SinyaDoc is the electronic signature platform built for Rwanda and East Africa — identity-verified signers, blockchain-anchored integrity, and a public verification portal anyone can trust.
No credit card required to start.
Service Agreement — HH Links Ltd
Sent to 2 recipients
Three steps. No paper, no back-and-forth, no doubt about authenticity.
Step 1
Upload a PDF or Word document, drop signature and date fields wherever they belong, and send — no printing, scanning, or courier required.
Step 2
Recipients get a secure link — no account required to sign. Draw, type, or upload a signature, right from a phone or laptop.
Draw your signature
Step 3
Once everyone signs, the envelope is sealed and its hash anchored on-chain. Anyone — no login needed — can verify it's authentic, years later.
Document verified
Hash matches the anchored record — unaltered since signing.
Upload PDF, DOC, or DOCX — DOC/DOCX converts automatically so every recipient sees a clean, consistent document.
Capture a signature by hand, type it in a signature font, or upload an image — cropping happens automatically.
Registration is checked against national identity records before an account can send or sign.
Every completed envelope is hashed and anchored on-chain — change one byte and verification fails, publicly.
Anyone can scan a certificate's QR code or upload a document to confirm it's authentic — no account needed.
Organizations, roles, and routing — send to one signer or a whole approval chain, fully audited.
Security
Every signature is meaningful because every layer underneath it is verifiable — from who signed to whether the document changed after.
English and Kinyarwanda out of the box, Rwandan Franc pricing, and identity verification built around National ID — architected to expand across East Africa.