Choose Your Hammer Wisely 1: Blockchains

Not all blockchains serve the same purpose. There are four categories worth understanding, and picking the wrong one for your use case wastes time and money.

But first, the question most people skip.

Do you need a blockchain?
           │
    ┌──────┴──────┐
    │             │
   YES           NO
    │             │
    ▼             ▼
Need trust    Use a
without       database
central
authority?
    │
    ▼
Which category?
    │
    ├─► Store of value → BTC/ETH
    ├─► General dApp → Rollups
    ├─► High-freq DeFi → SpeedRacers
    └─► Cross-chain coord → Control Planes

Do You Need a Blockchain?

Most applications don’t need a blockchain.

Use a blockchain when: no single party should control the data, you need censorship resistance, or you need transparent and auditable state that no one can tamper with.

If you can trust a central server, use a database. It’s faster and cheaper. The question isn’t “which blockchain” but “do I need one at all.”

The honest answer for most projects is no. If you’re building something where users would trust a company to run a server, you don’t need decentralization. You need good infrastructure.

Universal Standards: BTC and ETH Are Blue Chips

Bitcoin and Ethereum aren’t competing with anyone. They’re financial assets with first-mover advantage and professional standardization.

Institutional recognition matters. Regulatory clarity exists. They’re hedges against inflation and corruption. Digital property that doesn’t depend on any single government or company.

These aren’t platforms you build applications on for efficiency. They’re where you store value. The blue chips of crypto.

Rollups Inherit Security While Cutting Costs

Optimism, Arbitrum, Base. These are execution layers that commit state back to Ethereum.

You get Ethereum’s security guarantees without Ethereum’s costs. Transactions are cheap. Finality is fast enough. The main chain handles the trust.

Most applications should use rollups. If you’re building a dApp and don’t have a specific reason to be elsewhere, start here.

SpeedRacers Found Product-Market Fit in DeFi

Solana, Hyperliquid, and others optimized for one thing: speed. Fast finality, high throughput, everything else secondary.

They found product-market fit in DeFi. When you’re trading, milliseconds matter. These chains deliver.

They’ve lapped forks of universal standards that tried to compete on the same terms. If you’re launching a new blockchain project today, this category has the clearest demand.

Secure Control Planes Are Still Being Explored

Some architectures try something different: chains that coordinate other chains. Polkadot pioneered this with parachains and shared security.

The thesis is compelling. Instead of every chain reinventing security, they share it. A control plane that other applications plug into.

This category is still being explored. Bittensor and Gensyn use Polkadot’s Substrate framework. Analog, Midnight, and Tanssi use the stack but build outside the ecosystem. The pattern is spreading even if the original implementation hasn’t dominated.

This is the most interesting area for standardizing agentic payments and cross-chain coordination.

ERC Standards Determine Who Participates in the FI Wave

The next wave is financial infrastructure. Smart accounts via ERC-4337. Gas sponsorship through paymasters. Real-world assets on-chain. Intent-based transactions with ERC-7683. Confidential payments.

Projects aligning with Ethereum’s standards will participate in this wave. Projects ignoring them will be swept into obscurity.

The standards aren’t arbitrary. They’re coordination points. If you want institutional adoption, you follow the standards institutions recognize.

Polkadot Has the Architecture but Keeps Missing

Polkadot has the right architectural properties for a secure control plane. Shared security, native interoperability, governance on-chain.

It repeatedly fails to prioritize Ethereum compatibility. The cypherpunk stubbornness on financial infrastructure alignment keeps costing it relevance.

The technical foundation is excellent. The go-to-market has been poor. I’ve written more about this in The Next Blockchain Wave That Polkadot Is Positioned To Miss.

The Opportunity for Forks

There’s a unique opportunity here. Fork Polkadot. Keep the technical architecture. Fix the alignment.

The gap between what Polkadot could be and what it is creates space for builders willing to prioritize compatibility over ideology.

Someone will eventually take the excellent foundation and point it in the right direction.

Pick Based on What You’re Building

There’s no universal best blockchain. There’s only the right choice for what you’re building.

Store of value? Bitcoin or Ethereum. General-purpose dApp? Rollups. High-frequency DeFi? SpeedRacers. Cross-chain coordination? The control plane category is still open.

Match the tool to the job.