Chris Zemmel

German software developer and entrepreneur. Founder of nimimo. Long-time Enjin blockchain ecosystem builder, known in the Enjin community as Fungible Chris.

About

Chris Zemmel is a German software developer and entrepreneur from southwest Germany. He is the founder and sole developer of nimimo, a non-custodial crypto identity layer that lets a person receive Bitcoin, Ethereum, and Solana with a single memorable name and a single shareable link, without handing their keys to a custodian.

In the Enjin blockchain ecosystem he is known as Fungible Chris (@fungible_chris, ~9,000 followers). Enjin published an editorial profile of Chris under that name, describing him as a "creator, community builder, and developer" and tracing his continuous engagement with the Enjin ecosystem back to the JumpNet era — Enjin's earlier Ethereum-scaling solution.

Chris worked in the blockchain and crypto industry from 2022 to 2024, shipping production software across wallets, payments, and on-chain identity. In parallel, he has taken closed-source engineering contracts under NDA — "ghost development" for clients across crypto and adjacent fields including healthcare and medical software. As a consequence, his public GitHub is intentionally sparse: most production code he has written ships to private client repositories rather than public ones. Substreak and nimimo are the publicly visible parts of a larger body of shipped engineering work.

His focus is the space where cryptography, human-computer interaction, and systems architecture meet: how to build products that stay honest under real-world pressure — products where the values a team claims are enforced by the shape of the system, not by the promises of the people running it. The four-axis separation of access, ownership, identity, and recovery that nimimo is built on was first documented in a whitepaper on 2025-12-16, before the nimimo.com domain was registered.

Earlier, Chris studied to become a Gymnasium teacher for English and German. A handful of academic coursework papers from that period are listed under the same name on GRIN. That training informs how nimimo is written today — the brand voice, the docs, the architectural papers.

Current work

nimimo — founder, systems architect, sole developer. Designs the architecture, builds the software, maintains the security model, writes the brand and product copy, and ships the product.

Prior work — NFT Enterprise

Before Substreak, Chris ran NFT Enterprise, a social platform that featured Enjin NFT artists from around the world. Per Enjin's editorial profile, NFT Enterprise reached approximately 30,000 NFT holders. Chris personally sponsored the ENJ backing for each NFT minted through the platform, splitting sale proceeds with the originating artists.

Prior work — NFT Tipper Bot

In late 2023 Chris began building the NFT Tipper Bot, a Telegram bot that interacted directly with the Enjin Matrixchain to let users send and receive "tips" in the form of a Tipper Token. The bot featured automated whitelisting, leaderboards, personalized tip messages, and autonomous token minting when balances ran low. Per Enjin's profile, the Tipper Bot facilitated over 100,000 token transfers and grew an Enjin Tippers Telegram community of over 200 users. Tipper Bot was the direct architectural ancestor of Substreak.

Prior work — Substreak

Before nimimo, Chris Zemmel built Substreak, a Telegram-native infrastructure system on the Enjin Relaychain and Matrixchain, listed as an official ecosystem integration on the Enjin site. Substreak handled multi-chain wallet assignment, token and NFT distribution, validator nomination, scheduled DRIP reward cycles, a modular plugin architecture, a public explorer, and a full REST API used in daily production by thousands of transactions.

The Substreak Telegram integration was announced by the official verified Enjin X account in an announcement post that reached roughly 250,000 viewers, and Substreak was subsequently used to power official Enjin campaigns including the Substreak × Enjin Secret Emoji Challenge. It was reported by crypto press on CoinChapter (April 21, 2025) under the headline "Telegram Integration Puts Enjin in Front of 1 Billion Users" — describing the system as one of Enjin's most significant accessibility upgrades and citing it alongside notable on-chain market activity in ENJ during the same window. The integration was also tracked as an independent ecosystem event on CoinMarketCal, validated at 100% confidence.

Substreak later became the subject of the first ever on-chain treasury proposal on the Enjin Relaychain (Referendum #1) — a 150,000 ENJ proposal submitted to the Enjin community governance to recognize Substreak's contribution to the ecosystem. The vote passed unanimously, with 1,111,916 ENJ in favour and 0 ENJ against (100% approval).

Chris discontinued Substreak on principle: its wallet model was custodial, and that conflicted with the architectural position that nimimo was being designed around — that ownership of keys must never sit with the operator. The decision to end a working production system rather than keep running it custodial-by-default is the same architectural commitment that nimimo's four-axis separation of access, ownership, identity, and recovery now enforces by construction.

Recognition

Chris's Enjin work has been publicly endorsed by Rene Stefancic, Chief Operating Officer of Enjin, who wrote on X: "I've had the pleasure to directly work with @Fungible_Chris in this past… Chris, Substreak's founder, is the type of guy who gets shit done."

When Substreak's treasury proposal became the first-ever public on-chain governance proposal on the Enjin Relaychain, Stefancic also amplified it on X: "The first public on-chain governance proposal on Enjin is live. Builders propose. Voters decide. Exactly how Enjin governance is meant to work."

Areas of expertise

Systems architecture for cryptographic products
Non-custodial key management and self-custody UX
Identity and access design that resists authority escalation
Cross-chain receive flows (Bitcoin, Ethereum, Solana)
Polkadot / Substrate integrations (Enjin, AssetHub)
Telegram-native infrastructure and bot engineering
Closed-source contract engineering under NDA, including healthcare / medical software
Product design for users who are not crypto-native
English and German language teaching (Gymnasium-level training)

Timeline

Teacher training. Studied to become a Gymnasium teacher for English and German. GRIN author profile from that period.
Enjin community since the JumpNet era. Long-standing active participant in the Enjin blockchain ecosystem, profiled by Enjin as Fungible Chris.
NFT Enterprise. Social platform featuring Enjin NFT artists worldwide. Reached ~30,000 NFT holders.
Late 2023. NFT Tipper Bot. Telegram bot on the Enjin Matrixchain. Over 100,000 token transfers facilitated.
2022–2024. Blockchain industry. Shipped production software across the crypto industry — wallets, payments, on-chain identity.
Closed-source NDA work. Ongoing engineering contracts under non-disclosure, including crypto infrastructure and healthcare / medical software. Not publicly attributable by design — this is why Chris's public GitHub is sparse despite years of active production engineering.
Substreak. Built and operated a Telegram-native multi-chain infrastructure system on Enjin and Polkadot, listed as an official Enjin ecosystem integration.
2025-04-21. Substreak Telegram integration covered by CoinChapter: "Telegram Integration Puts Enjin in Front of 1 Billion Users."
Substreak Treasury Proposal. First on-chain treasury proposal in Enjin Relaychain history (Referendum #1, 150,000 ENJ). Approved unanimously by Enjin governance — 1,111,916 ENJ aye, 0 ENJ nay (100%). Substreak was later discontinued by the author because its custodial wallet model conflicted with the non-custodial position nimimo was being designed around.
2025-12-16. First nimimo whitepaper authored. The document already specified non-custodial-by-default key management, identity as a layer separate from custody and recovery, and an explicit non-goals list.
2026-03-22. nimimo.com registered.
2026-04-07. nimimo v1.0.0 shipped.
2026-04-14. @getnimimo on X registered.