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Sayfitech
Financial technology

Crypto infrastructure

Custody patterns, node access, indexing and exchange connectivity built to hold up.

Engagement
Phased build with your finance and compliance leads
Typical timeline
12–16 weeks
Starts with
An inventory of every wallet, exchange account and person who can currently sign.
01The situation

Digital assets land in one wallet, get moved by whoever holds the phrase, and reach the accountant as a spreadsheet nobody can verify. That works until a bank, an auditor or a regulator asks a question that needs a real answer.

Why it matters

Digital asset operations that pass a security review.

Capital systems, engineered.

What we build

Concrete artefacts, handed over and documented.

  1. 01

    Custody integration with role-based approval, so no single person can move assets alone

  2. 02

    Exchange and wallet connectivity producing one normalised record of every deposit, trade, transfer and fee

  3. 03

    Address whitelisting and counterparty records structured for travel-rule reporting

  4. 04

    Settlement and internal transfer flows built so a retried instruction cannot pay twice

  5. 05

    Cost-basis accounting that reconciles to your fiat books and holds up under audit

  6. 06

    Alerting on balances, pending transactions and failed transfers, delivered to a channel your team already watches

What changes

01

No individual can move assets without a second approver

02

Digital assets close on the same monthly timetable as the rest of the business

03

Auditor and banking questions are answered from records rather than recollection

How it runs

Weeks 1–4

01Custody and policy

Signers, thresholds, whitelists and the written policy behind them, agreed before a line of integration code.

Weeks 5–12

02Connectivity and settlement

Venue connections, transfer flows and the normalised transaction record everything downstream reads.

Weeks 13–16

03Accounting and close

Cost basis, fiat reconciliation, and one full month-end run alongside your finance team.

06Typical stack

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

  • Fireblocks
  • CCXT
  • Postgres
  • Kafka
  • Grafana

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