A blockchain solves one specific, narrow kind of problem. Reach for one where a well-designed database would do the job, and you've added cost, complexity and a slower product for nothing. Two questions usually tell us which side of that line a project sits on.

Ask what breaks if a trusted party lies or disappears

The core value of a blockchain is removing the need to trust a single party. If your system already has a trusted party, your own company, a payment processor, a regulator, and that's fine for your users, you don't need a blockchain. You need it when the whole point of the product is that no single party should be able to alter the record, which is a much narrower case than most pitches assume.

Ask whether the data actually needs to be public and immutable

Immutability is a feature until it's a liability. If you'll ever need to correct a mistake, comply with a data deletion request, or update business logic quickly, an on-chain record makes that dramatically harder. Provenance tracking, ownership records and verifiable scarcity (tokens, certain NFT use cases) are strong fits. Most transactional business logic isn't.

Where we've seen it genuinely pay off

  • Verifiable ownership or transfer of a scarce digital asset.
  • Cross-organisation systems where no single party should control the source of truth.
  • Token-gated access or loyalty systems where portability across platforms matters.

Where we've talked clients out of it

  • Internal record-keeping that only your own systems ever touch.
  • Anything requiring fast, cheap, high-frequency writes, gas costs and block times punish this.
  • Features that will need frequent business-logic changes after launch.

If it does make sense

Security-first contract design matters more here than almost anywhere else in software, a bug in a deployed smart contract can't just be hotfixed the way a web app can. That means thorough testing, external review before mainnet deployment, and conservative, well-audited token standards rather than custom logic wherever possible.

If you're not sure which side of this your idea falls on, that's exactly the conversation to have before any code gets written, which is what our Blockchain Development team does with every new engagement.