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Make a deal with Center for Open Science
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
999
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🧰 Free analysis for Center for Open Science
📊 Post engagement
2
Avg engagement / post
0.2%
Engagement vs followers
Nov 2022
On Mastodon since
🔥 Top post: New on the COS blog: What does it take to build a collaborative · 5 likes + reposts
📊 Activity & format
Posting cadence
3.7 / week
Posts several times a week.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
27×
Follows 37 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
New blog post from the Generalist Repository Ecosystem Initiative (GREI), comprised of 7 generalist repositories including OSF:
📖 Listening, Learning, Evolving: Four Years of GREI Community Engagement
Learn how community feedback has shap…
Building resilient research data infrastructure is a community effort. COS is working with a committee of experts through the Coalition for Resilient Research Data Infrastructure (CRRDI) to develop a strategic plan for strengthening federa…
📌 Introducing the Metascience Bulletin Board—a new community resource from the Metascience Alliance.
Share funding opportunities, job openings, calls for collaborators, events, and more with the broader metascience community beyond your ex…
📅 Save the date! The Tanenbaum Open Science Institute (TOSI) and the Center for Open Science (COS) have partnered to bring the Metascience 2027 conference to Montreal, Canada on June 14–16, 2027.
Metascience 2027 is a global gathering for …
The National Cancer Institute is hosting NCI Data Jamboree: Enhancing Data Sharing and Utility to Advance Cancer Research, November 16–18, 2026, in Rockville, MD.
The event brings together researchers, postdocs, graduate students, and citi…
⚠️ OSF Notice: We're experiencing temporary service interruptions that are affecting some OSF features and functionality. You can monitor the status here: https://status.cos.io/
If you continue to experience an issue once all services are …
COS defines 'lifecycle open science' as research with publicly accessible plans, outputs, and outcomes that are linked and findable. When those elements are connected, the work is easier for others to evaluate, reuse, and build on
Rodrigo …
Jolana Samii’s research focuses on factors that influence health and wellbeing, including how attachment insecurity relates to sleep quality. Her connected research record links a preregistered plan, data, and a preprint, so the work can b…
Open science has grown from a niche movement to an increasingly established part of research. Open infrastructure has matured, and practices like data sharing are more widely adopted. As open science has evolved, so has COS.
On our blog, E…
Join our upcoming webinar! OSF Essentials: How to Use PIDs on the OSF
July 30
Persistent identifiers (PIDs) are like digital fingerprints for researchers, institutions, and research outputs. This webinar will explore how OSF helps create c…
Eye tracking comes with a distinct layer of technical infrastructure that is often underreported and not fully captured in other preregistration templates.
Libby Jenke and Nicolette Sullivan developed the Eye Tracking Preregistration Temp…
Join our upcoming webinar! OSF Essentials: How to Use PIDs on the OSF
July 30
Persistent identifiers (PIDs) are like digital fingerprints for researchers, institutions, and research outputs. This webinar will explore how OSF helps create c…
Eye tracking comes with a distinct layer of technical infrastructure that is often underreported and not fully captured in other preregistration templates.
Libby Jenke and Nicolette Sullivan developed the Eye Tracking Preregistration Temp…
🐘 Community & instance
Home server
fosstodon.org
A open-source software server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 2 views per post.
📤Posts about 3.7× per week.
🛡️ Audience credibility
52/100
Fair
Credibility score
76%
Mixed
Real audience
Medium
Fake-follower risk
High
Data confidence
- Est. 76% real, active audience · Medium fake-follower risk.
- Low engagement (~0.2% of followers engage each post) — a sign of an inflated or inactive audience.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Our mission is to increase openness, integrity, and reproducibility of research. #OpenScience | 📧 Contact COS: contact[at]cos.io | OSF Support: support[at]osf.io
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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