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Sayfitech
Blockchain & Web3

Web3 integrations

On-chain functionality added to existing products without breaking the experience.

Engagement
Fixed-scope build inside an existing product
Typical timeline
6 weeks
Starts with
The deployed contract addresses and the two user journeys that touch them.
01The situation

Your product needs one on-chain element, a proof of ownership, a payment, a token gate, and everything else about it is a normal application. The awkward part is the middle: a user clicks, the network takes twelve seconds to agree, and your interface has to be honest about that without looking broken.

Why it matters

Blockchain features your non-crypto users can still use.

On-chain products, audited by default.

What we build

Concrete artefacts, handed over and documented.

01

An indexer that reads chain state into your own database, so pages load from Postgres rather than waiting on a public node

02

Reorganisation handling, so blocks that get reversed are unwound in your data instead of leaving a record that never really happened

03

Pending, confirmed and failed treated as three real states in the interface, described in words a non-crypto customer understands

04

A server-side view of the truth, so support can answer whether a transaction went through without asking the customer for a hash

05

Failover across node providers, because one provider’s outage otherwise looks exactly like your product being down

What changes

01

On-chain features feel like the rest of the product rather than a bolted-on section

02

Support resolves transaction questions without escalating to engineering

03

Page load stops depending on the mood of a public node

How it runs

Week 1

01Contract surface and states

Which calls the product makes, what each one can return, and what the customer should see at every stage of waiting.

Weeks 2–4

02Indexer and interface

Chain data mirrored into your database, and the front end built against your own records rather than live calls.

Weeks 5–6

03Failure paths

Reversals, reverts, dropped transactions and provider outages, each given a defined behaviour and tested deliberately.

06Typical stack

Chosen per project. Named here so you can see the shape of it.

  • viem
  • wagmi
  • The Graph
  • Alchemy
  • Postgres

Questions we get asked

Next step

Tell us the outcome, not the tooling.

Send us the situation you are in. We will tell you which discipline it belongs to, what we would do first and what it costs, including when the answer is to wait.

Start a projectOr email us directlyinfo@sayfi.ai