How to Build Your Own L1 Blockchain Without Drowning in Infrastructure
My experience and thoughts on Tanssi and fully customizable Layer-1s
I first started thinking that smart contracts are not the limit when I tried to launch a decentralized application and ran into the constraints of L2s and shared networks. That’s when it clicked: sometimes you need to go deeper — down to your own base layer (Layer-1), where you control everything, like running your own country: your own laws, your own taxes, your own governance. But with that freedom comes responsibility — infrastructure, operators, RPCs, validators, upgrades… it’s very easy to drown in technical complexity.
This is where Tanssi comes into play — a platform that aims to give you L1 sovereignty without the infrastructure headache.
🧠 What does “your own L1” actually mean?
An L1 blockchain is responsible for:
- transaction ordering
- consensus rules
- its own security model
It’s like being the mayor of your own city instead of just living in someone else’s megapolis.
But until recently, launching an L1 meant months of infrastructure work, hiring node operators, setting up networks, and maintaining everything yourself. With Tanssi, this process can take hours or days instead of months.
🧩 How Tanssi works (in simple terms)
Imagine you want to open a café.
You could:
- rent a place
- hire staff
- find suppliers
- deal with accounting and security yourself
Or you could use a franchise, where most of the infrastructure is already in place — processes, suppliers, branding, and support.
Tanssi is like a high-tech franchise for launching your own L1 blockchain.
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You decide how your business works (the protocol rules), and Tanssi provides the infrastructure — nodes, operators, networking, and reliability.
⚙️ What you control as an L1 creator
When you launch an L1 on Tanssi, you gain control over things that were previously difficult or even impossible:
1) Execution logic (runtime)
You can:
- use an EVM-compatible runtime to deploy Solidity contracts immediately
- or build a fully custom Substrate runtime if your project needs special logic
Real-life analogy:
In one of my startups, we started with a standard template to test the idea quickly. Once the project grew, we customized the internal rules to better fit our needs. This saved time early on and gave us full control later — exactly the same logic applies here.
2) Gas models and transaction fees
You decide:
- which token is used for gas
- whether transactions should be free for users
- how fees are calculated
It’s like running a café where you choose whether coffee is paid, discounted, or free for certain customers — it’s all part of your strategy.
3) Tokenomics and incentives
You control:
- the initial token distribution
- inflation or deflation mechanics
- reward systems for validators and participants
This isn’t just technical design — it’s about how people behave economically inside your ecosystem, almost like designing a game economy.
4) Network governance
You choose:
- who can propose changes
- how upgrades are approved
- how power is distributed
At an early stage, this might be fully controlled by your team. As the network grows, governance can gradually be opened to the community.
5) Upgrades without hard forks
One of the coolest features is that network upgrades can happen without disruptive hard forks. It feels more like updating software than rebuilding a city — fewer risks and faster innovation.
🚀 What Tanssi handles for you
Tanssi takes care of all the heavy operational lifting that usually consumes massive amounts of time and resources:
- distributed block production
- RPC nodes and stable network access
- indexers and block explorers
- networking and node communication
- coordination of operators and validators
In short, Tanssi delivers blockchain infrastructure “as a service”, so you can focus on what really matters — the product, the ecosystem, and the economics.
⚖️ Why L2s are not always enough
L2s are great when you mainly want lower fees or higher throughput — especially for DeFi or consumer apps. But they often depend on a parent L1 and come with limitations in terms of governance, execution rules, and flexibility.
If your project needs:
- unique execution rules
- custom gas markets
- specialized governance logic
then an L1 becomes the right strategic choice.
🪩 My personal takeaway
For me, moving from shared networks to your own L1 isn’t about technical flexing — it’s about strategic control over your product. It’s like renting a car versus owning one. Ownership comes with responsibility, but it also gives you freedom.
With Tanssi, launching an L1 stops being scary. The barrier to entry drops in the same way AWS once did for servers and cloud infrastructure.
If you’re thinking about the next stage of your project — not just another dApp on someone else’s chain, but a fully sovereign base layer with your own rules — Tanssi is definitely worth a closer look.
