Noto

~$10B

Mw 7.5

Sources: USGS/JMA (Mw); Cabinet Office of Japan, World Bank, Moody's RMS, Gallagher Re (economic & insured losses).

Japan

Annual average economic losses

$50–70B

26%
74%
InsuredUninsured

APAC (excl. Japan)

Annual average economic losses

$300–400B

9%
91%
InsuredUninsured

Difficult Peril

Hard to model, ambiguous triggers · severe accumulation for carriers.

Operational Inefficiency

Offline bordereaux, no live view · costly oversight, slow delegation.

Settlement & Trust

Slow, unclear payouts · siloed, hand-reconciled data.

Automate the full operating flow — one binder. Quote to payout. One truth.

Start with your next parametric launch — DeIn runs as the execution layer for that product, alongside your existing systems.

01

Product Setup

  • Algorithmic Premium Adjustment, live buffer
  • Treaty terms as verifiable on-chain rules
02

Bind / Issue

  • Breach — transaction reverts
  • Rejected before binding, not after
03

Live Monitoring

  • Live exposure & concentration
  • Auto re-pricing as capacity fills
04

Automated Payout

  • Trigger computes payout
  • Next-day settlement, no claims process
05

Bordereaux

  • Auto-generated at bind
  • Sourced from one shared record
06

Capacity & Governance

  • Remaining capacity updates as binds land
  • Re-tunable live limits (exploring)
🔗

One Shared Ledger

Single Source of Truth — cedant, MGA & syndicate aligned

🛡️

Delegated Authority Enforced in Code

Limits, triggers and terms run as code. No breach.

🏆 A quick-launch foundation for parametric products.  ·  Built for Lloyd's delegated authority.

For a new parametric product, the rail has to be built in, not bolted on.

AI and Web2 overlays detect and advise on top of today's systems. For parametric catastrophe — irreversible payout, cross-border capital — detection isn't enough. The rail itself must change.

01

Enforced, Not Detected

  • Reverts, not flags — a binding beyond mandate is rejected on-chain; the breach can't occur, not just get flagged after
  • Preventive control — limits, triggers & terms run as code; oversight is a guarantee, not an audit
  • Pen stays with the carrier — underwriting pen and risk capital stay with the regulated carrier
02

One Ledger, No Silos

  • Shared record — cedant, MGA & broker reference one permissioned ledger, not books that drift apart
  • No reconciliation — a shared ledger removes the books-vs-books gap at source
  • Disputes collapse — settlement disputes fall from months to hours
03

Detection Isn’t Enough

  • Irreversible payout — an automated next-day payout can't be clawed back; the rule must hold before it fires
  • Trustless capital — external (ILS) capital verifies the book and triggers directly
  • No drift — what gets quoted is exactly what gets executed

Not a marketplace matching capital to risk — an operating system the binder itself runs on. The same rail streamlines the back-office now, and shares catastrophe risk with alternative (ILS) capital next — next-generation ART.

Beyond concept — a working end-to-end stack.

Our first prototype (Japan earthquake parametric) is a working end-to-end stack, live on Ethereum Sepolia testnet, and the entry route is market-validated.

90%+

Manual work reduced

Bordereaux · Reporting tasks

Months→Weeks

Time to launch new product

From pricing to payout in code

Weeks→Real-time

Audit & reporting time

Monitoring · Audit · Reports

100%

One source of truth

Transparency & accuracy

Oct 2024

Founded

UTokyo Blockchain Innovation endowed-course project. Initial focus: retail insurance.

Dec 2024

Top score at UTokyo

Necessity 9/10 · Novelty 10/10 · Completeness 8/10. Only team of 17 (2024–2025) to score a perfect 10 on novelty.

Feb 2026

Live on testnet

Full end-to-end product live on Ethereum Sepolia after 1+ year of build.

Mar 2026

B2B & reinsurance

Demos with UTokyo faculty, a Japanese Lloyd's syndicate parent and a Japanese insurtech. Selected the B2B route.

May 2026

Lloyd's market features

✓ Bordereaux at source · ✓ Live accumulation & capacity view · ✓ Delegated authority enforced in code

From Mar 2026  ·  Lloyd's Lab Accelerator & Market Access

Reinsurance-market entry; Lloyd's broker-tech (Superscript) confirmed the opportunity. Direct relationships across the Lloyd's ecosystem — a major Japanese trading house's UK insurance arm and a leading Japanese non-life insurer's Lloyd's Lab Japan liaison.

Three architectural commitments.

Not features — the choices that make DeIn fundamentally different from any platform retrofitted from legacy systems.

PRINCIPLE 01

Everything as Code

Pricing curves, contract terms and underwriting rules live as versioned code, not PDFs and spreadsheets. Every change is traceable.

Why it matters — Cedants, syndicates and regulators read the same source of truth — no version conflicts between sales decks and operations manuals.

PRINCIPLE 02

Auditable by Default

Every event-to-payout path is simulatable before the loss and verifiable after. Logic is exposed, not hidden inside black-box claims.

Why it matters — Counterparty trust is built before the catastrophe, not litigated after. Settlement disputes collapse from months to hours.

PRINCIPLE 03

One Programmable Stack

Pricing, policy logic, trigger and payout execution run on one coherent stack — not bolted together from separate vendor systems.

Why it matters — What gets quoted is exactly what gets executed. No drift between sales price, treaty wording, capacity allocation and payout calculation.

From earthquake to all perils — and to alternative capital.

The same rail that automates Lloyd's back-office today scales to multi-peril and alternative capital tomorrow.

Phase 1 · Now

Earthquake Parametric Operating Layer

  • Pricing · Policy · Terms auto-generated
  • Live Capacity · Accumulation in Real-time
  • Bordereaux & Reports at source
  • Trigger & Settlement automation
  • Audit-ready · Delegated authority in code

Back office fully automated from Day 1

Phase 2 · Next Step

Multi-Product Platform

  • Flood, typhoon, volcano, BI expansion
  • Expand MGA/Coverholder network
  • Scale to Japan & Asia-Pacific market

Same infrastructure, new perils

Phase 3 · Future

Alternative Capital Layer

  • Web3 staking layer to absorb first loss
  • Transfer catastrophe risk to ILS capital
  • Improve capital efficiency
  • Regulation-aligned structure

Next-generation ART for systemic perils

Target Market · Japan

USD 1.5B–3B

¥200B–¥460B

Expansion (SOM) · Asia

USD 8B–15B

¥1.2T–¥2.3T

Vision (TAM) · Global

USD 50B–80B

¥7.5T–¥12T

Source: Swiss Re (2023 sigma), AON Reinsurance Solutions, RMS · *1USD = 150JPY

Working professionals who built DeIn end-to-end.

Actuarial & derivatives, payment engineering and data science & AI — mentored by the Endowed Chair for Blockchain Innovation, the University of Tokyo.

K

Ken

Product · Actuary

Amsterdam

Quant & IT at a major Japanese financial institution. Associate, Institute of Actuaries of Japan.

DeIn Role

  • Business logic, Chainlink oracle & DAO contracts
  • Capital-pool design & cat-risk / cross-border strategy
  • Code reviews across all smart contracts
H

Hiro

Payment Engineering

Tokyo

Led payment system development at several major Japanese IT companies.

DeIn Role

  • System design (contracts + Cloudflare)
  • Smart-contract security & audit readiness
  • Web3 infra architect & contract-security lead
S

Sho

Data Science & AI

Tokyo

Background in DX strategy and data science at major consulting and IT firms.

DeIn Role

  • Monte Carlo risk modelling & pricing engine
  • Policy management & NFT smart-contract dev
  • Payout logic simulation, UI / UX

Full-stack founding team — all three build from frontend to smart contracts, shipping DeIn end-to-end in-house.

Working today. Ready to pilot at Lloyd's.

The operating system for Lloyd's delegated authority — full stack live on Ethereum Sepolia testnet. First prototype: Japan earthquake parametric. We work with insurers, reinsurers, MGAs and underwriting partners.

Developed at the

Endowed Chair for Blockchain Innovation, the University of Tokyo

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