Geoffrey Heckmann.

Digital ownership for physical objects — a marketplace for limited editions with built-in anti-fraud.

Problem

Brands selling limited-edition physical goods lack a credible, cross-platform way to prove authenticity and transfer ownership after the first sale.

Approach

Defined the full technical architecture end-to-end: a Shopify extension for phygital commerce, an NFT-backed ownership title issued at checkout, and a redemption flow that ties the digital title back to the physical object.

Result

A working multi-brand marketplace where every item carries a verifiable, transferable digital ownership record — currently onboarding partner brands.

• Next.js
• TypeScript
• Shopify
• Solidity
• Viem
• Postgres

NFT-focused Layer 1 on Substrate and the DApp studio that ships on top of it.

Problem

Ternoa needed to ship a production-grade NFT L1 in the Polkadot ecosystem while simultaneously proving the platform through first-party DApps.

Approach

Ran technical strategy across chain and apps: drove smart-contract architecture and audits, grew the engineering org, unblocked protocol and product teams, and shepherded releases from inception to production.

Result

A live Substrate-based NFT chain with an active DApp studio and multiple third-party integrations.

• Substrate
• Rust
• Polkadot
• Solidity
• React
• Node

The platform that became the biggest French crypto-staking service, built in partnership with Owen Simonin (Hasheur).

Problem

Retail investors in France had no simple, trustworthy way to participate in crypto mining and staking.

Approach

Co-founded the company and led the technical build-out: infrastructure for mining and staking, a retail-friendly product surface, and the operational systems behind it.

Result

Grew into France's largest retail staking platform under the Meria brand — a defining project of the early French DeFi scene.

• Node
• React
• Crypto
• Staking
• Ops