SHA-256 Provably Fair Algorithm
Cert No. 012,847 · 2026.04.19 · Seoul

Auto-collected comments,
provably fair draws

Comment entries from forums, Instagram and YouTube are collected and de-duplicated automatically. Excel lists are masked in the browser before anything reaches the server. Winners are picked from the cleaned list, and every result comes with an integrity certificate anyone can verify. A SHA-256 hash lets anyone check that nothing was altered from collection to selection.

Start Draw (auto-collect · Excel)
Free
Match SlotsView Results
“One certificate link and audit season is done.”
— Event Lead, City Office
“IG giveaway fairness complaints — gone.”
— @beauty_official
BEAUTY.OFC
@beauty_official
FairPicker

Certificate of Fair Drawing

Spring Follower Thank-You Event

2026-03-01 14:22
4,210 entries
Winners · 3
1stKim H.2ndLee J.2ndPark S.

PROVABLY FAIR DRAWING VERIFIED

· Client Seed Event-2026SPRING9F2A

· SHA-256 e3b0c44298fc1c149afb...b7852b855

Provably Fair Drawing Platform

FairPicker

Verified ✓
Single Draw
SHA-256
No. 012847
Actual issued sample
FREE · NO SIGNUP

Quick picks, just as fair.

Same SHA-256 algorithm as our main draw service. Every result is verifiable.

Random Number
Random Number
Pick any number in your range — instantly.
Use it now
Spin Wheel
Spin Wheel
List menus, names, or chores and spin.
Use it now
Ladder
Ladder
Auto-build a ladder from participants & outcomes.
Use it now
FAIRPICKER · TO DATE
0
Draws completed
0
Participants to date
0
Integrity certificates issued
Process

Just 3 steps, 60 seconds.

No setup — one link is all you need.
STEP · 01
🔗
Gather entries
Collect
Comments are gathered from a link, a file or the auto-collector.
Collected ✓
STEP · 02
🛡️
Mask in browser
Verify
Masked in the browser first. The server never receives the originals.
Masked ✓
← PII removed here
STEP · 03
📜
Stamp the cert
Prove
One draw only. Anyone can verify the result with its SHA-256 hash.
Issued ✓
SEALED
§1
NO RE-DRAW
§ Single-draw principle

“Drawing again until you like the result
is not possible.
Each link can be drawn once.”

— FAIRPICKER PRINCIPLE 01
Why FairPicker

Fairness should be checkable by anyone.

🔒
Single Draw
1 Project, 1 Draw
Each event link can be drawn once. Drawing again until you like the winner is structurally impossible.
Locked
🔎
Participant Verify
Search the roster
Participants can search their own handle on the certificate page and confirm they were included.
Public
🔐
Provably Fair & Zero PII
Math-proof + no PII stored
Uses the SHA-256 hash also found in blockchains. Names and contacts are masked with asterisks in the browser before upload, so the originals never reach the server.
Encrypted
Supported Sources

Anywhere, anything.

Paste a link — we collect the rest.
Social Media
Instagramcomments · mentions
YouTubecomments · subs
Auto ✓
Korean Community
MLBPark
FM Korea
Theqoo
Clien
Ppomppu
Ruliweb
Naver Cafe
Daum Cafe
Auto ✓
File / Manual
Excel.xlsx
CSV.csv
Manual entrypaste
Auto ✓
Use Cases

Run by teams like these.

INSTAGRAM
Instagram events
Comment tags · story regrams
Avg. 1,240 entrants
Popular
CORPORATE
Corporate events
Internal draws · prizes · welcome kits
PDF certificate
B2B
GOVERNMENT
Public sector
Citizen participation · public programs
Audit-ready
Audited
COMMUNITY
Community
Cafés · Discord · open chats
Free up to 300
Free
BEAUTY.OFC

FairPicker

Certificate of Fair Drawing

Spring Follower Thank-You Event

Drawing Details

Details

Host

@beauty_official

Draw Date

2026-03-01 14:22

Participants

4,210 entries

Winners / Reserves

3/0

Data Source

Instagram API

Algorithm

SHA-256

Drawing Results

Results

Final Winners (3)

1st
Kim H.
2nd
Lee J.Park S.

Fairness Info.

Verification Data

Conducted fairly via SHA-256; anyone can verify with the values below.

Project ID

Unique project identifier

c3a7f9e2-1b4d-4e6f-9a8c-2d5e7f8a9b0c

Server Seed

Server-generated seed

srv-2026SPRING-c99241ca-50b9-4109-8912-be21c6875c7b

Client Seed

Seed from the host

Event-2026SPRING9F2A

SHA-256 Final Hash

Hash used to verify

e3b0c44298fc1c149afb...b7852b855

VERIFY FAIRNESSVerify the result

Issuing Authority

Issuer

Provably Fair Drawing Platform

FairPicker

Confirms the integrity of the drawing via SHA-256.

Sample Certificate

Preview the certificate first.

The same layout as a real certificate. Draw details, participant count, masked winners and the SHA-256 hash sit in the same places.

Numbers on this page are examplesuntil you issue one yourself.
01 · What's inside

Draw metadata, participant count, masked winners, and the SHA-256 hash of the entire result. One changed byte breaks the hash — tampering shows immediately.

02 · Who can verify

Anyone can. With the certificate link, the /verify page recomputes the hash so you can check it yourself. No login needed.

03 · About PII

Masked in the browser and hashed before upload. Raw data is never stored on our servers.

FAQ

Frequently
asked.

More questions? [email protected]
Q&A · No. 012
FREQUENTLY · ASKEDEN
Q1Is re-drawing really impossible?
Yes. Each draw link fires once. The result is hashed immediately and sealed into a certificate.
Q2Can a participant verify they were included?
Yes. The participant search on the certificate page lets them look up their name or handle.
Q3How is PII handled?
Masked in-browser (‘Kim Gil-dong’ → ‘Kim G.’) before upload. The server stores only hashed values.
Q4How does payment work?
A one-time fee based on the data collection, processing and retention volume. KakaoPay, Toss, credit cards. No monthly subscription.
Q5Can I get a PDF certificate?
Paid processing includes the PDF certificate (suitable for official submissions). The web certificate link is available on every draw.
#FAQ-2026-04LAST UPDATED · 04.19
Pricing

Simple like a receipt.

Paid · Free
FREE
$0 · up to 300
Collection & processing free up to 300...✓
Free web certificate...✓
SHA-256 provably fair...✓
Participant search...✓
Masked winner list...✓
Start with just email...✓
#FP-0000-INTLThank you
Popular
COLLECT · PROCESS · RETAIN
$1.99 · from
301–2,000 processed...$1.99
2,001–10,000 processed...$6.99
10,001+ processed...$13.99 cap
Full participant data...download
PDF certificate...✓
Private results...✓
Host logo...✓
Timeline report...✓
#FP-0298-INTLThank you

International payment (USD) coming soon — Korean accounts can pay now via Toss.

Start now, fairly.

No login · collection & processing free up to 300 · instant results.

ISSUED · 2026.04.19 · SEOUL · No. 012,848