Docuproof

Docuproof offers a platform that timestamps and verifies digital files on blockchain to prove document existence and integrity. The job it does: designing and building iOS and Android apps.

The natural audience is businesses launching or rebuilding an app. Alongside the main category they mention Blockchain.

Docuproof is based in Cheyenne, Wyoming. You can read more at docuproof.io.

Before you commit, look at portfolio quality, app store experience, and maintenance terms. Get the renewal terms in writing before the first invoice.

Every review on Revaw shows how it was verified, so if you know Docuproof well, your review carries weight here.