Verifiable proof of
presence.

Issue verifiable proof that certify a person was present at a place, time, and activity. Portable, tamper-evident records that hold up in audits, disputes, and third-party verification.

Used in / with.

NJIT⚛ PrincetonMIT• RutgersHCCCORNL
Presence Receipt
ParticipantMarcus Chen
SessionSafety Briefing
LocationElmwood Construction Site
Date/TimeJan 19, 2026 · 08:15 AM
ATT-7291
Presence Receipt
DATE & TIME
Jan 19, 2026 · 08:15 AM
LOCATION
Elmwood Construction Site
SESSION
Safety Briefing
Receipt ID
ATT-7291-XKCD
Scan to verify

Proof-of-Presence for Compliance-Critical Attendance

A presence receipt is a signed, portable record that shows: Who was present, Where and when, Under what conditions, Issued by whom, and whether it is still valid.

It works like a receipt — but for participation, not money.

Used Attestly to verify and certify activity time including volunteer hours, training, site visits, education, regulated programs and any work.

Tamper-proof digital attendance verification system showing receipt issuance and verification processIssuerVerifier

Attendance records you can defend in an audit

Guide

How Attestly works: A technical overview

From creating your first receipt type to understanding the signatures that make verification possible.

Applications

Who uses presence receipts and why

Volunteer organizations, training providers, construction sites, government agencies—real examples of how verifiable presence proof solves problems.

Perspective

Why attendance apps aren't enough

Event platforms track attendance. We issue proof. Understanding the fundamental difference between internal records and portable, third-party-verifiable receipts.